Tektronix Cerify CYSW User manual

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Cerify CYSW

ZZZ

Automated Video Content Veriﬁcation System

User Manual

*P077035205*

077-0352-05

Cerify CYSW Automated Video Content Veriﬁcation System

ZZZ

User Manual

www.tektronix.com

077-0352-05

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Cerify is trademark of Tektronix, Inc.

Online Help part number 076-0198-05

This document supports software version 7.2 and above.

Contacting Tektronix

Tektronix, Inc. 14150 SW P. O . B o x 5 0 0 Beaverton, OR 97077 USA

For product information, sales, service, and technical support:

In Nor Worldwide, visit www.tektronix.com to ﬁnd contacts in your area.

Karl Braun Drive

th America, call 1-800-833-9200.

Warranty

Tektronix warrants that the media on which this software product is furnished and the encoding of the programs on the media will be free from defects in materials and workmanship for a period of three (3) months from the date of shipment. If any such medium or encoding proves defective during the warranty period, Tektronix will provide a rep product is furnished, this software product is provided “as is” without warranty of any kind, either express or implied. Tektronix does not warrant that the functions contained in this software product will meet Customer's requirements or that the operation of the programs will be uninterrupted or error-free.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period. If Tektronix is unable to provide a replacement that is free from defects in materials and workmanship within a reasonable time thereafter, Customer may terminate the license for this software product and return this software product and any associated materials for credit or re fund.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED TEKTRONIX' RESPONSIBILITY TO REPLACE DEFECTIVE MEDIA OR REFUND CUSTOMER'S PAYMENT IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH

lacement in exchange for the defective medium. Except as to the media on which this software

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

DAMAGES.

Table of Contents

Acknowledgements

Acknowledgements................................................................................................. 1

Preface

Preface ............................................................................................................... 3

Contents

Related Documentation ....................................................................................... 3

Getting Started

Product Description ............................. ................................ ................................ ... 5

System Components.................................. ................................ ......................... 5

System Installation ................................................................................................. 9

Prerequisites ....................... .................................. ................................ ........... 9

Software Installation.......................................................................................... 12

Software Uninstallation ...................................................................................... 18

Software Reinstallation ...................................................................................... 18

Software Upgrade......................... .................................. ................................ .. 19

Network Settings.................. ................................ .................................. .......... 20

Accessing the Application........................................................................................ 21

Starting the Application...................................................................................... 21

Cerify Windows Service ..................................................................................... 22

Starting a Cluster.............................................................................................. 22

Accessing the Web User Interface .... ................................ .................................. .... 23

Logging in to the Application ......................... ................................ ...................... 23

Logging Out ................................. ................................ ................................ .. 23

of this Manual........................ ................................ ............................... 3

Table of Contents

Operating Basics

Concepts .................. .................................. ................................ ........................ 25

Users ......... .................................. ................................ ................................ 25

MediaLocations............................................................................................... 26

MediaSets...................................................................................................... 26

Templates...................................................................................................... 26

Proﬁles ................................. ................................ ................................ ........ 27

Jobs............................................................................................................. 27

Alerts ........................................................................................................... 27

Reports......................................................................................................... 28

Archiving ...................................................................................................... 28

Clustering.................... .................................. ................................ ................ 28

Cerify Automated Video Content Veriﬁcation System User Manual i

Table of Contents

Functional Overview .............................................................................................. 28

System Tray Icon ............................................................................................. 28

Web User Interface ........................................................................................... 29

Error Handling ................................................................................................ 35

Tutorials ............................................................................................................ 36

Work Flow..................................................................................................... 37

Before You Begin ............................................................................................. 38

Creating a MediaLocation ....... ................................ ................................ ............ 40

Creating a MediaSet.................. ................................ ................................ ........ 41

Creating a Template ............................ ................................ .............................. 44

Creating a Proﬁle ............................................................................................. 46

Creating a Job. ................................ ................................ ................................ 47

Inspecting Job Results................................ .................................. ...................... 47

Generating a Report .. .................................. ................................ ...................... 48

Archiving ...................................................................................................... 48

Exporting Templates............................ ................................ .............................. 49

Importing Templates............................ ................................ .............................. 49

Reference

Introduction ........................................................................................................ 51

Jobs................ .................................. ................................ ................................ 51

Jobs Monitor .................................................................................................. 51

New Job................ ................................ ................................ ........................ 52

Modifying Jobs................................ ................................ ................................ 53

Job Details..................................................................................................... 54

Processing Result ............................................................................................. 55

Alert Levels ................... ................................ ................................ ................ 56

Alert Details................................................................................................... 57

Start and End Positions of Quality Alerts .... .... . .... . .... ..... .... . .... . .... . .... .... . .... . .... . .... ..... 58

Frame View.................................................................................................... 59

Proﬁles.............................................................................................................. 60

Proﬁle Details ................................................................................................. 61

Edit Proﬁle..................................................................................................... 61

New Proﬁle............ .................................. ................................ ...................... 62

Templates ....................... ................................ .................................. .................. 63

Template Details ............................ ................................ ................................ .. 66

Edit Template.............. ................................ ................................ .................... 67

New Template ................... ................................ .................................. ............ 68

Exporting Templates............................ ................................ .............................. 69

Importing Templates............................ ................................ .............................. 70

Container Templates............................................................................................... 71

Checks Common to All Container Layers ......................... ................................ ........ 72

ii Cerify Automated Video Content Veriﬁcation System User Manual

Table of Contents

Container Checks Speciﬁc to MPEG-2 Transport Stream Standard .................................... 73

Container Checks Speciﬁc to MPEG-2 Program Stream Standard...................................... 73

Container Checks Speciﬁc to SMPTE 377M / MXF Standard .. .................................. ...... 74

Video Templates ................................................................................................... 74

Common Video Conﬁguration Checks ..................... .................................. .............. 74

Video Quality. . .... . .... . .... ..... ..... ... . . .... . .... . .... . .... . .... . .... . .... . .... ..... ..... .... . .... . .... . ... 78

Video Checks Speciﬁc to MPEG-4 Standard.... ................................ .......................... 80

Video Checks Speciﬁc to MPEG-2 Standard.... ................................ .......................... 81

Video Checks Speciﬁc to VC-1 Standard .................................................................. 83

Video Checks Speciﬁc to H.264/AVC Standard........................................... ................ 83

Video Checks Speciﬁc to the DV50/100/DVCPro Standard................................. ............ 84

Video Checks Speciﬁc to the ProRes Standard .............................. .............................. 85

Video Checks Speciﬁc to Generic QuickTime Video..................................................... 85

Video Checks Speciﬁc to JPEG 2000 ...................... ................................ ................ 86

Audio Templates................................................................................................... 86

Common Audio Conﬁguration Checks................. ................................ .................... 87

Audio Quality Checks .... . .... . .... ... . . .... . .... . .... . .... ..... ... . . .... . .... . .... ..... ... . . .... . .... . .... .. 88

Audio Checks Speciﬁc to MPEG1 and MPEG-2 Audio Standards ..................................... 90

Audio Checks Speciﬁc to Dolby-E Audio Standard .............. .................................. ...... 91

Audio Checks Speciﬁc to AC-3 Audio Standard.................. .................................. ...... 91

Audio Checks Speciﬁc to AAC Audio Standard .......................................................... 92

Audio Checks Speciﬁc to PCM Audio Standard .......................................................... 92

Audio Checks SpeciﬁctoDVAudioS

Action Templates .............................. ................................ .................................. .. 93

MediaSets .......................................................................................................... 97

New MediaSet............................... .................................. ................................ 97

Edit MediaSet ................................................................................................. 98

Conﬁgure DropBox........................................................................................... 99

DropBox Filters ... ..... ..... ..... ..... .... . ..... .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... ..... . 102

Reports.... .................................. ................................ ................................ ...... 103

Options.......................... ................................ ................................ .................. 103

Change Password ........................................................................................... 103

Records per Page.................... ................................ .................................. ...... 104

Jobs View ................................ .................................. ................................ .. 104

Admin..................................... .................................. ................................ ...... 104

User Management ................ ................................ .................................. ........ 105

Modify User ................................................................................................. 105

New User .................................................................................................... 105

MediaLocation Management.............................................................................. 106

Mail Settings . . .... ..... ..... .... . .... . .... . .... . .... ..... ..... .... . .... . .... . .... . .... . .... . .... ..... ..... .. 110

Processing Settings ... . ..... .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... . 110

Database Backup.......................... ................................ ................................ .. 111

tandard ............ .................................. .............. 93

Cerify Automated Video Content Veriﬁcation System User Manual iii

Table of Contents

Schedule Job Deletion...................................................................................... 112

Report File Settings. ... . . .... . .... . .... . .... . .... . .... ..... ..... .... . .... . .... . .... . .... ..... ..... ... . . .... . 112

Stream Information........... ................................ ................................ .............. 113

VLC playback ............................................................................................... 113

Application Log............................................................................................. 115

Media Test Units Page ..................................................................................... 115

Help ............................................................................................................... 116

Accessing the Online Help................................... .................................. ............ 116

Using the Online Help.............. ................................ .................................. ...... 117

Appendices

Appendix A: Alerts........................................ ................................ ...................... 119

List of Alerts .................................. .................................. ............................ 119

Appendix B: Supported Compression Standards ............................................................ 176

Supported Video Compression Standards................................................................ 176

Supported Audio Compression Standards . .................................. ............................ 180

File Types and Container Formats ...................... ................................ .................. 182

Supported Wrapper and Codec Combinations........................................................... 183

Standards References....................................... ................................ ................ 184

Appendix C: Software Maintenance........... ................................ ................................ 186

Conﬁguring the Cerify Application..................... ................................ .................. 186

Reinitializing the Cerify Application ... ... . . .... . .... .... . .... . .... .... . .... ... . . .... ..... .... . .... .... . . 187

Database Backup/Restore Utility . . .... . .... . .... . .... ..... ... . . .... . .... . .... . .... . .... ... . . .... . .... . ... 187

Loading Example Jobs ..................................................................................... 189

Capturing Cerify Status Information Using the Support Monitor Script . ............................ 190

Upgrading Dongle Options ...... .................................. ................................ ........ 192

Using NFS Client on Windows ..................... ................................ ...................... 194

Appendix D: CeriTalk........................................................................................... 196

CeriTalk XML Reports..................................................................................... 196

CeriTalk SOAP API ........................................................................................ 199

Appendix E: Conﬁguring Your Cerify Installation .......................................................... 204

Number of Channels........................................ ................................ ................ 204

Modes of Operation ........................................................................................ 205

Conﬁguring Your Cerify Installation for Best Performance ........................................... 208

Commercial off-the-Shelf Recommendations ........................................................... 212

Glossary

Glossary Terms .................................................................................................. 213

Index

iv Cerify Automated Video Content Veriﬁcation System User Manual

Acknowledgements Acknowledgements

Acknowledgements

Apache. This product uses software developed by the Apache Software Foundation, www.apache.org. This includes the following software: Andariel, Ant, Apache Commons, Axis, Castor, Log4j, Struts, Spring and Xe

Apple. This product uses parts of the Darwin Streaming Server s ource code covered by the Apple Public Source Lice software license notices and source code provided with Cerify.

rces.

nse. For copies of this license and modiﬁcations made to the source code please refer to the

Apple and Q

Expat. T

FFmpeg. This product uses software developed by the FFmpeg project, ffmpeg.mplayerhq.hu.

Speciﬁ

HTMLUNIT. This product includes software developed by Gargoyle Software Inc.

/www.GargoyleSoftware.com/

http:/

Java This product uses Java™ technology. The TM and technology are explicitly required by Sun

://www.sun.com/policies/trademarks

(http

JBoss. Modiﬁcations have been made to the source code of the JBoss application server. This source

is available on request.

code

JCIFS. This product uses the Java CIFS Client Library, jcifs.samba.org.

JDIC This product uses the JDIC Java integration components. jdic.dev.java.net

JPEG. This product uses free JPEG software from the Independent JPEG Group.

JUnit. This product uses the JUnit regression testing framework, www.junit.org.

uickTime are trademarks of Apple Inc., registered in the United States and other countries.

his product uses the Expat XML Parser, expat.sourceforge.net.

cally, support for DV is provided by some components of the libavcodec and libavutil libraries.

MXF. This product uses MXF software developed by and used under license from OPENCUBE Technologies SAS, www.mxftk.com

MySQL. This product is powered by the MySQL database. MySQL is written and distributed under the GNU General Public License which means the source code is freely distributed and available to the general public.

Neko. This product includes software developed by Andy Clark.

Rhino. This product uses the Rhino implementation of JavaScript, http://www.mozilla.org/rhino/

Saxon. This product uses Saxon XSLT processor, saxon.sourceforge.net.

Windows Media. This product is protected by certain intellectual property rights of Microsoft. Use or

distribution of such technology outside of this product is prohibited without a license from Microsoft.

Cerify Automated Video Content Veriﬁcation System User Manual 1

Acknowledgements Acknowledgements

WinDump. This product uses the WinDUMP network diagnostic utilities www.winpcap.org/windump

WinPcap. This product uses the WinPcap packet capture libraries www.winpcap.org

7-Zip. This product uses the 7-ZIP ﬁle archiver. www.7-zip.org

2 Cerify Automated Video Content Veriﬁcation System User Manual

Preface Preface

Preface

Cerify is an automated system for testing compressed digital media before transmission or use. Through a Web-based interface, users can create Jobs, which will perform a sequence of checks on a set of media ﬁles, and vie

Contents of this Manual

This manual describes the system in detail, provides procedures for using the system, and includes full reference documentation.

Getting Started describes the system capabilities, conﬁguration, and ﬁrst time operation.

w the results.

Operatin

Reference provides detailed information about each page (or window, or menu item) in the user

interfa

Appendix A: Alerts lists and deﬁnes all the stream compliance and integrity checks that can be

carrie

Appendix B: Supported Compression Standards describes compression standards and ﬁle formats

that th

Appendix C: Software Maintenance details the procedure to reinitialize the Cerify application and to

upgra

Appendix D: CeriTalk provides information about an XML-based API that lets you interact with Cerify

from

broadcast automation, and workﬂow systems.

App

conﬁguring your installation for best performance and commercial off-the-shelf platform

recommendations.

gBasicsprovides a functional overview, basic concepts, and tutorials for using the system.

ce.

d out.

e system recognizes.

de the license dongle options.

within other applications, making it possible to integrate Cerify with other content management,

endix E: Conﬁguring Your Cerify Installation provides information on modes of operation,

Related Documentation

The following related documents support the product:

Cerify Online Help (Tektronix part number, 076-0198-xx)

Cerify Release Notes

Cerify Third Party Software License Notice Document (Tektronix part number, 001-1513-xx)

Cerify Quick Start User Manual (Tektronix part number, 071-2680-xx)

Read This First (Tektronix part number, 061-4355-xx)

Cerify Automated Video Content Veriﬁcation System User Manual 3

Preface Preface

4 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started Product Description

Product Description

This is a media testing product which runs either on a single computer or on a cluster of two or more dedicated computers connected on a network running Microsoft Windows. This automated video content veriﬁcation parameters. It provides both broadcast and production operations with a fast, cost effective QC solution.

Cerify can be integrated with your existing infrastructure using the CeriTalk API to interface with asset management systems and provide a completely automated workﬂow. A Web based user interface allows test results to be viewed from any network connected workstation.

System Components

Cerify accesses digital media from local storage, such as a local hard drive or DVD, as well as network storage, such as a Windows ﬁle s erver or FTP server.

A Cerify system can be set up in two basic ways:

The ﬁrst consists of a single self-contained unit which runs all the management and testing processes

of the system.

system can be used to check for correct digital encoding and against baseband quality

The second consists of a networked cluster of three or more units, which enables simultaneous

processing of a greater number of ﬁles. The networked cluster contains a single Supervisor and one

or more Media Test Units.

License Dongle

he license dongle must be plugged into the USB port on your computer to run the application. In a

T clustered system, Media Test Units acquire their licenses from the Supervisor.

