VBrick Systems VB4000, VB6000, VB5000 User Manual

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VB4000-5000-6000 Series

Network Video Appliances

VBrick v4.1 MPEG-2 Appliance

Admin Guide

August 21, 2007

4410-0216-0000

Copyright

© 2007 VBrick Systems, Inc. All rights reserved. 12 Beaumont Road

Wallingford, Connecticut 06492, USA www.VBrick.com

This publication contains confidential, proprietary, and trade secret information. No part of this document may be copied, photocopied, reproduced, translated, or reduced to any machine-readable or electronic format without prior written permission from VBrick. Information in this document is subject to change without notice and VBrick Systems assumes no responsibility or liability for any errors or inaccuracies. VBrick, VBrick Systems, the VBrick logo, StreamPlayer, and StreamPlayer Plus are trademarks or registered trademarks in the United States and other countries. Windows Media is a trademarked name of Microsoft Corporation in the United States and other countries. All other products or services mentioned in this document are identified by the trademarks, service marks, or product names as designated by the companies who market those products. Inquiries should be made directly to those companies. This document may also have links to third-party web pages that are beyond the control of VBrick. Use these links at your own risk. The use of such links does not imply that VBrick endorses or recommends the content of any third-party web pages. VBrick acknowledges the use of third-party open source software and licenses in some VBrick products. This freely available source code is posted at http:// www.vbrick.com/opensource.

FCC Notice

This equipment carries the CE mark and is UL listed in the U.S. and Canada. This equipment has been tested and found to comply with the limits for Class A digital device, pursuant to Part 15 of the FCC rules, Class A for the SDI Interface. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense. This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numerique de la Classe A respecte toutes les exigences do reglement dur le materiel brouilleur du Canada.

About VBrick Systems

Founded in 1997, VBrick Systems, an ISO 9001 certified vendor, is a privately held company that has enjoyed rapid growth by helping our customers successfully introduce mission critical video applications across their enterprise networks. Since our founding, VBrick has been setting the standard for quality, performance and innovation in the delivery of live and stored video over IP networks—LANs, WANs and the Internet. With thousands of video appliances installed world-wide, VBrick is the recognized leader in reliable, high-performance, easy-to-use networked video solutions.

VBrick is an active participant in the development of industry standards and continues to play an influential role in the Internet Streaming Media Alliance (ISMA), the MPEG Industry Forum, and Internet2. In 1998 VBrick invented and shipped the world's first MPEG Video Network Appliance designed to provide affordable DVDquality video across the network. Since then, VBrick's video solutions have grown to include Video on Demand, Management, Security and Access Control, Scheduling, and Rich Media Integration. VBrick solutions are successfully supporting a broad variety of applications including distance learning and training, conferencing and remote office communications, security, process monitoring, traffic monitoring, business and news feeds to the desktop, webcasting, corporate communications, collaboration, command and control, and telemedicine. VBrick serves customers in education, government, healthcare, and financial services markets among others.

Contents

MPEG-2 Admin Guide

Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Font Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x Printer-Friendly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

1. Introduction

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

VBSSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Mixed Model Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Archiver and Recorder Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. MPEG-2 Configuration

MPEG-2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Optimizing MPEG-2 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 MPEG-2 Configuration Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Configuration: Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Configuration: Network > Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Configuration: Network > Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Configuration: Network > Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Configuration: Network > IPv6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Configuration: Billboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Using the Billboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Billboard FTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Billboard URLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Billboard File Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Creating a Billboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Configuration: Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Configuration: Decoder > Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Configuration: Decoder > Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Configuration: Decoder > Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Configuration: Decoder > Picture-In-Picture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Configuration: Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Configuration: Encoder > Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Configuration: Encoder > Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Configuration: Encoder > Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Configuration: Encoder > Destination 1/Destination2 . . . . . . . . . . . . . . . . . . . . . . . . . 31 Configuration: Encoder > Announce (SAP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Configuration: Encoder > Text Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Configuration: Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Configuration: Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Configuration: FTP File Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

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Configuration: Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuration: Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Configuration: Passthrough > COM1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Configuration: Passthrough > COM2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Configuration: System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Configuration: System > General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Configuration: System > SNMP Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Configuration: System > Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Configuration: System > Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Configuration: Video On Demand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Configuration: Script Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Configuration: Script Management > Event Triggering . . . . . . . . . . . . . . . . . . . . . . . . . 52

Configuration: Script Management > Auto Configuration . . . . . . . . . . . . . . . . . . . . . . . 55

3. SDI Configuration

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Configuration: Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Configuration: Encoder > Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Configuration: Encoder > Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Configuration: Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

4. Status

Status: System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Status: Network Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Status: Network Status > Codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Status: Network Status > Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Status: Network Status > Network Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Status: Network Status > IPv6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Status: Decoder Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

MPEG-2 Decoder Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Status: Encoder Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

MPEG-2 Encoder Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Status: Hard Drive Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Status: Hard Drive Status > General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Status: Hard Drive Status > Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Status: Hard Drive Status > Recorder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Status: FTP Server Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Status: System Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Status: System Log > Config. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Status: System Log > System Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Status: System Log > Traps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Status: System Log > System Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Status: User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Status: User Information > Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Status: User Information > Slot1/Slot2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