License dongle

It is possible to navigate the user interface and see previous results when no dongle is installed, but it is not possible to carry out new checks of digital media ﬁl

The types of codecs and ﬁle formats that can be checked.

The number of channels that can be used.

es. The license dongle controls:

For demo dongles, when the license will expire.

Server conﬁguration (there can only be one Supervisor unit in a cluster)

Cerify Automated Video Content Veriﬁcation System User Manual 5

Getting Started Product Description

Networking

In a clustered conﬁguration, network interface on all of the units, including the Supervisor and Media Test Units, should be connected to the local area network. This connection is used to access media ﬁles, to service Web clients, and to carry cluster control trafﬁc.

Clustering topology

are Components

Softw

Software components include:

A Web-based user interface, which allows users to create and control Jobs, and to view or report the results of these Jobs. This interface is accessed over the network by using a Web browser. All

need to know is the IP address of your unit.

you

Media test service, which performs media ﬁle veriﬁcationaccordingtotheruleschosenbytheuser.

A database, which provides robust storage of the system entities, including users, Jobs, and Job results.

An XML-based control and reporting API known as CeriTalk. CeriTalk allows interaction with Cerify from within other applications, making it possible to integrate Cerify with other content management, broadcast automation, and workﬂow systems.

A Web application server that provides access to the Web interface and runs the core services for the application.

6 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started Product Description

A license server, which controls the types of ﬁles that can be veriﬁed.

The system tray icon and menu, which provides access to the Cerify Web-based user interface and

allows the application to be started and stopped.

Cerify as a Standalone System

A standalone system is a single machine that combines the functions of a Supervisor unit and a Media Test Unit. The process that carries out the media ﬁle testing is known as the Media Test Client (MTC).

Cerify Cluster

The Supervisor unit controls the cluster system. It hosts the database and the Web server, allowing multiple users to set up and view Jobs. It is responsible for locating the media ﬁles from the network, but delegates a ctual transfer and processing of these ﬁles to one or more Media Test Units. The Supervisor unit organizes and stores the resulting outputs.

Each Media Test Unit is responsible for processing the digital media ﬁles in a networked cluster. It applies the user-speciﬁed tests, and reports back the results. The Supervisor can also be conﬁgured to process the ﬁles.

Local area networking

Clustering Requirements.

Two or more PCs with 64-bit Windows Server 2008 SE OS installed.

Administrator privileges on all the machines on which the Cerify software will be installed.

Meet the minimum Hardware speciﬁcations.

Cerify Automated Video Content Veriﬁcation System User Manual 7

Getting Started Product Description

All the clustering PCs should be in the same network with correctly conﬁgured Static IP addresses.

All of the PCs in the cluster should be able to route to each other. The Supervisor unit is given a network name that is recognized and resolved by all the Media Test Units.

You should know the fully qualiﬁed name of the Supervisor unit and provide this when Media Test Units installer asks for the name of the Supervisor unit.

All the Media Test Units should reside on the same network as the Supervisor unit.

If the Supervisor or Media Test Units have more than one network interfaces, it is better to bridge all the network interfaces together. For instructions on conﬁguring the network bridge, refer to

Conﬁguring a Network Bridge

Synchronization between all the units in cluster must be maintained. For example, use an NTP server to synchronize the units in a cluster.

(see page 16).

Cluster

Clusters may not work in the following scenarios:

ing Scenarios Which may not Work

If the Supervisor and the Media Test Unit are in different subnets wherein the switch blocks the multicast or UDP trafﬁc.

If any of Supervisor or Media Test Unit systems has Windows ﬁrewall running.

If a Media Test Unit cannot resolve Supervisor host name.

If the Supervisor does not have a host name or if the Supervisor has a host name with Japanese or Chinese characters.

If a network has another system with the same host name as the Supervisor system.

If the host name of the Supervisor changes after cluster installation.

the http port on the Supervisor is conﬁgured to a different port number after cluster installation (In

If this case, Media Test Unit cerify.properties, the property cerify.supervisor.httpport must be changed to the new port number).

If either the Supervisor or the Media Test Unit has multiple network interfaces and the IP addresses change after the installation. In this case, the property cerify.jboss.bindaddress must to be changed to the current IP address.

If the Supervisor has multiple network interfaces connected to the same network and if DNS/WINS are not conﬁgured properly, troubleshoot this problem by doing either of the following:

By adding an entry containing the Supervisor host name and the IP address used by Cerify on Supervisor in "hosts" ﬁle, which can be found in the Media Test Units.

By bridging all the network interfaces together.

Clusters might not work correctly if there is momentary network outage in which case the clusters have to be restarted.

8 Cerify Automated Video Content Veriﬁcation System User Manual

C:\WINDOWS\system32\drivers\etc in all

Getting Started System Installation

System Installation

This section provides details of hardware, software and user prerequisites for the system and instructions on performing the software installation.

Prerequisites

Hardware Prerequisites

Cerify is designed to be run on a variety of PC hardware. Consequently, the choice of hardware is determined by performance and throughput requirements for your installation.

This section recommends hardware conﬁguration for some situations in which Cerify is typically used.

Single Channel Installation. A single channel installation of Cerify is one that is licensed to test a single

media ﬁle at a time. Such installations are normally performed on a PC or a laptop computer and are

e for situations where a low throughput is sufﬁcient and performance is not critical.

suitabl

It is recommended that you use a computer that meets the following minimum requirements for such

lations:

instal

Processor speed: 2 GHz

Cerify is a CPU-intensive application. For b etter results, choose a dual core system with a clock speed

of 3 GHz and as much on-chip memory cache as possible.

Memory: 2 GB RAM

It is recommended to use a minimum of 1 GB to a maximum of 3 GB per channel and an

additional 1 GB for the operating system and the application. For best performance on a single channel

install, this would be:

1channelx3GB+1GB=4GB

Hard disk drive: 50 GB of free space

The amount of hard disk storage necessary depends on the average size of the ﬁles that you will be

testing and the mode of operation of Cerify that applies to the ﬁle formats that you are testing.

Refer to Modes of Operation

they impact disk space requirements.

A network interface

A DVD drive (used for installing the software)

(see page 205) for details on the different modes of operation and how

A USB port for connecting the license dongle

A license dongle (provided with the product)

Cerify Automated Video Content Veriﬁcation System User Manual 9

Getting Started System Installation

Multi-channel Enterprise Installation. A typical multi-channel installation of Cerify tests 4-8 media ﬁles at a

time on a single unit. Due to the high throughput and performance requirements that are expected from such installation

In addition to the throughput required, the hardware requirements for such installations also depend heavily on th

Cerify can operate in two modes:

Streaming mode

In this mode, media ﬁles are read directly from the media server hosting the ﬁle and are not copied to the local hard disk of the Cerify system. This is the default mode of operation and is also the preferred one.

Copying mode

Media ﬁles are copied to the local hard disk of the Cerify system before processing can begin. By default, Cerify will not copy ﬁles to the local hard disk, but it is possible to force Cerify to operate in this mode.

The mode of operation that applies to your Cerify installation depends on the ﬁle formats you would like to test and other work ﬂow and connectivity related constraints that might apply to your situation. See the

Modes

s, it is recommended that server class hardware and operating systems be used in such cases.

e mode of operation that will be used.

of Operation

(see page 205) for a detailed discussion on the factors that inﬂuence this.

The functional differences between these two modes of operation impact primarily on the disk space

ability and disk conﬁguration requirements. Speciﬁcally, the copying mode requires a greater amount

avail of disk space and high levels of concurrent read/write performance from the hard drives in order for best overall performance while the streaming mode can derive comparable overall performance with a lesser amount of disk space and lower read/write efﬁciency. Consequently, when possible, the streaming mode should be used in preference to copying mode.

For multi-channel installations, the general guidelines that should be followed when selecting hardware (the values given are the minimum recommended for a 4-channel installation) are:

Processor: 3 GHz

Ensure you have twice as many cores as the number of channels. For a 4-channel installation, this means that you should have eight cores available. It is also recommended that for best performance, you choose as much on-chip memory cache as possible.

NOTE. The ProRes decoder is capable of using as many processors as available to improve processing performance. If you are processing ProRes media ﬁ les, having more processor cores than the recommended two per channel might improve performance.

Memory: 6 GB RAM

Recommend a minimum of 1 GB to a maximum of 3 GB per channel and an additional 1 GB to 4 GB for the operating system and the Cerify database. For the best performance with 4 channels, this would be:

4-channelsx3GB+4GB=16GB

10 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started System Installation

Hard disk drive: 100 GB x 3

For an enterprise installation, Tektronix recommends using a RAID on which to place the MS

Windows and Cerify installation (including database) to achieve fault tolerance in case of disk failure.

This logical drive should be at least 100 GB in size. For systems that are expected to support high

levels of thr

The amount of additional storage you need depends on the mode of operation that applies to your

installati

will be running.

oughput, it is recommended that you have 500 GB of space on this logical drive.

on, the average size of the ﬁles you will be processing and the number of channels you

Streaming

Due to the minimal hard disk utilization when operating in the streaming mode, it is sufﬁcient to provide a

Copying mode

The minimum hard disk space provided must be greater than the average ﬁle size being processed multiplied by the number of channels. It is recommended that the temporary storage be RAID-ed for bet

For help choosing the optimal number of hard disks for your installation and the best RAID levels to

ee Conﬁguring Your Cerify Installation for Best Performance

use, s

Network interface: 1 Gbit/s

You might use multiple network interfaces to improve available network bandwidth.

Integrated RAID controller

A DVD drive (used for installing the software)

A USB port, for connecting the license dongle

icense dongle (provided with the product)

Redundant power supply

mode

single dedicated hard disk of 100 GB in size as temporary storage for Cerify.

ter performance.

(see page 208).

For more detailed speciﬁcation of a validated enterprise PC platform, see Commercial off-the-Shelf

Recommendations (see page 212).

Cerify Automated Video Content Veriﬁcation System User Manual 11

Getting Started System Installation

Supported Platforms

Windows XP - 32 bit and 64 bit

Windows Vista - 32 bit and 64 bit

Windows7-32bitand64bit

Windows Ser

Windows Server 2008 64-bit

NOTE. Appl Microsoft Windows XP 64 bit and Windows Server 2003 because the QuickTime Player is not supported on these platforms.

ver 2003 64-bit

e ProRes, Generic QuickTime and JPEG 2000 Video decoding functions are not available on

Software Prerequisites

The computer on which the application is installed will need the following:

To run one of the Supported Platforms.

To access the system through its Web user interface from another computer on the network, the client computer must have a Web browser installed.

NOTE. To access the application, the preferred Web browser is Microsoft Internet Explorer

7.0 and above). The application has also been tested with Mozilla Firefox. There may be minor visual differences in the appearance of the user interface in different Web browsers.

(version

Software Installation

Before installing the Cerify application, your PC must be correctly connected to your local network. This allows:

The Cerify application to test the ﬁles that are available on other machines on the network.

Other machines to interact with Cerify automatically (for example, using CeriTalk automation clients, or copying of report ﬁles to network locations).

Multiple users to connect to the Cerify Web user interface from remote computers.

For the last two cases, you need to know the IP address or the network name of the machine that Cerify is installed on. Network settings on the PC are conﬁgured in the usual manner using Windows. If your machine is not properly conﬁgured or you do not know the name or IP address information, contact your system administrator.

12 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started System Installation

Installing Cerify

The installation of the Cerify takes several minutes; typically between 5 and 15 minutes depending on the speed of your PC. To install Cerify, perform the following steps:

1. Run the Cerify Installer.

2. Insert the Cerify dongle.

3. Optional: Install Apple QuickTime Player.

Before inst

1. Cerify relies on third-party software applications that are packaged and installed with it: JBoss and

MySQL. If t

to install the Cerify.

2. The Cerif

along with it. It is recommended that other applications that rely on HASP licenses not be used with

Cerify on the same machine.

3. Cerify uses a number of network services that are local to the host PC. These services can sometimes

be blocked by personal ﬁrewall software, in which case an error mes sage will be displayed when C erify

starts. For example, on Cerify start up, a check is made to verify that communication with HASP can

be established. If the Cerify application is unable to communicate with HASP, an error message,

Unable to connect to HASP License Manager (port 1947). Please check if the HASP License

Manag

In such situations, conﬁgure the ﬁrewall to allow the service on the appropriate port, or alternatively

disa

4. It is recommended that the Cerify application should be installed on a machine where it can be

use

will considerably degrade the performance of other running applications. Similarly, running other

applications or services simultaneously w ill degrade the performance of Cerify and increase the time

taken to process a media ﬁ le.

alling the Cerify , you should be aware of the following issues:

hese applications are already used on the PC, you should remove them before attempting

y license server relies on Aladdin HASP SRM drivers, which are installed and conﬁgured

er service is running and is not blocked by a ﬁrewall is displayed and Cerify is stopped.

ble the ﬁrewall entirely.

d as the sole running application. Cerify makes intensive use of both CPU and memory and

Cerify Automated Video Content Veriﬁcation System User Manual 13

Getting Started System Installation

Running the Cerify Installer.

Ensure that you are logged in as a user with administrator privileges.

NOTE. If you try to install the Cerify application without administrator privileges, the following message appears: “The Cerify application can be installed or uninstalled only by a system administrator. Please loginasadmi

Insert the Cerify DVD provided by Tektronix. The Cerify Application Browser opens. Click the Install Cerify lin

NOTE. If you try to install the Cerify application on an unsupported platform (refer to Supported Platforms Windows operating system. Cerify will probably operate correctly but has not been validated on this OS. Do you wish to continue installation?”

If the browser does not open, or if the Install Cerify link does not work, navigate to the Exec folder on the DVD and double-click CerifySetup<version>.exe. Follow the on-screen instructions to perform the installation.

nistrator and try again”.

k to launch the Cerify installer. Follow the on-screen instructions to perform the installation.

(see page 12)), then the following message appears: “This is not a supported

A number of third party software applications are installed during the installation process. Most of these are not visible, but you will be notiﬁed as the WinPcap and HASP drivers are installed.

. WinPcap is not used in the normal operation of the Cerify application. It is used when you collect

NOTE

support diagnostics to troubleshoot networking issues with Cerify. For more information on support diagnostics, refer to Capturing Cerify Status Information Using the Support Monitor Script

(see page 190).

Installation Options

Cerify can be installed in the following ways:

Standalone

Supervisor: The Supervisor unit controls the cluster system. It hosts the database and the Web server, allowing multiple users to set up and view Jobs.

Media Test Unit: Each Media Test Unit is responsible for processing the digital media ﬁles in a networked cluster.

NOTE. During the installation of Cerify, if there are multiple network interfaces in the system, the installer provides the list of IP addresses and asks the user to select an IP address to be used by Cerify.

14 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started System Installation

Installing Cerify as a Supervisor. Follow the steps described in Run Cerify Installer (see page 14) and

Installing Cerify

with the list o installation options dialog box. Sometime during the installation, a dialog box appears where you must:

(see page 13) to install Cerify as a Supervisor. During the installation, a dialog box appears

f installation options. To continue with the Supervisor installation, select Supervisor in the

Enable or dis

Enter the number of channels if you have selected the ﬁle processing option on the Supervisor.

Choose the IP address to be used by C erify.

At the end of the installation, the installer prompts you with an option to load the demo content. If you choose this option, Cerify will be loaded with a demo database, which will contain some sample jobs with results.

Installing Cerify as a Media Test Unit. Follow the steps described in Run Cerify Installer

Installing Cerify

box appears with the list of installation options. To continue with an Media Test Unit installation, select Media Test Unit in the installation options dialog box. Sometime during the installation, a dialog box appears where you must:

Enter the host name of the Supervisor.

Choose the IP address to be used by C erify.

Enter the number of channels.

Conﬁguring a Cluster. To co nﬁgure a cluster, you must:

Install Cerify as a Supervisor on the system which must be conﬁgured as supervisor of the cluster.

able ﬁle-processing option on the Supervisor.

(see page 14) and

(see page 13) to install Cerify as a Media Test Unit. During the installation, a dialog

Install Cerify as a Media Test Unit on one or more systems.

When installing Cerify as a Media Test Unit, the installer prompts you to enter the supervisor host name. The i nstaller checks whether the Media Test Unit can reach the Supervisor system using the host name entered. If the Supervisor system cannot be reached, a message appears whether you still want to continue the installation.

You can also conﬁgure multiple clusters on the same network. To conﬁgure multiple clusters on the same network, you need to install multiple Supervisors. During a Media Test Unit installation, in the Cerify System Settings dialog box, you must enter the respective Supervisor host name.

NOTE. To c onﬁgure a cluster, the versions of Cerify on the Supervisor and the Media Test Unit should be the same. Once the installation is complete, Cerify will be started on both the Supervisor and the Media Test Unit. Access Supervisor using Cerify Web UI and navigate to the Admin page, click the Media Test Units link to the page containing the list of Media Test Units.

Cerify Automated Video Content Veriﬁcation System User Manual 15

Getting Started System Installation

Upgrading and Uninstalling a Cluster. Insert the installer CD and follow the on-screen instructions. To

upgrade a cluster, do the following:

Upgrade Cerify on the Supervisor by running the latest version of installer and choosing Supervisor as installer type.

Upgrade Cerify on all of the Media Test Units by running the latest version of installer and choosing Media Test Unit as the installer type.

Refer to the Software Upgrade

To uninstall a cluster, do the following:

Uninstall Cerify on the Supervisor.

Uninstall Cerify on all of the Media Test Units.

Refer to t

Conﬁguring a N etwork Bridge. If the system has multiple network adapters, it is recommended that you

bridge all the network adapters.

1. From the Start menu, select Control P anel > Network Connections.

2. Select two network adapters at the same time, right-click and select Bridge Connections. Windows

3. Select the Network Bridge and conﬁgure a new IP address in the Properties menu for LAN

Installation Folders. During the installation process, select the following locations:

he Software Uninstallation

will build up a network bridge automatically. When the bridge is built successfully, the IP address of the two adapters disappears.

connections.

Installation Location: The folder where the application is installed.

(see page 19) section for instructions on upgrading.

(see page 18) section for instructions on uninstallation.

Temporary Storage Location: Before processing media ﬁles from an external server, Cerify may need to copy the remote ﬁles to the PC on which the Cerify application is installed. This folder is used as the location to store such temporary copies. Cerify copies the ﬁle only when operating in copy

ode an d accesses the ﬁle using the ftp://, smb://, or gvg:// protocols. See Modes of Operation

page 205) for help determining the mode that applies to your installation.

NOTE. Thereshouldbesufﬁcient free space in the temp folder to store large video ﬁles. The location for this temp folder can be on any drive on the computer.

If you would like multiple users to be able to run the Cerify application on the PC, make sure to select a location that has read and write permissions for those users. A temporary directory located within a users private directory is not suitable in this case.

16 Cerify Automated Video Content Veriﬁcation System User Manual

(see

Getting Started System Installation

Insert the Cerify Dongle.

Insert the Cer

ify license dongle supplied with the system in any of the available USB ports of your

computer.

NOTE. Do not insert the dongle before the Cerify installation. Insert the dongle only when the installer prompts you.

NOTE. If Cerify reports license failures a fter the dongle has been installed, it is possible that ﬁrewall software is interfering with the license service. Please ensure that port 1947 is open in any ﬁrewall software that is in use.

The number of ﬁles that can be simultaneously processed by Cerify will be the number of allowed c hannels speciﬁed in the dongle. If a time-expiry dongle is connected, the default number of ﬁles processed is 1.

Sometimes, you will need to change the number of ﬁles that can be simultaneously processed by Cerify. You can change the number of parallel processing channel setting by changing the value of the property “cerify.processorsperbox” in “cerify.properties” ﬁle located at

Direct

ory>/Cerify/JBoss/server/all/conf

<Installation

The following lists the different situations for standalone installation:

When Cerify is started with no dongle connected, then (irrespective of whether a value has been

speciﬁed in the “cerify.processorsperbox” property or not) the number of allowed channels is zero.

When Cerify is started with a perpetually licensed dongle and if the “cerify.processorsperbox” property

is not set then the number of allowed channels is controlled by the dongle.

When Cerify is started with any valid dongle and a valid number of channels is speciﬁed for the

“cerify.processorsperbox” property, then this value would be used if it is less than or equal to the

mber of channels controlled by the dongle. If the value is greater than the number of channels

controlled by the dongle then the number of channels controlled by the dongle takes precedence.

hen Cerify is started with any valid dongle and the number of channels speciﬁed for the

“cerify.processorsperbox” property is -1, then the number of allowed channels is controlled by the

dongle

When Cerify is started with a time-expired dongle a nd if the “cerify.processorsperbox” property is not

set, then the number of allowed channels is set to 1

Install Apple QuickTime Player.

To process Apple ProRes ﬁles or to process ﬁles using the Generic QuickTime Video template or to process ﬁles using the JPEG 2000 Video template, you have to install QuickTime Player. You can download

QuickTime player from the link http://www.apple.com/quicktime/download/

NOTE. If QuickTime Player is already installed, make sure that it is version 7.5.5 or later.

Cerify Automated Video Content Veriﬁcation System User Manual 17

Getting Started System Installation

Software Unin

Before uninstallation, ensure that you have administrator privileges. If you try to uninstall Cerify without administrato

Cerifycanbeuninstalledintwoways:

Through Start > Control Panel > Add or Remove Programs.

By rerunning the CerifySetup<version>.exe that you used to install the current version and following the on-screen instructions.

NOTE. If the Cerify installer version is higher than the currently installed version, the installation will be upgraded

If the Cerify installer version is lower than the current installed version, the installer will abort without taking a

NOTE. The Cerify installation process places the WinPCap and HASP utilities in the Add or Remove Progra

programs or you want to continue to use it for other purposes. The HASP drivers are uninstalled. If you want to uninstall WinPCap, this can be done in the usual way from the Add or Remove Programs list.

ms list. The uninstallation process does not remove WinPCap in case it is being used by other

stallation

r privileges, the uninstallation process will be aborted.

to the newer version.

ny action.

NOTE. If you select the Backup database option during uninstallation, the current database will be backed up to

sion>_<timestamp>

back up the database. All relevant conﬁguration ﬁles will be backed up to

Settings\<username>\Cerify\CerifyConfig_<version>_<timestamp>

abase" option will not be available if you are uninstalling the Media Test Unit, as the Media Test

dat Unit does not have its own database.

NOTE. If Cerify6.0 is uninstalled using Add or Remove Programs option or using Cerify6.0 installer, there will be no “backup” option. The Cerify database and conﬁguration ﬁles will always be backed up at the location installed, the installer will change the directory name “CerifyBackup” to “CerifyBackup_6.0”.

C:\Documents and Settings\<username>\Cerify\CerifyBackup_<ver-

C:\Documents and Settings\<username>\Cerify\CerifyBackup

Software Reinstallation

To reinstall Cerify, you must uninstall Cerify, and then rerun the installer. Rerunning the installer that was used to install the current version of Cerify will cause Cerify to be uninstalled. It does not repair the existing installation.

. You are given the option to change the directory where you want to

C:\Documents and

. The "Backup

. When Cerify7.2 is

18 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started System Installation

Software Upgr

To upgrade the current version of Cerify to Cerify version 7.2, run the setup ﬁle for version 7.2 and follow the on-

It is possible to upgrade in any of the following ways:

Standalone > Supervisor

Standalone > Standalone

Standalone > Media Test Unit

Supervisor > Supervisor

Supervis

Supervisor > Media Test Unit

Media Test Unit > Supervisor

Media Test Unit > Standalone

Media Test Unit > Media Test Unit

If you would like to back up the current database while you are upgrading from Supervisor or Standalone Cerify, choose the Backup database option during the upgrade process. The current database is backed up to the location

name>\Cerify\CerifyConfig_<version>_<timestamp>

by choosing a different folder for backing up the ﬁles.

ade

screen instructions.

or > Standalone

C:\Documents and Settings\<User

by default. You may change this location

The upgrade process also backs up relevant conﬁguration ﬁles from the current installation. These ﬁles are backed up to

n>_<timestamp>

sio

When you are upgrading to a Supervisor or standalone Cerify, the database is upgraded automatically after

e installation. If the database upgrade fails, the installer will install Cerify with a clean database and

th inform you about the failure. The Backup database option will not be available while upgrading from Media Test Units, as they do not have their own database.

C:\Documents and Settings\<User name>\Ceri fy\CerifyBackUp_<ver-

Cerify Automated Video Content Veriﬁcation System User Manual 19

Getting Started System Installation

Reverting to the previous version of Cerify

In some circumstances, such as a failed software upgrade,youmightwanttoreverttoanolderversionof Cerify. To do this, follow these steps:

NOTE. You should have a database backup and a copy of conﬁguration ﬁles from the version you would like to rever

1. Uninstall the current version of Cerify. While uninstalling, back up the database by selecting the Backup database option.

2. Install the older version of Cerify.

3. Restore the database of older version using CerifyDatabase Utility tool. For help on how to use this

tool, refer to Database Backup/Restore Utility

t to as a pre-condition.

(see page 187).

Network

In most circumstances, the PC on which Cerify is installed requires only one network interface. There are two sce the Web clients will access the Web user interface needs to be physically separate from the network that stores the media ﬁle assets. The second scenario is when the Cerify system is to access media ﬁles from a Grass Valley Proﬁle or K2 server. In this case, the additional network interface should be connected to the control network that runs the Grass Valley A MP service. This enables Cerify to list the contents available on the Grass Valley servers. The ﬁrst network interface on the PC should continue to be connected to the v

For a K2, it is possible to use direct FTP connectivity, in the same fashion as other video servers. In this case, the AMP control network does not need to be accessed and no additional network interface is needed.

Settings

narios where it is necessary to have two network interfaces. The ﬁrstiswhenthenetworkonwhich

ideo server network as follows:

On a standalone Proﬁle XP, to either the Media Ethernet card, if present, or the Ethernet interface of a

versal Interface Module (UIM), if present

Uni

On a SAN-based Proﬁle XP network, to the Gigabit Media network provided by a Universal Interface

dule, if present

On a SAN-based K2 network or a standalone K2 Media Client, to the Media/FTP network

20 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started Accessing the Application

Accessing the Application

Starting the A

Before accessing the Web user interface, it is necessary to start the application. The Cerify application is typically mightneedtobeprocessedduetotheuseofdropboxesorCeriTalk.

To sta rt th e Windows Start menu.

NOTE. Cerify will fail to start if any other Web services using port 80 are running on the system where Cerify is installed. You can run Cerify once you shut down other Web services running on port 80 on the system.

The startup time of the Cerify application can be up to 3 minutes. The application has started and is ready to use when you see a Cerify login page in your Web browser.

To run Cerify, the user should have administrator rights.

You can change the port number used by Cerify by updating the Cerify system property “cerify.http.port”. See Conﬁguring the Cerify Application properties.

NOTE. On start up, Cerify reads this port number from “cerify.properties” and checks to ensure that this

is not used by any other application. If it ﬁnds the port number speciﬁed to be in use, an error

port message detailing the failure is displayed and startup operation is aborted. If the system cannot ﬁnd any value set to this system property, it will use the default port number 80.

pplication

left running for long periods, even when there are no active users, because new jobs or ﬁ les

application, click the Start Cerify icon. Alternatively, the application may be started from the

(see page 186) for details on how to update Cerify system

Once the application has started, you can access the Cerify Web user interface from any computer on the same network. You can access the Web user interface using the URL

Address>:<http port>

Cerify Automated Video Content Veriﬁcation System User Manual 21

where <http port> is the value set for the property cerify.http.port.

http://<Cerify IP

Getting Started Accessing the Application

Cerify Window

Installation

1. Stop Cerify if it is running by right clicking on the Cerify system tray icon and clicking on Stop Cerify.

2. Install the

directory: CerifyService.bat install.

3. This will i Services utility. To access the utility, select Control Panel > Administrative Tools > Services.

After Ceri from the Cerify installation directory:

To stop th

To st art t he Cerify service, run CerifyService.bat start.

To uninstall the Cerify service, run CerifyService.bat uninstall.

Alternatively, after you have installed the service, you can control the Cerify service using the Windows Services utility.

ations

Limit

s S ervice

Cerify Windows service by running the following command from the Cerify installation

nstall and start Cerify as a service. You can see the new service called Cerify in the Windows

fy is running as a service, you can control the service by running the following commands

e Cerify service, run CerifyService.bat stop.

1. To install and control the service on Windows Vista, Windows 7, and Windows server 2008, you will

to login as a user Administrator. If you login as a different user with administrative privileges,

need you will have to do the following:

a. Ope

b. Right-click on cmd.exe and select Run as administrator.

c. In the resulting command window, change directory to the Cerify installation directory.

d. Run the instructions given in the previous section for installing and controlling the Cerify service.

2. If a MediaLocation is conﬁgured with a mapped network drive, then Cerify cannot access the ﬁles in

this MediaLocation until the user is logged into the system.

Starting a Cluster

Perform the following steps to start a Cluster:

1. Start Cerify on Supervisor unit by clicking Start > All Programs > Tektronix > Cerify > Start Cerify.

2. Start Cerify on Media Test Units by clicking Start > All Programs > Tektronix >Cerify Media Test Unit > Start Cerify.

3. Enter the URL http:// <Cerify host name> into your Web browser where Cerify host name is the

Supervisor host name.

n Windows explorer and navigate to

C:\WINDOWS\system32.

22 Cerify Automated Video Content Veriﬁcation System User Manual

Getting Started Accessing the Application

Accessing the

To access the application, you will need a Web browser installed on your computer.

To access the Web user interface from a remote computer, you need to know the IP address of the PC on which Cerify is installed in Standalone or Supervisor mode.

Enter the URL http://<Cerify IP address> into your Web browser where "Cerify IP address" is the IP address of the system, where Cerify is installed in Standalone or Supervisor mode.

NOTE. For cluster conﬁguration, Tektronix recommends that both the Supervisor and Media Test Units are conﬁgured with a static IP Address.

To access the Web user interface in a more convenient fashion on the PC on which Cerify is installed, click Start > All Programs > Tektronix > Cerify > Launch Cerify Web UI. This will automatically launch your default Web browser and take you to the correct Cerify Web page. Alternatively, you can do this by right clicking on the Cerify system tray icon and selecting Launch Cerify Web UI.

NOTE. To access the Web user interface on a Media Test Unit, click Start > All Programs > Tektr o nix > Cerify Media Test Unit >Launch Cerify Web UI.

Web User Interface

Logging in to the Application

When you access the Cerify Web page, you are presented with the Cerify application login screen.

1. Enter your Username and Password in the login page. Once these credentials have been correctly supplied, the Cerify Web browser will display the top level Jobs page

2. Use your mouse and keyboard to navigate this Web interface and enter information in the usual way.

NOTE. The default user name is “admin” and password is “admin”.

NOTE. If the user name and password are invalid, an error message appears, and you will remain on

the login page. There is no limit to the number of times you can attempt to log in. User names are case sensitive, so if you have trouble logging in, check the Caps Lock key. If you forget your password, contact the Cerify administrator.

CAUTION. If a session is inactive for a period, you will automatically be logged out. Any attempt to resume the session will redirect you to the login page.

Logging Out

(see page 27).

Click the text that reads Log out in the page header to log out of the application. This returns you to the login page.

Cerify Automated Video Content Veriﬁcation System User Manual 23

Getting Started Accessing the Application

24 Cerify Automated Video Content Veriﬁcation System User Manual

Operating Basics Concepts

Concepts

This section introduces the central concepts and entities used within the system. These entities and their relationships are shown in the following ﬁgure.

NOTE. The fol shows one of each type of entity. In practice, there can be many instances of each type of entity, with each child entity potentially being used by multiple parent entities.

lowing ﬁgure indicates the basic relationships between the entities. For simplicity, the ﬁgure

Entities

Users

Before using the system, you must log in with your username and password credentials. These credentials will have been assigned by a user who has administrator access.

By default, the system is installed with a single predeﬁned user whose name and password are both set to admin. This user has administrator access. It is recommended that this password is changed the ﬁrst time the administrator logs into the system. Administrator access rights allow a user to modify system properties, and in particular to create and modify MediaLocations

You can ﬁnd more information about users in the Modify User

page 105) sections.

Cerify Automated Video Content Veriﬁcation System User Manual 25

(see page 26) and Users.

(see page 105) and New User (see

Operating Basics Concepts

MediaLocations

A MediaLocation is a local or network ﬁle storage location from which the system can access media ﬁles. Typically, this would be a directory on the hard drive or a video server that provides FTP or Windows ﬁle share access. To create a MediaLocation, a user must supply its URL and the username and password required to access this URL. In addition, you must supply a unique name to be used within the system to identify the MediaLocation.

Only users with administrator access are able to create or modify MediaLocations.

Refer to Admin Page

MediaSets

A MediaSet is a collection of media ﬁles that you want to check.

A MediaSet can be a DropBox. A DropBox is a directory that is continually monitored for new media ﬁles. A MediaSet that is not a DropBox is simply a static collection of media ﬁles manually selected from one or more of the MediaLocations.

If a Job is associated with a DropBox, every ﬁle that appears in the DropBox over time will be processed.

For additional information, refer to MediaSets

Templates

To check a media ﬁle, you must deﬁne which checks should be applied when the ﬁle is tested. A Template is a collection of such checks chosen to perform speciﬁc tests that you require. The four types of Te

(see page 104) and MediaLocation Management (see page 106) for more information.

(see page 97).

mplates are:

Container Templates, which apply to the transport/container layer of a media ﬁle

Video Templates, which apply to the digital video content of a media ﬁle

Audio Templates, which apply to the digital audio content of a media ﬁle

Action Templates, which specify actions to be performed as a result of processing a media ﬁle

You can create multiple Templates of the same type for different purposes. For example, you might create a "Movies" Template, which contains a set of rules appropriate for HD MPEG-2 content, and an "on-line content" Template, which contains a set of rules appropriate for lower resolution H.264/AVC content.

For additional information, refer to Templates

26 Cerify Automated Video Content Veriﬁcation System User Manual

(see page 63).

Operating Basics Concepts

Proﬁles

AProﬁle gathers together a container, video, audio, and action Template, providing a complete set of checks that can be applied when you want to test one or more media ﬁles. Any of the component Templates can be omitted, depending on your requirements. For example, it makes no sense to apply any container or audio checks to a media ﬁle that consists solely of a video elementary stream.

You can deﬁne multiple Proﬁles for different purposes. Following on from the previous example, you might create an "on-line c ontent" Proﬁle, which speciﬁes a QuickTime Mov ﬁle wrapper in the container Template, H.264/AVC checks for the video Template, and AAC checks for the audio Template.

Jobs

For additional information, refer to Proﬁles

A Job is the term given to an individual testing process that can be run by the system. Each Job can process multiple media ﬁlesorasinglemediaﬁle, depending on the requirements of the user. The set of ﬁles processed by a Job is deﬁned by its MediaSet.

By creating a Job, you request the checks deﬁned b y a particular Proﬁle be applied to the ﬁles in a particular MediaSet. In addition, you must specify the name and priority of the Job. The system can queue multiple

The system processes one media ﬁle at a time.

How long it takes to process a Job depends upon a number of factors:

Jobs to be run, whereby each Job is scheduled to be processed according to its priority.

The resolution of the video being processed (the larger the picture, the slower the processing)

The video standard concerned (some standards, such as H.264/AVC, take more time to process)

The number o f tests selected (performing all the video quality checks can be processor intensive, because it requires the analysis of every pixel in each frame of video)

The b it rate (in general, the higher the bit rate, the slower the processing)

(see page 60).

Hardware performance of the PC on which Cerify is installed

For additional information, refer to Jobs

(see page 51).

Alerts

Alerts announce any checks that fail as a Job executes. Each alert indicates the severity of the failure, as well as where and why the check failed. The system gathers alerts associated with a particular Job, so that you can access the results from the top level and easily navigate to the details, such as which individual frames have Alerts.

The system organizes and summarizes any alerts raised against a particular Job, so that, at the top level, a single processing result status can be assigned to the Job. To view more detailed information, you can drill down through the interface, revealing (for example) which individual frames have raised alerts.

For additional information, refer to Alert Details

Cerify Automated Video Content Veriﬁcation System User Manual 27

(see page 57).

Operating Basics Functional Overview

Reports

Reports provide you with a way to query the system database and obtain information in a predeﬁned format. A Job report presents the results of a particular Job in tabular form.

For additional information, refer to Reports

Archiving

The system a llows you to archive entities that are no longer required. MediaSets, Templates, Proﬁles, and Jobs can all be archived.

When an entity is archived, it remains present in the database, and can be recovered if necessary. Archived entities are inactive and usually hidden from view. Inactive entities cannot be used to construct new entities. So, for example, if a Job is archived before completion, it will not process any pending media ﬁles.

For additional information, refer to Active/Archive View Control

Control (see page 32).

Cluster

ing

To increase processing throughput, units can be clustered. Each cluster consists of a single Supervisor unit an

In a clustered conﬁguration, the Supervisor unit hosts the database and the Web server. The Supervisor unit c interface. The Media Test Units are allocated media ﬁles to process by the Supervisor unit. The results of this processing are stored by the Supervisor unit into a single database.

(see page 103).

(see page 32) and Archive/Restore

d one or more Media Test Units.

ommunicates with the rest of the local network, accessing media ﬁles and serving the Web user

Functional Overview

This section gives an overview of the Cerify user interface.

System Tray Icon

The Cerify system tray icon appears in the system tray, near the clock, once the application is started. The system tra y icon provides menu items that allows easy control of the application.

Cerify system tray icon

28 Cerify Automated Video Content Veriﬁcation System User Manual

Operating Basics Functional Overview

Left-click the icon to launch the default Web browser and load the Cerify page showing the list of jobs in it.

Right-click the icon to bring up the system tray icon menu, which provides four options:

Launch Cerify Web UI, which launches the default Web browser and loads the Cerify page

showing the list of jobs in it.

About, which shows the About Box of the application. The About Box displays product details such as product name, version and copyright information. The About Box can be closed by simply clicking on it.

Stop Cerify, which stops all job processing and shuts down the application completely. The application takes about 2 to 3 minutes to shut down completely. Note that shutting down the Web browser when using the Web user interface does not stop Cerify or stop any jobs running.

CAUTION. Do not stop the application or its component services using the Microsoft Windows Task Manager. Always use the system tray menu for shutting down the application.

Launch Cerify User manual, which launches the user manual PDF.

Cerify system tray menu

Web User Interface

The user interface consists of a structured collection of various types of pages accessed using a Web browser. The pages contain a page header, page body, and footer. The pages can contain the following elements:

Icons (see page 30)

Navigation bar (see page 31)

Trail widget (see page 32)

Active/archive view control (see page 32)

Archive/restore control (see page 32)

Tables (see page 33)

Footer (see page 34)

Cerify Automated Video Content Veriﬁcation System User Manual 29

Operating Basics Functional Overview

Icons

The following table lists the icons used in the interface.

Icon Description

Collapse this section

Expand this s

ection

Copy this item

Remove this item

Edit this item

archive

eport

u to generate Job processing reports.

your Job (refer to Archiving

e Job to archive by selecting the checkbox in the left column of the Jobs Monitor table.

the Job.

(see page 28)), go to the Jobs Monitor page by clicking the

(see page 31).

Archiving a Job

2. To view archived Jobs, set the Active/Archive view control to All or Archived. The table will be updated to reﬂect your choice. You can restore archived Jobs from this new view, if required.

iaSets, Templates, Proﬁles, and Jobs can all be archived.

Med

48 Cerify Automated Video Content Veriﬁcation System User Manual

Operating Basics Tutorials

Exporting Templates

1. To export your Templates, go to the Templates page by clicking the Te mpla tes buttononthe

Navigation Bar

2. Select the Templates to export by selecting the checkbox in the left column of the appropriate Template table.

3. ClickontheExport button at the bottom of the page to export the selected Template.

(see page 31).

4. When prompt the location you select.

Importing Templates

1. To import the XML Template ﬁle generated by Exporting Templates (see page 49),gototheTemplates page by clicking the Templ a tes buttonontheNavigation Bar

2. Click the Browse button at the bottom of the page to access the Open File dialog.

3. Navigate to the location where the ﬁle is, select it, and click Open.

4. Click o the option If a template of the same name already exists, replace it, and then import the template.

5. The Te displayed on the Te m plat e s page.

NOTE. There is a range of example templates in the

Templates

canviewthemintheTemplates page.

ntheImport button to import the selected ﬁle. A template with the same name will exist, select

mplates deﬁnedintheﬁle will be successfully imported, and a success message will be

directory that may be useful to you. The example templates are preloaded onto Cerify and you

ed, select a location to save the Templates ﬁle, and click Save.Theﬁle will be saved to

(see page 31).

<installation dire ctory>/Example

Cerify Automated Video Content Veriﬁcation System User Manual 49

Operating Basics Tutorials

50 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Introduction

Introduction

This chapter provides a reference guide for users. Itisorganizedinmuchthesamewayastheuser interface is organized, with sections for each main page and subsections for the subpages.

Jobs

A Job applies the various checks in a Proﬁle (see page 60) against the media ﬁles in a MediaSet (see

page 97).

A Job is identiﬁed by its unique name. In addition, a Job is assigned a Priority upon creation.

The top-level Jobs page is accessed by selecting the Jobs button from the navigation bar. When you open this page, you will be presented with a Table the Archive/Restore Control will be d

isplayed.

(see page 32). If no Jobs match the current ﬁlter, an informative message

(see page 33) displaying Jobs that are ﬁltered according to

Jobs Monitor

The Jobs Monitor page provides a top-level view of the status of Jobs. The following ﬁgure shows the status of three Jobs. One Job is succeeded with no errors or warnings; the remaining two have raised errors.

NOTE. In this example, the user has limited both how many rows and which columns of the Jobs Monitor are displayed.

The Jobs Monitor page

Cerify Automated Video Content Veriﬁcation System User Manual 51

Reference Jobs

From this page it is possible to:

View Job Details (see page 54) for a Job by clicking on the Job name.

View the details for the Job MediaSet (see page 97) and Proﬁle (see page 60) by clicking on the MediaSet or Proﬁle name.

Create a New Job (see page 52) by clicking the New Job button.

Create a New Job (see page 52) by clicking the copy icon.

Modifying Jobs (see page 53) by clicking the jobs to be modiﬁed, selecting the required action from

the Archive/Restore control and clicking the Go button.

New Job

The New Job page is accessed either by copying an existing Job (see page 51), or by creating a new Job.

TheNewJobpage

You should enter a Job Name,setthePriority, and choose a Proﬁle and a MediaSet, before clicking the Create button to create the Job.

TION. Jobs cannot be created unless one or more MediaSets

CAU

are active. If this is not the case, then any attempt to create a Job will generate a Work Flow Error

(see page 36).

(see page 97) and Proﬁles (see page 60)

52 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Jobs

Modifying Job

It is possible to modify the state of existing Jobs in a number of ways, using the same Archive/Restore

control (see p

To modify a Job, do the following:

1. Select the Jobs you want to modify by selecting the checkbox in the left column of the Jobs M onitor table.

2. Select the desired action from the action drop-down menu under the table.

3. Click Go to carry out the action.

It is possible to select the following actions:

Archive, Restore from archive. Used to remove from view or restore to view the selected Jobs. Note that archiving processing Jobs will automatically cause those Jobs to be immediately stopped. When the Job is removed from the archive, it will remain in the stopped state until the user chooses to resume the Job. This is to prevent unwanted processing of Jobs occurring when the Job was complete at the point of archive, but could restart processing when removed from the archive because the a ssociated MediaS

Stop (ﬁnish current ﬁles), Stop (immediately). Stop processing the Job. Results of media ﬁles that h resumed when desired. The ﬁrst option allows media ﬁles that are currently being processed to run to completion, whereas the second option will immediately terminate all processing. In the latter case, all results from the currently processing media ﬁles for that Job will be removed, and if the Job is resumed, processing will restart from the beginning of the media ﬁ le.

age

32) that is described in the Archiving Tutorial (see page 48).

et has had new ﬁles placed in it.

ave already been completed will be re tained and processing of unprocessed media ﬁles can be

Resume. Resume the processing of a stopped Job. Any media ﬁles that have not yet been processed will begin processing.

Setprioritytohigh, Setprioritytomedium, Setprioritytolow. Change the priority of the selected Jobs to the new priority. This will affect waiting Jobs and the priority which are assigned to unprocessed media ﬁles in currently processing Jobs. Changing Job priorities never causes a currently

unning media test process to be stopped.

Delete. Delete the selected Jobs from the database. All the results associated with that Job, including stream information, alert details and thumbnails, will be permanently deleted. Use the archive functionality if you want to remove the Job from view, but be able to revisit the results in future.

Cerify Automated Video Content Veriﬁcation System User Manual 53

Reference Jobs

Job Details

The Job Details page is accessed from the Jobs Monitor (see page 51) page. It provides summary details for a ll the media ﬁles in the Jobs MediaSet as shown in the following ﬁgure.

This page also provides an option to playback the media ﬁles in the Jobs MediaSet. This option becomes available only when the VLC playback

(see page 113) feature is enabled.

The Jobs

To see exactly which errors caused the Job to fail, click either the ﬁle name. This will take you to the Processing Result

Clicki

To play back the media ﬁle, it must satisfy the following conditions:

Details page

processing result icon or the media

(see page 55) page.

ng the

The media ﬁle has not moved from the original location from where it was analyzed

The media ﬁle has an encoding scheme that is supported by the VLC media player

play button starts the playback of the m edia ﬁle using t he VLC media player.

54 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Jobs

Processing Result

The Processing Result page provides information on the alerts raised by a particular media ﬁle. This page also displays the stream information for the media ﬁle concerned. Stream information is grouped into three separate sections: Container Info, Video Info, and Audio Info. Where there are multiple audio tracks in the s tream, all track information is displayed. You can select the extent of stream information that gets displayed on this page u sing the stream information display

Stream information is updated as processing progresses. Many properties (such as "Picture size" or "Video standard") will be available shortly after processing begins, and others (such as "Length") will only be available processing. The values displayed will always be the most recent values encountered in the stream.

If the VLC player has been installed and enabled, you can also play back the media ﬁle from this page by selecting the play button that is available against eligible alerts.

after processing is complete. Some properties may be output and subsequently updated during

(see page 113) setting.

The P rocessing Results page

Cerify Automated Video Content Veriﬁcation System User Manual 55

Reference Jobs

You can drill down for more Alert Details (see page 57) on a particular alert by clicking either the processing result icon or the title of the alert.

Alert Levels

Four different levels of alerts can be reported by Cerify according to the severity of the issue: fatal, error, warning, and info.

Fatal

A fatal alert occurs when it is not possible for the system to complete processing of a media ﬁle and the processin syntax error that makes that stream completely unintelligible or an option being present in the bitstream that is not supported by the decoder. Alternatively, the alert might be caused by a system problem, such as a license error, or failure to copy a media ﬁle off a video server.

Error

g is terminated. This might be caused by something in the media ﬁle bitstream, such as a severe

An error alert occurs where the media ﬁle fails a check speciﬁed by one of the Templates that the media is being checked against. Alerts raised by syntax checking will be given an error status if they have the

ial to prevent correct decoding of the stream. An example of this is where an out of range value

potent has been used in a bit stream.

Warning

A warning alert indicates that there is some issue with the stream, but that this is not necessarily a problem. This might be that a certain number of alerts has been exceeded or that the bitstream is non-compliant in some minor way that almost certainly will not affect the decoding of the stream.

Info alerts are relatively rare, and are used to inform users of additional useful information that will not

use a problem.

56 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Jobs

Alert Details

The Alert Details page provides more information on an individual alert, including thumbnail images of surrounding frames (where appropriate). The thumbnail images link to full Frame View of these frames.

(see page 59)

The Alert Details page

The table within the details section provides speciﬁc details about the alert. Each of the table columns is outlined below.

Column Description

Level

Alert ID

Location

Start Optional column, only present for quality alerts. For more information, refer to, sta

End

Channel Index Optional column, only present for audio quality alerts (see page 88).Whenprocessing

Channel Name Optional column, only present for audio quality alerts (see page 88). The name of the

Title

You can r efer to alert levels for detailed description.

Unique alert ID. See alert IDs

This is the position relative to the start of the stream where the alert was generated. For quality alerts, a more detailed description is given i n start and end positions of

quality alerts (see page 58).

end positions of quality alerts (see page 58).

Optional column, only present for quality alerts. You can refer to start and end positions

of quality alerts (see page 58) for detailed description.

a multi-channel audio stream, this index will indicate the channel to which the ale applies. Channel indices start from 1.

channel to which the alert applies, as given by the audio standard.

Description of alert type. This will always be the same for a given alert ID.

(see page 56) and their associated icons (see page 119)

(see page 119).

rt and

Cerify Automated Video Content Veriﬁcation System User Manual 57

Reference Jobs

Column Description

Details

Thumbnail

xxx

Details of the the test failed.

Thumbnail of the video frame (if available) at the a lert location. Click the image to view the full Frame View

alert speciﬁc to this occurrence. This should provide a reason as to why

(see page 59)

Start and End Positions of Quality Alerts

The quality alerts ( video quality (see page 78) and audio quality (see page 88) ) are special in that they can apply to a range of video or audio. This is in contrast to most alerts, which have an instantaneous position. Because of

The start position of the error condition

The location at which the error condition exceeded its permitted length

The end position of the error condition

Only one alert will be raised for a given error condition sequence, regardless of length.

Example: A rule is set up to disallow more than 5 seconds of black during video. A video clip has an unwanted sequence of 30 seconds of black beginning at 1m 20s. Cerify will generate a single video quality alert with the following information:

this, quality alerts within Cerify contain the following additional information:

Start: 1m 20s - the start of the black sequence

Location: 1m 25s - the point at which 5 second limit was exceeded

1m 50s - the end of the black sequence

End:

58 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Jobs

Frame View

The Frame View Page shows a larger thumbnail image of the Frame. This thumbnail is based upon a down sampled version of the full frame, using the top ﬁeld only for interlaced content, so in some cases the detected artifact may not be visible. Red rectangles highlight any areas of the frame that generated alerts.

The "next" and "prev" links at the bottom of the frame image allow navigationacrossframesinthe ﬁlm-strip display for the alert. These links are displayed based on the position of the current frame in the ﬁlm-str frame has only the "prev" link on it.

ip. The ﬁrst frame of the ﬁlm-strip has only the "next" link associated with it and the last

The Frame View page

Cerify Automated Video Content Veriﬁcation System User Manual 59

Reference Proﬁles

Proﬁles

AProﬁle gathers together a Container (see page 71), Video (see page 74), Audio (see page 86) and

Action page 97).Anyof

The top-level Proﬁles page is accessed by selecting the Proﬁles button from the navigation bar. When you open thi to Active/Archive View Control message will be displayed.

(see page 93) Template, providing a complete set of checks that can be applied to a MediaSet (see

the component Templates can be omitted, depending on user requirements.

s page, you are presented with a table

(see page 32).IfnoProﬁles match the current ﬁlter, an informative

(see page 33) displaying Proﬁles ﬁltered according

oﬁles page

The Pr

the top-level Proﬁles page

From

Archive and restore Proﬁles

View Pro ﬁle details (see page 61) by clicking the Proﬁle name in the ProﬁleName column.

Edit a Proﬁle (see page 61) by clicking the edit icon.

Create a new Proﬁle (see page 62) by clicking the New Proﬁle button.

Create a new Proﬁle from an existing one (see page 62) by clicking the copy icon.

(see page 60), it is possible to:

60 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Proﬁles

Proﬁle Detail

The Proﬁle Details page shows detailed information about a Proﬁle.

The Proﬁle Details page

Edit Proﬁle

AProﬁle can be edited to change its constituent Templates:

ainer

Cont

Vid eo (see page 74)

Audio (see page 86)

Action (see page 93)

(see page 71)

Cerify Automated Video Content Veriﬁcation System User Manual 61

Reference Proﬁles

The Proﬁle name and description cannot be changed.

Edit Proﬁle page

Click the Update button to submit changes to the Proﬁle

New Proﬁle

The New Proﬁle page is accessed either by copying an existing Proﬁle or by creating a new Proﬁle.

(see page 60).

The New Proﬁle page

To create a new Proﬁle,enteranamefortheProﬁle and, optionally, a description, and select the desired

Templates

next to the audio ﬁeld. Click the Create buttontocreatetheProﬁle.

62 Cerify Automated Video Content Veriﬁcation System User Manual

(see page 63) from the drop-down menus. To add a second audio template, click the plus icon

Reference Templates

Templates

Templates allow you to collect together rules to be used or actions to be taken when checking ﬁles in a

MediaSet

The four types of Templates are:

(see page 97).

Container Templates (see page 71), which gather rules applying to the container layer

Video Templates (see page 74), which gather rules applying to video elementary streams

Audio Templates (see page 86), which gather rules applying to audio elementary streams

plates

Action Tem

events

(see page 93), which gather actions to be performed when generating Job processing

The top-l When you open this page, you are presented with tables and Action Templates ﬁltered according to Active/Archive View Control match the current ﬁlter, an informative message will be displayed. The following ﬁgure shows a Container Template, a Video Template, an Audio Template, and an Action Template.

evel Templates page is accessed by selecting the Templa t es button from the navigation bar.

(see page 33) displaying Container, Video, Audio,

(see page 32). If no Templates

Cerify Automated Video Content Veriﬁcation System User Manual 63

Reference Templates

64 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Templates

NOTE. Some example templates are preloaded onto Cerify. These templates can be used, copied, edited, and archived in the same way as those created by users. The XML ﬁles containing these templates can be found in <Inst

From the top-level Templates page (see page 63) it is possible to:

Archive and restore Templates (see page 32)

View details of a Template (see page 66) by clicking its name in the Template Name column

Edit a Template (see page 67) by clicking the edit icon

Create a new Template (see page 68) by clicking the New Template button for the type of Template (see page 63) required

Create a new Template from an existing one (see page 68) by clicking the copy icon

Export Templates (see page 69)

Import Templates (see page 70)

allation directory> /Example Templates.

Cerify Automated Video Content Veriﬁcation System User Manual 65

Reference Templates

Template Details

The Template Details page shows detailed information about a Template, but does not allow the details to be changed.

The Template Details page

66 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Templates

Edit Template

A Template can be edited to change the Template Name, Description, and Template rule parameters. In the following ﬁgure, the user has entered a Te mpla t e Name and description, and has enabled some rules. Not all of the rules for the Template are shown.

The Edit Template page

Click the Update button at the bottom of the page to submit changes to the Template. This will also update the version of the Template.

Cerify Automated Video Content Veriﬁcation System User Manual 67

Reference Templates

New Template

The New Templa te page is accessed either by copying an existing Template, or by creating a new Template

(see page 63).

To create a new Template, determine the type of Template you want to create and click the corresponding New Container Template, New Video Template, New Audio Template,orNew Action Template button.

In the following screen, select the standard for the Template you want to create. For a Video Template, this might be MPEG-2, MPEG-4 or some other video standard. The resulting New Template page is very similar to the Edit Template

Enter a name for the Template and, optionally, a description. Finally, you must set up the Template rule deﬁnitions.

Template rules specify precisely what to check when processing content. For example, a Template rule might require that video content has a certain resolution, or that the audio stream has a certain bit rate. The Template rules that can be deﬁned depend upon the type of Template and its standard.

For more details on each rule, refer to the descriptions in the following sections on Container Templates

(see page 71), Video Templates (see page 74), Audio Templates (see page 86) and Action Templates

(see pa

93).

(see page 67) page.

To ﬁnd more information about a rule when deﬁning a Template, click the

Template rules are enabled and disabled by clicking the checkbox on the left side of the Edit Template page. A Template can contain a single enabled rule or many enabled rules. Different rules require different parameters to be deﬁned, depending on the type of rule. For example, a rule that speciﬁes video resolution

l require you to enter the expected number of pixels.

wil

When you have ﬁnished deﬁning all of the rules, click the Create button at the bottom of the page

reate the Template.

to c

If you are uncertain as to what rules and parameter values to use, try looking at one of the preloaded

ample templates and gradually adjust the rules until you are comfortable with the operation of the

ex template.

f you have imported a database from an earlier version of Cerify (before 6.x), the pre-loaded example

I templates will not be available. In this case, they can be imported as described in the Importing Templates

(see page 49) section.

next to the rule name.

68 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Templates

Multiple Sets of Values

Some of the rules in Container, Video and Audio Templates accept multiple sets of values. You can deﬁne these rules like any other - with a single set of values, or you can deﬁne multiple set valid values. If you use multiple sets, the test will pass if the value matches any of the sets.

These rules can be recognized by the add/remove buttons to the right of the rule.

Rules that accepts multiple sets of values

To add another set of valid values to the rule, click on the at the bottom of the rule. You can add as many new rows as you need.

To remove any set of values from the rule, click on the row will disappear from the rule. You can remove all rows but one.

Exporting Templates

Templates can be exported from the top-level Templates page. Once exported, Templates can be imported into any Cerify system running a compatible version of Cerify. Any numbe (Container, Video, Audio and Action) and status (Active or Archived), can be exported to a single ﬁle.

NOTE. When exporting Action Templates, passwords used by rules to access remote locations are not exported.

To export a set of Templates, select the templates you want to export by checking the corresponding check boxes in the leftmost column of the Templates tables and pressing the Export button at the bottom of the page. Choose a location to save the Templates export ﬁle to when prompted. Exported Template ﬁles use XML to store template information, following the Template Information schema deﬁnition.

If you are v iewing this page from the Help pages in the Cerify Web interface, you can click the following link to view the Template Information schema deﬁnition

Add button. A new row of inputs will appear

Remove button to the right of that row. The

rofTemplates,ofanytype

To download the Template information XML schema:

In Microsoft Internet Explorer, right-click the above link and select the Save Target As option from the pop-up menu.

In Mozilla Firefox, right-click the above link and select the Save Link As option from the pop-up menu.

If you are viewing this page from a printed or a PDF version of the Cerify use

http://your_cerify_host/TemplateInformation.xsd,replacingyour_cerify_host with the

IP address or host name of your Cerify system, to view the Template Information Schema deﬁnition.

When a table contains too many Templates to ﬁt on a single page, the system will split it to be displayed over a number of pages. If you cannot see all the Templates you want to export in the tables, you may

Cerify Automated Video Content Veriﬁcation System User Manual 69

r manual, access the URL

Reference Templates

need to change the number of Records per page (see page 104) to allow more Templates to be shown on each page. You may also need to change the Active/Archive view and/or Archiv

ed Templates.

(see page 32) to display both Active

Importing Templates

Any Template ﬁle generated by exporting Templates as described in Exporting Templates (see page 49) can be imported into any Cerify system running a compatible version of Cerify. This is done from the top-level Templates page

NOTE. There are some example template XML ﬁles in the directory "Example Templates" inside the directory where the Cerify application is installed. These templates are preloaded into Cerify when it is ﬁrst in

stalled.

NOTE. After importing Action Templates, it is necessary to edit them and re-enter the appropriate passwor

ds for rules that access local/remote locations.

(see page 63).

To import a set of templates, click the Browse button at the bottom of the Templates page to access the

Open Fi

le dialog box. Using this dialog box, navigate to the location of the template ﬁle to import, select

it, and click Open. Select the “If template of the same name already exists, replace it” checkbox to update the templates of the same name and standard which already exist in Cerify. If you do not select this option, templates in the ﬁle with a name that already exists in Cerify will not be imported. Finally, click the Import button to import templates from the selected ﬁle.

If all Templates in the ﬁle are successfully imported, a success message will be displayed on the Templates page. More detailed messages, listing all imported Templates, can be found in the Admin Log

(see

page 115).

If any of the Templates in the ﬁle cannot be imported, an error message will be displayed on the Templates page. More detailed error messages, listing all imported Templates and all individual errors, can be

und in the Admin Log.

There are three groups of errors that can prevent a Template from being successfully imported:

System Level Errors

System Level errors are raised when the ﬁle being imported does not conform to the Template Information schema deﬁnition. If you are viewing this page from the Help pages in the Cerify Web interface, you can click the following link to view t he Template Information schema deﬁnition

Message in Adm in Log Cause

Error importing templates: File does not validate against schema.

xxx

The ﬁle being imported does not conform to the schema.

70 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Container Templates

Template Level Errors

Template Level errors are raised when a Template in the ﬁle being imported is not valid, and cannot be imported. Other valid templates within the XML ﬁle will still be imported. There are three types of Template Level Errors:

Error message Cause

Error in Template "X": Template could not be imported. A Template w ith that name already exists. Select the "If template already exists, replace it" option when importing to overwrite the existing version.

Error in Template "X": Template could not be imported. Attempt has been made to create a template for an unrecognized standard.

Error in Template "X": Template could not be imported. Mandatory rules Y, Z not present.

xxx

There is a Template in the ﬁle to be imported named "X", but a Template named "X" already exists in Cerify. If the "If template already exists, replace it" option is not selected, this error will be raised. If it is selected, Template "X" will be updated with the new version being imported.

There is a Template in the ﬁle to be imported named "X". The standard deﬁned in the ﬁle for this Template is not one of the Video, Audio, or Container standards recognized by Cerify.

There is a Template in the ﬁle to be imported named "X". Rules Y and Z, which are mandatory for the standard of that Template, are not present in that Template. Mandatory rules are those that always appear checked when creating a Template using the Web UI and cannot be unchecked. For example, Alert Limit and Particular Alert Limit.

Rule Level Errors

Rule Level errors are raised when a Template in the ﬁle being imported includes an invalid rule; in this case, the Template is partially imported, excluding the invalid rule. There are four types of Rule Level Errors:

Error message Cause

Error in Template "X": Rule "Y" could not be imported. A rule ID submitted has not been recognized.

Error in Template "X ": Rule "Y" could not be imported. The rule input name submitted ("A") is not recognized.

Error in Template "X": Rule "Y" could not be imported. "A" is required.

Error in Template "X": Rule "Y" could not be imported. The value "x" submitted for the rule input "A" is not a valid option.

Error in Template "X": Rule "Y" could not be imported. "A" is not a number.

xxx

Container Templates

Rule "Y" deﬁned in Template "X" is not recognized as a valid rule.

Rule "Y" deﬁned in Template "X" is invalid as one of the inputs deﬁned for it, "A", is not recognized as belonging to that rule.

Rule "Y" deﬁned in Template "X" is invalid as one of the inputs deﬁned for the rule, named "A", must have a valid value but is either empty or not present in the import ﬁle.

Rule "Y" deﬁned in Template "X" is invalid as the value "x" supplied for input "A" is not valid.

Container Templates collect together rules applying to the wrapper or container layer.

Cerify Automated Video Content Veriﬁcation System User Manual 71

Reference Container Templates

Checks Common

Check Description

Standard Conﬁrms that

Integrity c

Suppress Alerts

Alert li

Indiv limit

File

Play time

Bit rate

Video streams

Audio streams

A duration

Skip First Few Alerts

Skip Last Few Alerts

xxx

hecks

mit

idual Alert

size

udio/video

to All Container Layers

the container layer is of the type indicated in the Template (for example, MPEG-2

Transport Stream). This check is mandatory and cannot be disabled.

Trying to treat a container format wrongly, for example processing an MPEG-2 Transport Stream as MXF, will a immediately in the event of a mismatch between observed and expected container format.

Checks the syntax and integrity of the container layer; that is, the problems in the wrapper ﬁ le, but not in the elementary streams.

NOTE. Ceri

serious errors that prevent the correct interpretation of the stream. This check is mandatory and cannot be disabled.

Alerts may be suppressed individually by entering the alert ID into the text ﬁeld titled Suppress alert IDs.Note

alert limits set by the Alert limit or Individual Alert limit.

This rule can be used to limit the number of container alerts raised. It is not possible to switch off this check; however the value can be set to a maximum of 10,000.

Clickin alert limit is exceeded. In this case, certain stream properties that require the whole ﬁle to be processed (such as length of stream) are not reported. Similarly, end of stream test cases will not be executed. If the che be suppressed and not shown. In either case, an alert will be raised, indicating that further alerts have been suppressed. If the alert limit has been exceeded, fatal alerts will still be displayed.

Note t container alert.

This rule can be used to limit the number of container alerts with the same ID number. This prevents the results being swamped by a particular container alert. It is not possible to switch off this check;

ver, the value can be set to a maximum of 10,000. This value should be kept lower than the Alert

howe limit value, since the latter takes precedence.

Checks the size of the input ﬁle in bytes. For container layers that support external references (for example MXF and QuickTime ﬁles) this does not include the sizes of the external ﬁles.

Checks the stream play time, deﬁned as the maximum play time of all decoded audio and video streams.

This tests the bit rate for the stream, calculated as the ﬁle size divided by the play time, as deﬁned above.

ltiple sets

is tests the number of video elementary streams contained within the container layer.

his tests the number of audio elementary streams contained within the container layer.

hecks that the audio stream duration is longer than the video stream duration by a minimum amount

C but not by more than the maximum speciﬁed amount.

This rule can be used to suppress the audio and video alerts for the ﬁrst few frames or milliseconds of the ﬁle.

This rule can be used to suppress the audio and video alerts for the last few frames or milliseconds of the ﬁle.

lmost certainly lead to spurious alerts. Cerify will raise an alert and cease analysis

fy does not perform full syntax checks for container layers, and is limited to reporting

that fatal alerts can never be suppressed. Suppressed alerts will not count towards any of the

g the "Terminate processing if limit is exceeded" checkbox causes ﬁle processing to stop if the

ckbox is not checked, processing will proceed to completion but any further container alerts will

hat the Individual Alert limit can be used to prevent the results being swamped by a particular

(see page 69) of valid values can be deﬁned for this rule.

72 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Container Templates

Container Che

Check Description

Packet size

CableLabs VOD

DVB Closed Caption

DVB Telet

Video PID

Audio PID

xxx

cks Speciﬁc to MPEG-2 Transport Stream Standard

cket size used by the MPEG-2 Transport Stream. This can be 188, 192, 204, or 208

ll be reported as a synchronization error.

gainst some of the requirements of CableLabs Video-On-Demand Content Encoding Proﬁles

ams must have stream_type equal to 0x02 (MPEG-2); that an MPEG-2 video stream is on

ption data. Such a PID must include a VBI_data_descriptor (as described in ETSI EN 301

ing a txt_data_ﬁeld() element.

that the decoded video stream was found on a speciﬁc PID or PIDs. Multiple PIDS can

yusingthe'0x'preﬁx.

s that the decoded audio stream was found on a speciﬁc PID or PIDs. Multiple PIDS can be

ext

Checks the pa bytes. Packet size is deﬁned as the separation between sync_bytes in the MPEG-2 transport stream. This is a check on the separation of the ﬁrst pair of sync_bytes only. If the packet size varies later in the stream, it wi

This tests a Speciﬁcation (MD-SP-VOD-CEP-l01-040107). The checks are: that the transport stream contains a single Program only; that audio streams must have stream type equal to 0x81 (Dolby Digital); that video stre PID 0x1E1; that a Dolby Digital audio stream is on PID 0x1E2, and any other audio streams follow on consecutive PIDs; that the Program Clock Reference (PCR) occurs in PID 0x1E1 (the video stream).

Checks that the Program Map Table associated with the decoded video stream includes a PID with Closed Ca

775) containing a c losed_captioning_data_ ﬁeld() element.

Checks that the Program Map Table associated with the decoded video stream includes a PID with Teletext data. Such a PID must include a VBI_data_descriptor (as described in ETSI EN 301 775) contain

Checks be speciﬁed using a comma-separated list, and/or PID ranges. For example, "128-130,481" checks that the video stream is on any of PIDs 128, 129, 130 or 481. Hexadecimal PID numbers can be given b

Check speciﬁed using a comma-separated list, and/or PID ranges. For example, "482-484,4098" checks that the video stream is on any of PIDs 482, 483, 484 or 4098. Hexadecimal PID numbers can be given

ng the '0x' preﬁx.

by usi

If this rule used on a ﬁle which contains no audio stream, an alert will not be generated. To catch this case, use the "Number of audio streams" rule.

Container Checks Speciﬁc to MPEG-2 Program Stream Standard

Check Description

VBI

Video

Audio

Pack header

System header Checks for the presence of a system_header PS packet type as indicated by the presence of packets

Program Stream Map

Checks for the presence of Pinnacle Vertical Blanking Information, as indicated by the use of Pinnacle proprietary syntax in private_stream_2

Checks for the presence of at least one video stream as indicated by the presence of packets with a stream_id in the range 0xE0 - 0xEF inclusive

Checks for the presence of at least one audio stream as indicated by the presence of packets with a stream_id in the range 0xC0 - 0xDF inclusive

Checks for the presence of a pack_header PS packet type as indicated by the presence of packets with the start code 0x000001BA

with the start code 0x000001BB

Checks for the presence of a program_stream_map PS packet type as indicated by the presence of packets with the start code 0x000001BC

Cerify Automated Video Content Veriﬁcation System User Manual 73

Reference Video Templates

Check Description

Program Stream Directory

Private Stream1Checks for the presence of private_stream_1 as indicated by packets with stream_id = 0xBD

Private Stream2Checks for the presence of private_stream_2 as indicated by packets with stream_id = 0xBF

Checks for the packets with the start code 0x000001FF

presence of a program_stream_directory PS packet type as indicated by the presence of

Padding stream

xxx

Checks for t

he presence of padding_stream as indicated by packets with stream_id = 0xBE

Container Checks Speciﬁc to SMPTE 377M / MXF Standard

Check Description

Operational Pattern

Footer Partition

Clip Duration Compares the duration of the decoded video stream against the duration of the material package

Clip Start Timecode

xxx

Checks the Operational Pattern reported by the MXF ﬁle.

Tests that a footer partition pack is present at the end of the MXF ﬁle. A missing footer partition often indicates that a ﬁle has been truncated, and might cause problems for editing software and other systems.

deﬁned in the MXF ﬁle, and alerts if they are different. There is a tolerance of 1 video frame duration.

A failure of this test might mean that the MXF ﬁle has been badly packaged or truncated.

Tests the start timecode of the MXF ﬁle material package. It is possible to specify a minimum, a maximum, or both. Timecodes must be given in the format HH:MM:SS:FF (where FF is frame number).

Video Templates

Video Templat es gather rules applying to video elementary streams.

Common Video Conﬁguration Checks

Check Description

Standard Checks that the input ﬁle is encoded to the expected standard. Without this check, an MPEG-2 ﬁle

(for example) could pass an MPEG-4 Video Template provided that the Template did not test any MPEG-4 speciﬁc features.

Since treating an MPEG-2 stream as MPEG-4 will almost certainly lead to spurious alerts, Cerify will raise an alert and cease analysis immediately in the event of a mismatch between observed and expected standard.

If the media ﬁle does not contain a video stream, a n alert will be raised and processing will terminate immediately.

Syntax Checks Enables strict testing for compliance to the detected standard. This will generate alerts for corrupted

streams, and streams generated by misconﬁgured or noncompliant encoders. Each type of alert has a numeric ID, which is shown in the Alert Details page.

74 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Video Templates

Check Description

Suppress Alerts

Quick Check Enabling the

Alerts can be s alert IDs) as well as in a predeﬁned group selected from the list. Note that fatal alerts can never be suppressed. Suppressed alerts will not count towards any of the alert limits set by the Alert limit or

Individual Al

rule lets you quickly gather basic stream information and perform checks on them without performing a full decode of the asset. S tream information thus gathered can also be used by automation clients using the CeriTal based on stream attributes. The following tests will not be run when performing a Quick Check:

Container Templates:

uppressed individually (by entering the alert ID into the text ﬁeld titled Plus ad dition al

ert limit.

Quick Check rule prompts Cerify to run a partial check of the media ﬁle being tested. This

k API to select an appropriate Proﬁle to apply to the media ﬁle or to perform content sorting

File size

Play time

Bitrate

Has Pinnacle VBI (MPEG-2 Program S tream)

Has Video Stream (MPEG-2 Program Stream)

Has Audio Stream (MPEG-2 Program Stream)

Has System Header (MPEG-2 Program Stream)

Has Program Stream Map (MPEG-2 Program Stream)

Has Program Stream Directory (MPEG-2 Program Stream)

Has Private Stream 1 (MPEG-2 Program Stream)

Has Private Stream 2 (MPEG-2 Program Stream)

Has Padding Stream (MPEG-2 Program Stream)

Packet size (MPEG-2 Transport Stream)

Has DVB Closed Caption Information (MPEG-2 Transport Stream)

Has DVB Teletext Information (MPEG-2 Transport Stream)

Operational Parameter (MXF)

Cerify Automated Video Content Veriﬁcation System User Manual 75

Reference Video Templates

Check Description

Quick Check (continued)

Video Templates:

Play time

Frame rate

Bitrate

Data partitioning (MPEG-4, H.264)

AC Prediction (MPEG-4)

Forward Prediction (VC1 and MPEG-4)

Bidirectional Prediction (VC1 and MPEG-4)

Loop Filter (VC1)

First GOP closed

GOP interval

All quality tests:

Black fra

Freeze frame

Loss of Chroma

Letterb

Pillarbox

Blockiness

Luma Li

RGB Component Violation

Quantization

mes

mit Violation

Audio Templates:

Play time

Bitrate

All quality tests:

nce

Sile

Mute

Peak level maximum

level minimum

Peak

Clipping

Test tone

76 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Video Templates

Check Description

Alert limit

Individual Alert limit

Field Ord

This rule can b however the value can be set to a maximum of 10,000.

Selecting the "Terminate processing if limit is exceeded" checkbox causes ﬁ le processing to stop if the alert limit is (such as length of stream) are not reported. Similarly, end of stream test cases will not be executed. If the checkbox is not cleared, proces sing will proceed to completion but any further video alerts will be suppressed a raised. If the alert limit has been exceeded, fa tal alerts will still be displayed.

Note that the Individual Alert limit canbeusedtopreventtheresults being swamped by a particular video alert

This rule ca being swamped by a particular video alert. It is not possible to turn off this check; however, the value can be set to a maximum of 10,000. This value should be kept lower than the Alert limit value, since the latter

This rule is consistent with a given ﬁeld order.

Top ﬁeld ﬁrst will check that the coded stream is ﬂagged as such and that the bottom ﬁeld does

not appear to be from an earlier point in time than the top ﬁeld.

Bottom ﬁeld ﬁrst for the opposite of Top ﬁeld ﬁrst.

e used to limit the number of video alerts raised. It is not possible to turn off this check;

exceeded. In this case, certain stream properties that require the whole ﬁle to be processed

nd not shown. In either case, an alert will be raised, indicating that further alerts will not be

n be used to limit the number of video alerts with the same ID. This prevents the results

takes precedence.

checks that the ﬁeld dominance indicated by the coded stream and the decoded video

Consistent with stream ﬂags checks that the decoded video ﬁeld o rder is the same as the ﬁeld

dicated by the coded stream.

order in

In the case where pulldown is achieved through the use of stream ﬂags, or any stream where the coded ﬁeld order is expected to change, Consistent with stream ﬂags is the only appropriate check to use.

eams that have already had pulldown applied in the source video (so that the coded ﬁeld order is

For str constant), any of these three checks may be suitable.

lace

Inter

ime

Play t

Encoded

ure Size

Pict

Color depth Tests the color depth (bits per sample) of the decoded video. This is usually 8, but may be higher in

Frame rate

This check will either require or prohibit interlaced coding (not available for H.263).

Used to check the play time of the video elementary stream. Deﬁned as the presentation time of the last video frame in display order.

iple sets

Mult

s the video resolution (frame width by frame height) in pixels. The size reported is used to encode

Test the picture. For some codecs, this size may be different to the intended display size of the picture. Frame width is deﬁned as the coded video frame width reported by the ﬁrst stream header only. Frame

ght is deﬁned as the coded video frame height reported by the ﬁrst stream header only. For interlaced

hei video, encoded picture size is the height of the reconstructed frame (twice the ﬁeld height).

Multiple sets

me standards (not available for H.263, MPEG-2 or DV25).

ests the average frame rate (calculated as <frames- 1>/<duration>) of the video sequence. This check

T does not use any declared frame rate in the stream header.

Multiple sets

(see page 69) of valid values can be deﬁ ned for this rule.

Cerify Automated Video Content Veriﬁcation System User Manual 77

Reference Video Templates

Check Description

Bit rate

Tests the aver

age bit rate of the video elementary stream, calculated as <stream_size>/<duration>.

This check does not apply buffer analysis rules.

Display Aspect Ratio

Multiple sets

Tests the aspect ratio of the intended display dimensions of the video stream. According to the codec being used, t

(see page 69) of valid values can be deﬁned for this rule.

his depends upon a combination of the indicated display aspect ratio in the stream, the indicated pixel aspect ratio, and the frame size (in pixels). Consequently, this will not necessarily correspond to the actual resulting aspect ratio on all display devices. The mechanism used for detecting the MPEG-2 d

isplay aspect ratio is documented in more detail in the section Video Checks Speciﬁc

to MPEG-2 Standard (see page 81).

Multiple sets

xxx

(see page 69) of valid values can be deﬁned for this rule.

Video Quality

For interlaced content, all quality checks consider each frame to contain the top ﬁeld and the bottom ﬁeld in a single picture. It is not possible to apply these checks on each ﬁeld.

Check Description

Black frames at start, end, or during video

Freeze frame sequence

Loss of Chroma This check ensures that the video has color information. It will cause an alert if the color signal is lost

These checks enforce or prohibit a certain duration of black at the beginning and end of the sequence, or to prohibit periods of black in the middle. The Black level tolerance ﬁeld determines what luma level is considered to be black by the test. If the Black level tolerance is N, then any pixels in the bottom N % of the signal range are considered to be black. An N value of 0% corresponds to a luma value of 16 and 100% corresponds to a luma value of 235. The Ignore failures for up to...% of picture area parameter allows a percentage of the screen area to exceed the threshold yet for the frame to still be considered black. This is typically used to disregard small amounts of analog noise and/or channel logos.

This check can detect a sequence of repeated frames. The Maximum allowed duration parameter gives the length of a frozen sequence above which an alert will be generated. Sequences of frozen frames equal to or shorter than this duration will not lead to an alert. For example: entering "2 identical frames" will allow two c onsecutive identical frames to pass, but will generate an alert if three consecutive identical frames are encountered.

The Ignore monochromatic frames option allows frames which are predominantly a single color (such as black) to be ignored and so not cause freeze frame alerts.

Frames are considered "repeated" if every 16x16 block of luma s amples differs by less than a given root mean square error from the corresponding block in a previous frame. The Frames differ at ...% or more of luma range parameter controls this sensitivity. If you are getting frozen frame alerts for sequences with signiﬁcant movement, lower this value. If frozen sequences are not leading to an alert being raised when you think they should, raise this value.

(if the chroma components of the decoded video fall to zero or nearly so). The Maximum allow ed duration parameter gives the maximum number of video frames or seconds that are permitted to be monochrome before an alert is triggered. The parameter Ignore failures for ﬁrst...at start allows the test to skip over a certain amount at the beginning of the video stream, without generating alerts. Similarly, the Ignore failures for last...at end parameter skips over a given amount at the end. These parameters are typically used to skip over monochrome title and credit sequences. The Chroma level tolerance percentage gives the signal level below which the check will trigger an alert. 0% will alert on Cr and Cb values of 128, while 100% will alert on any value from 16 to 240. The Ig no re failures for up to...% of picture area speciﬁes the amount of the picture area that may contain color information without causing the check to trigger an alert. These last two parameters are typically used to disregard small amounts of analog noise and/or channel logos.

78 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Video Templates

Check Description

Letterbox and Pillarbox checks

Blockiness

These checks e pillarboxing) altogether. If the Disallow Letterboxing or Disallow Pillarboxing check boxes are selected, the Desired Aspect Ratio parameters are ignored. In this case, no black bars are allowed at the top and bot check will calculate the correct sizes of the black bars for the given aspect ratio, and trigger an alert if the video does not comply. The parameter Ignore failures for ﬁrst...at start allowsthetesttoskipover a certain amo

failures for last...at e nd parameter skips over a given amount at the end. The Maximum allowed duration parameter gives the maximum number of video frames or seconds that are permitted to have

improper bl the luma level that the check regards as "black", with 0% corresponding to the value 16, and 100% corresponding to 235. This tolerance is typically used to disregard small amounts of analog noise in the otherw black bars, the Out-of-position tolerance parameter speciﬁes the number of scan lines (or pixel columns) by which a black bar may be out of place, without an alert being triggered. Two further parameter for skipping frames that are too dark to reliably detect the black bars. Once again, 0% corresponds to 16 and 100% corresponds to 235.

This is a subjective measure of video quality. Each frame is assigned a quality metric (based on compress of poor quality (such as fast camera pans) to be disregarded if required. An alert is generated if the video quality drops below the given threshold.

The imag on each frame. A rolling average is calculated for a sequence of frames, and if the rolling average for one or more of the four quadrants exceeds the user-speciﬁed threshold an alert is raised. The

ding" frame reported will be the last frame in the sequence of N.

"offen

Blockiness measurements will continue to be taken after an alert is raised, but another alert will not be raised until at least another N consecutively blocky frames have passed. So if you were averaging over 10 an alert at frame 10 and an alert at frame 20.

The blockiness score that is reported in an alert is the lowest of the four quadrants rolling average if

han one quadrant exceeds the threshold. The averaged score is rounded to the nearest integer.

more t

nforce a certain aspect ratio in the active picture area, or to prohibit letterboxing (or

tom of the frame (Letterboxing) or at the left and right sides (Pillarboxing). Otherwise, this

unt at the beginning of the video stream, without generating alerts. Similarly, the Ignore

ack bars, before an alert is triggered. The Black level tolerance parameter speciﬁes

ise black borders of the frame. To allow for small variations in the detected position of the

s, Black level tolerance and accounting for...% of picture area not black specify a rule

ion artifacts) in the range 0-99, and a moving average is calculated to allow for brief periods

e is divided into four quadrants and blockiness measurement is re corded for each quadrant

frames and your stream had contained a sequence of 22 blocky frames, you would expect

Cerify Automated Video Content Veriﬁcation System User Manual 79

Reference Video Templates

Check Description

Luma Limit Violation

RGB Component Violation

xxx

This tests tha Duration parameter gives the maximum number of video frames or seconds that are permitted to have violations before an alert is triggered. The Low Limit and High Limit ﬁelds allow for more strict or more lenient rules Tech Rec. R103-2000. These limits may be speciﬁed in mV, %, or 8 bit decimal values where values in mV or % are ﬁrst converted to 8 bit decimal. For example, the ranges 0-700mV and 0-100% are converted to Tolerance F ilter applies a low pass ﬁlter to the video before checking the limits to remove brief limit violations that are only a small amount over the limit. The default 50% ﬁlter setting complies with EBU Tech Rec. R1 brief violations, which cause small dots on the video image to be out-of-limit, are not a problem in practice. The lower the percentage entered here, the less likely a brief violation is to cause an alert. Values of 6 Apply tolerance ﬁlter check box is checked. The Ignore failure... ﬁeld allows an illegal signal for a given percentage of the screen area to not cause an alert. If the area of the screen in violation is greater than this p

This test given by ITU-R BT.601-5 or ITU-R BT.709-5. The Maximum duration parameter gives the maximum number of video frames or seconds that are permitted to have violations, before an alert is triggered. The Color If Auto is selected, then ITU-R BT.709-5 is used if the frame has more than 1000x648 pixels, otherwise, ITU-R BT.601-5 is used. The Low Limit and High Limit ﬁelds allow for more strict or more lenient rules for when R103-2000. These limits may be speciﬁed in mV, % or 8 bit decimal values where values in mV or % are ﬁrst converted to 8 bit decimal. For example, the ranges 0-700mV and 0-100% are converted to 16-235 Filter applies a low pass ﬁlter to the video before checking the limits to remove brief limit violations that are only a small amount over the limit. The default 50% ﬁlter setting complies with E BU Tech Rec. R103-2 violations, which cause small dots on the video image to be out-of-limit, are not a problem in practice. The lower the percentage entered here, the less likely a brief violation is to cause an alert. Values of 64 and tolerance ﬁlter check box is checked. The Ignore failure... ﬁeld allows an illegal signal for a given percentage of the screen area to not cause an alert. If the area of the screen in violation is greater than t

t the luma component (Y') of the Y'CbCr signal is within valid limits. The Maximum

for when a pixel is considered a violation. The defaults of -1% to 103% comply with EBU

16-235 decimal, similarly, -7-721 mV or -1%-103% = 14-242 decimal. The Out-of-Limits

03-2000 and IEEE Standard 205 for SD signals. This video standard recognizes that very

4 and above are not recommended. The Out-of-Limits Tolerance Filter is only applied if the

ercentage, an alert will be generated.

ensures that the Y', Cb and Cr components of the decoded video lie within the legal range

space Conversion allows for the selection of the method for conversion from Y'CbCr to RGB.

a pixel is considered a violation. The defaults of -35mV to 735mV comply with EBU Tech Rec.

decimal, similarly, -35-735mV or -5%-105% = 5-246 decimal. The Out-of-Limits Tolerance

000 and IEEE Standard 205 for SD signals. This video standard recognizes that very brief

above are not recommended. The Out-of-Limits Tolerance Filter is only applied if the Apply

his percentage, an alert will be generated.

Video Checks Speciﬁc to MPEG-4 Standard

Check Description

Proﬁle and level Checks whether the video conforms to the MPEG-4 Part 2 Pro ﬁle and Level speciﬁed by the user.

GOVHeader Tests whether a Group Of VOP (GOV) header exists anywhere in the stream. This test is based on

detecting the group_of_vop_start_code syntax element in the stream.

Visual object sequence header

Video object header

80 Cerify Automated Video Content Veriﬁcation System User Manual

Tests whether a VisualObjectSequence() header exists anywhere in the stream. This test is based on detecting the visual_object_sequence_start_code syntax element in the stream.

Tests whether a video_object_start_code is present in the stream.

Reference Video Templates

Check Description

AC prediction Tests whether

on detecting the ac_pred_ﬂag syntax element.

Forward prediction

Bidirectional

Tests whether the video sequence contains any frames that use forward motion prediction (P-VOPs, B-VOPs and S-VOPs).

Tests whether the video sequence contains any B-VOPS.

prediction

Quarter sample MV

4MV block

Tests whether quarter sample motion compensation is used, as determined by the quarter_sample element in the VideoObjectLayer() header.

Tests whet

modes

Global mo

tion

compensation

Data partitioning

Resync markers

Test s w he test whether GMC S-VOPs are actually ever used.

Tests the value of the data_partitioned element in the VideoObjectLayer() header. Macroblocks in Data partitioned streams have motion vectors coded separately from texture (DCT) information.

Tests for the presence of resync markers in coded VOPs, as determined by the resync_marker_disable element

RVLC Tests w

element in the VideoObjectLayer() header. Reversible VLCs give greater opportunity for error correction at the expense of slightly lower coding efﬁciency.

xxx

the video sequence contains any macroblocks that use AC Prediction. This test is based

her the inter4v macroblock type is ever used in a P-VOP.

ther the sprite_enable element in the VideoObjectLayer() header is set to GMC. This does not

in the VideoObjectLayer() header.

hether Reversible Variable Length Codes are in use, as determined by the reversible_vlc

Video Checks SpeciﬁctoMPEG-2Standard

Check Description

Standard This Template can be used to process both MPEG-2 and MPEG-1 video. If the video is MPEG-1 an alert

will be raised, and this can be suppressed by selecting the checkbox.

Cerify supports the decoding of MPEG-2 constrained bitstreams with Main proﬁle or 4:2:2 proﬁle. MPEG-1 constrained bitstreams are not fully supported and will be treated as MPEG-2 bitstreams. This can lead to various issues when processing MPEG-1 constrained bitstreams, typically including spurious alerts, but also possible picture corruption and failure to decode the stream. For a more complete description of the differences between MPEG-1 and MPEG-2 bitstreams please refer to section D.9 of the ITU-T H.262 or ISO/IEC 13818-2 speciﬁcation.

Since trying to process a video format which is not MPEG-1 or MPEG-2 will almost certainly lead to spurious alerts, Cerify will raise an alert and cease analysis imm ediately if the video is not either of these types.

Proﬁle Detects whether the stream conforms to the Main or 4:2:2 proﬁle.

Level

Display Aspect Ratio

Color Format Tests the c olor sub sampling of the decoded video.

Detects whether the stream conforms to the Main, High 1440 or High level, or to some level below the one speciﬁed by the user.

For MPEG-2 streams the system examines the aspect_ratio_information ﬁeld(seeTable6-3inISO/IEC 13818-2). If this value is 0010, 0011, or 0100 then this directly represents a Display Aspect Ratio and the corresponding value will be used to carry out the check. If the value is 0001 then the Sample Aspect Ratio is 1 and the Display Aspect ratio will be deduced from the frame height and width. Selecting the value "Unspeciﬁed" for this check, will check that the aspect_ratio_information ﬁeld has not been set to any of the above four values.

Cerify Automated Video Content Veriﬁcation System User Manual 81

Reference Video Templates

Check Description

Indicated bit rate

Test s t he v a lu the stream sequence header and used in VBV calculations.

Only one failure of this test will be reported for any single incorrect value.

Sequence display

Tests for the presence or absence of an MPEG-2 sequence_display_extension following every sequence header. Ever

extension

This test will check that an MPEG-2 copyright_extension structure occurs at least once in the stream, and (optionally) that its contents match the given values. The Identiﬁer and Copyright Number ﬁelds each accept

Every copyright_extension present in the stream is tested.

VBV buffer size Tests on the value of vbv_buffer_size given in the sequence header (and sequence extension for

MPEG-2). This is expressed in units of 16K (16384 bytes).

Only one f

First GOP closed

Checks th check that the ﬁrst GOP header occurs at the beginning of the stream; see the GOP Interval check.)

GOP interval Checks the frequency of GOP headers, expressed in terms of the number of pictures between

successive headers. For example, specifying min=2 and max=2 would require a GOP header on every o a GOP header.

CC standard Checks for the presence of closed caption standard data in the entire duration of the stream. You

can select one or a combination of the closed caption standards (CEA 608, CEA 708 and SCTE 20 SCTE 2

ent

CC abs

CEA 6 caption

Check

ks for the presence of closed caption services for CEA 608. You can select one or a combination of

Chec CEA 608 caption services, which are CC1, CC2, CC3, and CC4.

services

CEA 608 text

vices

ser

A 708

CE caption

Checks for the presence of text services for CEA 608. You can select one or a combination of CEA

text services, which are T1, T2, T3, and T4.

608

ecks for the presence of closed caption services for CEA 708. You can select one or a combination of

Ch CEA 708 caption services, which are Service 1, Service 2, Service 3, Service 4, Service 5, and Service 6.

services

SCTE 20 line

umber

CTE 21 line

Checks for line number where the SCTE 20 closed caption data is carried.

hecks for line number where the SCTE 21 closed caption data is carried.

number

Quantization This ensures that the quantizer_scale never exceeds the user supplied values for inter and intra blocks

for more than a given duration in seconds/frames. If the combined percentage of inter and intra blocks in a frame exceeding their threshold is greater than the percentage entered then that frame will fail the test. The quantizer scale can be any number in the range of 1 to 112.

xxx

e of the bit rate (in bits per second) indicated by the MPEG-2 bit_rate element, as given in

y sequence header is tested, but repeated failures are not shown.

values in decimal, or may be left empty if no check is to be performed.

ailure of this test will be reported for any single incorrect value.

at the ﬁrst GOP header encountered in the stream has closed_gop set to 1. (This does not

ther picture. It is also possible to check that the ﬁrst picture in the sequence is preceded by

1) for the Closed Caption Presence test.

s for the absence of closed caption data in the entire duration of the stream/ﬁle.

82 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Video Templates

Video Checks S

Check Description

Proﬁle Checks wheth

Sample aspec ratio

Range mapping

Loop ﬁlter Tests whether loop ﬁltering has been enabled for the sequence. For Advanced proﬁle, this value

Intensity compensation

Forward prediction

Bidirectional

tion

predic

Quantization This ensures that the quantizer scale (MQUANT) never exceeds the user supplied value for more than a

Dropp frames

xxx

peciﬁc to VC-1 Standard

er the video conforms to the Simple, Main or Advanced proﬁle.

Tests the sam intended horizontal distance between the columns and the intended vertical distance between the rows of the luma sample array in a frame.

Tests whether the video stream makes use of range mapping in Advanced proﬁle to scale luma and color-dif

This does not test range reduction (as used in Main proﬁle).

is tested at each entry point header.

Tests whether any pictures in the video stream use intensity compensation.

Tests whether the video sequence contains any frame types (for example, P pictures, B pictures) which us

Test s w bidirectional motion prediction.

given duration in seconds/frames. If the percentage of macroblocks in a frame exceeding the threshold

ater than the percentage entered then that frame will fail the test. The quantizer scale can be

is gre any number in the range of 1 to 31.

This test ensures that the time difference between frames never exceeds the user supplied duration in seconds/frames.

nputs speciﬁed in seconds, if the gap in presentation times for consecutive frames exceeds the

For i threshold then the later frame will fail the test.

For inputs speciﬁed in frames, the most recent frame timings are used to calculate the probable intended

me rate and a frame whose timing exceeds the frame threshold will fail the test. Setting a maximum

fra gap of one frame will give an alert for any dropped frames.

ple aspect ratio of the video stream. The sample aspect ratio is the ratio between the

ference values. Every entry point header is checked.

e forward motion prediction.

hether the video sequence contains any frame types (for example, B pictures) which use

Video Checks Speciﬁc to H.264/AVC Standard

Check Description

Proﬁle Checks whether the H.264/AVC level and proﬁle match or conform to those selected by the user.

AVC-Intra restrictions

Sample aspect ratio

Entropy coding

Data partitioning

xxx

Cerify Automated Video Content Veriﬁcation System User Manual 83

Enforces the AVC Intra restrictions as per the "SMPTE RP 2027-2007 AVC Intra-Frame Coding Speciﬁcation" standard.

Tests the sample aspect ratio of the video stream. The sample aspect ratio is the ratio between the intended horizontal distance between the columns and the intended vertical distance between the rows of the luma sample array in a frame.

Tests whether the entropy coding is CABAC (exclusively) or CAVLC (exclusively), as determined by the entropy_coding_mode ﬂag in the picture parameter set(s) of the video stream.

Data partitioning is used for error resilience. This rule can either check that data partitioning is used throughout the stream, or that it is never used at all.

Reference Video Templates

Video Checks S

Check Description

DV Proﬁle Checks wheth

Field Order This rule checks that the ﬁeld dominance indicated by the coded stream and the decoded video is

Standards body Checks that the ﬁle conforms to either the IEC (DV) or the S MP TE (DVCPRO) standards.

Closed

captio (Standard)

Closed captions (GVG

Line 1

xxx

peciﬁc to the DV50/100/DVCPro Standard

er the DV proﬁle (video system) matches or conforms to that selected by the user. The

Proﬁles show the number of lines and ﬁeld rate, color sampling, and video bit rate:

1. 525/60 4:1:1 25Mb/s

2. 625/50 4:1:1 25Mb/s

3. 625/50 4:2:0 25Mb/s

4. 525/60 4:2:2 50Mb/s

5. 625/50 4:2:2 50Mb/s

6. 1080/60i 4:2:2 100Mb/s

7. 1080/50i 4:2:2 100Mb/s

8. 720/60p 4:2:2 100Mb/s

9. 720/50p 4:2:2 100Mb/s

consistent with a “Bottom Field ﬁ rst” ﬁeld order.

Checks if closed caption data is present in the ﬁrst frame of the stream as deﬁned by the IEC DV

rd.

standa

Checks if alternate closed caption data is present in VAUX pack 38 throughout the stream as deﬁned by Grass Valley for Line 19 closed caption data. If closed captions are required, it can be speciﬁed

he closed caption data must not be null (four bytes of 0x80 in the closed caption pack) for more

that t than the supplied duration.

84 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Video Templates

Video Checks S

Check Description

Proﬁle Checks that the video stream is one of the following formats:

Display picture size

Alpha channel

xxx

peciﬁc to the ProRes Standard

Apple Prores 422

Apple Prores 422 (HQ)

Apple Prores 422 (LT)

Apple Prores 422 (Proxy)

Apple Prores 4444

Tests the video display resolution (frame width by frame height), in pixels. The display picture size is not necessarily the same as the encoded picture size.

Multiple sets of valid values can be deﬁned for this rule.

Checks for the presence of an encoded alpha channel. Cerify will ignore any Alpha channels when performing baseband checks.

Video Checks Speciﬁc to Generic QuickTime Video

The Generic QuickTime Video template uses the QuickTime Player to decode a video stream contained within a QuickTime MOV, MP4, or 3GPP container ﬁle. It does not support all of the container formats thataresupportedbyQuickTimePlayer,suchasAVI.CreatingaProﬁle using this template with a container template which is not "QuickTime" or "MP4 / 3GPP" results in an error. Unlike other video templates which are speciﬁc to a particular video codec, any video stream that can be decoded by QuickTime Player can be decoded using this template. Additional video codec capability may be acquired by installing an appropriate third-party plug-in for QuickTime Player.

The stream properties returned when using this template are those reported by QuickTime, which in some circumstances might not be consistent with analogous information carried in the elementary stream.

Check Description

QuickTime This check causes the video stream to be decoded using the QuickTime framework rather than Cerify’s

internal video decoders. It also checks that the container format of the media ﬁle is QuickTime MOV, MP4, or 3GPP.

Standard This checks that the standard of the decoded video stream matches the entered value. If you are

unsure of the value to enter in this ﬁeld, process a candidate media ﬁle using a Generic QuickTime Video template without the standard rule enabled and with the QuickCheck rule enabled. The standard of the video stream will be reported in the Video Info of the job result. Use this value in the standard rule to ensure that all subsequent ﬁles are of the correct video standard.

Display picture size

Alpha channel

xxx

Tests the video display resolution (frame width by frame height), in pixels. The display picture size is not necessarily the same as the encoded picture size.

Multiple sets of valid values can be deﬁned for this rule.

Checks for the presence of an encoded alpha channel. Cerify will ignore any Alpha channels when performing baseband checks.

Cerify Automated Video Content Veriﬁcation System User Manual 85

Reference Audio Templates

NOTE. When using the Generic QuickTime Video template, it generally results in signiﬁcant performanc e gains over other video template types as it uses multi-core processors and no syntax checking.

For example, H.264 decoding is approximately ﬁve times faster.

Video Checks Speciﬁc to JPEG 2000

The JPEG 2000 Video template uses the QuickTime Player to decode JPEG 2000 video streams contained within a QuickTime MOV, MP4, or 3GPP container ﬁle. It does not support all of the container formats that are supported by QuickTime Player, such as AVI. Creating a Proﬁle using this template with a container template which is not "QuickTime" or "MP4 / 3GPP" results in an error. The stream properties returned when using this template are those reported by QuickTime, which in some circumstances might not be con

sistent with analogous information carried in the elementary stream.

Check Descript

QuickTi

Display p icture size

hannel

Alpha c

xxx

NOTE. When using the JPEG 2000 template, syntax checking is not supported.

Audio Templates

Audio Templates collect together rules applying to audio elementary streams.

ion

This che internal video decoders. It also checks that the container format of the media ﬁle is QuickTime MOV, MP4, or 3GPP.

Tests the video display resolution (frame width by frame height), in pixels. The display picture size is not nec for this rule.

Checks for the presence of an encoded alpha channel. Cerify will ignore any Alpha channels when performing baseband checks.

ck causes the video stream to be decoded using the QuickTime framework rather than Cerify’s

essarily the same as the encoded picture size. Multiple sets of valid values can be deﬁned

86 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Audio Templates

Common Audio C

Check Description

Standard Checks that t

Track

Syntax checks Enables strict testing for compliance to the detected standard. This will generate alerts for corrupted

ppress

Su Alerts

onﬁguration Checks

he input ﬁle is encoded to the expected standard. This check is mandatory and cannot

be disabled.

Because improper handling of an audio format ﬁle, such as processing PCM as AAC, will almost certainly le a mismatch between observed and expected audio format.

If the media ﬁle does not contain an audio stream, an alert will be raised and processing will terminate immediatel

You c an c ho

Track Index: Speciﬁes the index of the audio track that is to be processed. The index is relative to the natural ordering of the audio tracks within the container layer, such as PIDs for MPEG-2 Transport Streams. T the rule is not used, the ﬁrst audio stream found of the appropriate codec type is processed.

For example, for an MPEG-2 Transport stream containing two MPEG-1 Audio streams and one Dolby Digital s and in order to process the second MPEG-1 Audio stream, a track Index of 1 should be speciﬁed. To process the Dolby Digital stream, the rule is not required since there is only one Dolby Digital stream.

Track Id

depend on the id used to identify the audio track in the container. The following table gives the values used in the track id ﬁeld for different containers.

You c a can be in either decimal or hexadecimal format; hexadecimal indexes must be preceded by '0X'. You can use the following formats to specify multiple tracks:

streams, and streams generated by misconﬁgured or noncompliant encoders. Each type of syntax alert

s a numeric ID which is shown in the Alert Details page.

erts can be suppressed individually by entering the alert ID into the text ﬁeld titled Suppress alert IDs.

Al Note that fatal alerts can never be suppressed. Suppressed alerts will not count toward any of the alert limits set by the Alert limit or Individual Alert limit.

ad to spurious alerts, Cerify will raise an alert and cease analysis immediately in the event of

ose the track using either Track Index or Track Id (Identity).

he index only takes in to account the tracks using the codec of the current audio template. If

tream, in order to process the ﬁrst MPEG-1 Audio stream, a track index of 0 should be speciﬁed

: Speciﬁes the identity of the audio track that is to be processed. The track id value used will

MOV/MP4

MPEG-2 PS – Stream id of the audio track

MPEG-2 TS – PID of the audio track

MXF – Tr

ASF – Stream number of the audio track

GXF – Track ID of the audio track

a–b

a–b,c

a,b–c

a–b,

a,b,c,d

* (This applies to all the track in that standard)

–1 ( track id or track index is not selected)

/3GPP – Track ID of the audio track

ack ID of the audio track

n also specify multiple tracks to be processed in a s ingle template. Track indexes and Track Ids

c–d

Default track. The result of processing will be similar to the case where the rule for choosing

Cerify Automated Video Content Veriﬁcation System User Manual 87

Reference Audio Templates

Check Description

Alert limit

Individual Alert limit

Sample ra

Number of

channel

Play time

Bit ra

xxx

This rule limi the value can be set to a maximum of 10,000.

Clicking the "Terminate processing if limit is exceeded" checkbox causes ﬁle processing to stop if the alert limit is (such as length of stream) are not reported. Similarly, end of stream test cases will not be executed. If the checkbox is not selected, processing will proc eed to completion but any further audio alerts will be suppressed a have been suppressed. If the alert limit has been exceeded, fatal alerts will still be displayed.

Note that the Individual Alert limit can be used to prevent the results being swamped by a particular audio alert

This rule li swamped by a particular audio alert. It is not possible to switch off this check; however, the value can be set to a maximum of 10,000. This value should be kept lower than the Alert lim it value, since the latter

This test if you are expecting 48 kHz 2-channel audio then you need to enter 48000 here.

Multiple sets

This tests how many audio channels are present in the decoded audio elementary stream (the system o elementary streams in a transport stream (each with 2-channel audio), the system will only decode one of the three streams; therefore, this test will see only 2 channels.

Multip

This te

Multiple sets

Tests the average bit rate of the audio elementary stream, calculated as <stream_size>/<duration>.

Multiple sets

ts the number of audio alerts raised. It is not possible to switch off this check; however

exceeded. In this case certain stream properties that require the whole ﬁle to be processed

nd not shown to the user. In either case an alert will be raised indicating that further alerts

mits the number of audio alerts with the same ID number. This prevents the results being

takes precedence.

s the sample rate of decoded audio. It is independent of the number of channels, so for example

(see page 69) of valid values can be deﬁned for this rule.

nly decodes one audio elementary stream at a time). For example: even if there are 3 audio

le sets

(see page 69) of valid values can be deﬁned for this rule.

sts the length, in seconds, of the decoded audio stream.

(see page 69) of valid values can be deﬁned for this rule.

Audio Quality Checks

Check Description

Ignore alerts for null tracks

Silence at start, end, or during video

This rule is used to ignore the audio quality alerts when there is no data in the track.

These checks require or disallow a period of silence at the beginning and end of the audio sequence, or to disallow periods of silence in the middle. Silence detection can be enabled or disabled on a per-channel basis. No alerts will be raised if silence detection is requested for a channel that does not exist (the "number of channels" test can be used in conjunction if necessary to detect missing channels). Cerify analyzes the decoded audio stream for a given channel and tests each sample, deciding whether or not the sample is silent. Cerify considers a sample to be silent if:

The sample value differs from the previous sample by less than 0.5% of the sample range

The sample value difference from the last non-silent sample by less than 0.5% of the sample range

88 Cerify Automated Video Content Veriﬁcation System User Manual

Reference Audio Templates

Check Description

Mute at start, end, or during video

Peak level maximum

Peak level minimum

Clippin

ne at

Test to start and end

These checks e the sequence, or to prohibit periods of muted audio in the middle. Mute detection can be enabled or disabled on a per-channel basis. No alerts will be raised if mute detection is requested for a channel that does not e considered muted if its value is zero. Duration may be expressed in seconds, v ideo frames or audio frames. The latter will only be useful if the duration of an audio frame is known beforehand.

This test ensures that the peak level in the stream does not exceed a given maximum level. The level may be expressed in linear terms (from 0.0 to 1.0) or in dBFS (decibels full scale: any negative value, where 0.0 re a per-channel basis.

Alerts generated by this test represent instantaneous violations, so their start and end times are the same.

Thistestcanbeconﬁgured as either “Peak Level” test or “True Peak Level” test. When “True Peak Level” test is selected, the input stream is over-sampled appropriately (depending on the sampling rate), bef

This test ensures that the peak level in the stream reaches a given minimum level. The level may be expres where 0.0 represents the maximum sample value). Peak level tests can be enabled or disabled on a per-channel basis.

This test

This tes but non-silent. This deﬁnition permits the detection of clipping at non-peak values (which is possible if the audio has been processed since the original clipping occurred). This test can be conﬁgured to

occasional clips; a threshold frequency must be given, below which a lerts w ill not be generated.

ignore Clipping tests can be enabled or disabled on a per-channel basis.

These checks enforce or prohibit a period of a single frequency tone at the beginning and end of the sequence. Test tone checks can be enabled or disabled on a per-channel basis. If the test is

biting a test tone, then the duration ﬁeld speciﬁes a maximum duration (this will typically be 0).

prohi If the test is enforcing a test tone, then the duration is a minimum length. Duration can be expressed in seconds, video frames or audio frames. The latter will only be useful if the duration of an audio

is known beforehand.

frame

nforce or prohibit a certain period of digital audio muting at the beginning and end of

xist (use in conjunction with the "number of channels" test if necessary). A sample is

presents the maximum sample value). Peak level tests can be enabled or disabled on

ore testing it for peak.

sed in linear terms (from 0.0 to 1.0) or in dBFS (decibels full scale: any negative value,

canbeconﬁgured as either “Peak Level” test or “True Peak Level” test.

t detects audio clipping, as deﬁned by a run of successive samples whose value is very similar

Cerify Automated Video Content Veriﬁcation System User Manual 89

Reference Audio Templates

Check Description

Long Loudness

Long loudness The average is computed for each audio sample in the stream. This test measures the long audio loudness in the stream according to ITU-R BS.1770 standard and ensures that the long loudness level in the st levels are expressed in LKFS units (Loudness, K weighted, relative to nominal scale). The range for both maximum and minimum threshold levels is from -60 LKFS to 0 LK FS. Loudness is measured and averaged ove with the start and end times. Sometimes the alerts might represent instantaneous violations, so their start and end times are same.

Multiple se rule, you can deﬁne different minimum and maximum threshold levels for different group of channels. (See also Multiple Sets of Values

Short Loudness Short loudness is a moving window average loudness for the user selected channels. The average

is compute moving window duration is user conﬁgurable. This test measures the short audio loudness in the stream and ensures that the short loudness level in the stream does not go beyond given minimum and maximum l to nominal scale). The range for both maximum and minimum threshold levels is from -60 LKFS to 0 LKFS. The range for moving window duration is 0.5 seconds to 30 seconds. Alerts generated by this test repr instantaneous violations, so their start and end times are same.

Multiple sets of valid values can be deﬁned for this rule. By deﬁning multiple sets of values for this rule, you can d

Multiple Sets of Values

xxx

is a running average loudness for the user selected channels over the entire stream.

ream does not go beyond given minimum and maximum threshold levels. The loudness

r the selected channels. Alerts generated by this test represent periods of violations,

ts of valid values can be deﬁned for this r ule. By deﬁning multiple sets of values for this

(see page 69).)

d for all audio samples in the moving window, according to ITU-R BS.1770 standard. The

evels. The loudness levels are expressed in LKFS units (Loudness, K weighted, relative

esent periods of violations, with the start and end times. Sometimes the alerts might represent

eﬁne different threshold levels and window duration for different group of channels. (See also

(see page 69).)

Audio C hecks SpeciﬁctoMPEG1andMPEG-2AudioStandards

Check Description

Standard A single Template is used to check MPEG-1 and MPEG-2 part 3 standard audio streams since they

are so closely related. If the user needs to explicitly check that the audio stream conforms to just one of these standard, this check can be used.

Since trying to process an audio format that is not MPEG-1 or MPEG-2 will almost certainly lead to spurious alerts, Cerify will raise an alert and cease analysis immediately if the audio is not either of these types.

If the media ﬁle does not contain an audio stream, an alert will be raised and processing will terminate immediately.

Layer Used to check whether this is a Layer I or Layer II audio stream.

Error protection

Stereo Coding This tests that a given stereo coding mode is (or is not) used in the ﬁrst audio frame header.

Variable bit rate

xxx

This tests for the presence or absence of error protection. This corresponds to the protection_bit element in the ﬁrst audio frame header.

This tests whether the value of the bit_rate_index element ever varies over the course of the stream.

90 Cerify Automated Video Content Veriﬁcation System User Manual

Tektronix Cerify CYSW User manual

Specifications and Main Features

Frequently Asked Questions

User Manual