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Contents

5. Diagnostics

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

User Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Diagnostics: Network Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Diagnostics: Network Tests > Ping Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Diagnostics: Network Tests > Trace Route Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Diagnostics: Network Tests > Data Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Diagnostics: Device Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Diagnostics: Decoder Color Bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Diagnostics: Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

6. Maintenance

Maintenance: Device Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Maintenance: Default All Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Maintenance: Read/Write Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Maintenance: Read/Write > Read From Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Maintenance: Read/Write > Write To Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Maintenance: Change Usernames & Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Maintenance: Usernames & Passwords > Change Usernames & Passwords . . . . . . . . . 91 Maintenance: Usernames & Passwords > Change SNMPv3 Passwords . . . . . . . . . . . . . 93

7. Maintenance Mode

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Maintenance Mode Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Maintenance Mode Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Maintenance Mode CLI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

8. VBStar

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Recording vs. Archiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

VBStar Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Configuration: Pump > General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Configuration: Pump > Destination 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Configuration: Pump > Announce (SAP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Configuration: Pump > Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

VBStar Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Using Mixed Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Filename Syntax Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Recording Batch Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Batch Wrap Point and Record Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Configuration: Recorder > General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Configuration: Recorder > Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Configuration: Recorder > Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

VBStar FTP File Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Configuration: FTP File Transfer > Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

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Configuration: FTP File Transfer > Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

VBStar Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Index

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Contents

MPEG-2 Admin Guide

This VBrick MPEG-2 Admin Guide is written for anyone who will be using or configuring a VB6000 Series MPEG-2 VBrick appliance. This includes system administrators, network technicians, and anyone who will be using or configuring a VBrick network video appliance. VBrick encoder and decoder appliances are available in industry standard MPEG-2, MPEG- 4, and other formats. MPEG-2 appliances are used for delivering low delay, DVD quality video over high bandwidth networks. MPEG-4 appliances are used for delivering low delay television quality video over low and medium bandwidth networks. These products are available in one and two channel configurations, as well as a combination encoder/decoder that delivers two-way interactive video (MPEG-2 and MPEG-4). An optional hard drive allows the video to be recorded at the source.

Organization

Introduction

Explains the basics. Provides general configuration

 

recommendations as well as how to cable the appliance and

 

connect it to the network.

 

 

MPEG-2 Configuration

Explains how to configure MPEG-2 video appliances using the

 

IWS web interface.

 

 

SDI Configuration

Explains how to configure Serial Digital Interface video

 

appliances using the IWS web interface.

 

 

Status

Explains all of the detailed status information available about

 

the network, the encoder, the decoder, the hard drive, etc.

 

 

Diagnostics

Explains how to run a variety of onboard diagnostics including

 

ping, traceroute, and decoder color bars.

 

 

Maintenance

Explains how to use various maintenance functions. These

 

reading and saving all configuration parameters and changing

 

user names and passwords.

 

 

Maintenance Mode

Explains maintenance mode and how it is used to recover if

 

errors occur during of after a firmware download.

 

 

VBStar

Explains how to use this MPEG-2 appliance with a hard drive

 

to record and pump high-quality video throughout your

 

network.

 

 

Getting Help

If you need help, or more information about any topic, use the online help system. The online help is cross-referenced and searchable and can usually find the information in a few seconds. Use the tree controls in the left pane to open documents and the up and down arrows to page through them. Use the Search box to find specific information. Simply enter one or more words in the box and press Enter. The search results will return pages that have all of the words you entered—highlighted in yellow (Internet Explorer only). The Search box is not case-sensitive and does not recognize articles (a, an, the), operators (+ and – ), or quotation marks. You can narrow the search by adding words.

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If you can't find the information you need from the online help, or from your certified VBrick reseller, you can contact VBrick Support Services on the web. Support Services can usually answer your technical questions in 24 business hours or less. Also note that our publications team is committed to accurate and reliable documentation and we appreciate your feedback. If you find errors or omissions in any of our documents, please send e-mail to documentation@vbrick.com and let us know. For more information about any VBrick products, all of our product documentation is available on the web. Go to www.vbrick.com/ documentation to search or download VBrick product documentation.

Font Conventions

Arial bold is used to describe dialog boxes and menu choices, for example: Start > All

Programs > VBrick

Green Courier fixed-width font is used for code elements (C++, HTML) as well as filenames, directories, etc.

Black Courier fixed-width font is used to indicate user input in keyboard commands, scripts, etc.

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VBrick MPEG-2 Appliance Admin Guide

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Preface

Chapter 1

Introduction

Topics in this chapter

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

VBSSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Mixed Model Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Overview

Congratulations on your purchase of VBrick System's MPEG-2 video networking product. VBrick Systems provides high-quality video and audio encoders and decoders. VBrick also provides software decoding on any PC through StreamPlayer or StreamPlayer Plus software. The result is video that can be obtained from any source—whether a live camera feed, DVD or VCR—and sent over a network (or LAN). This video can then be decoded by a hardware appliance or Set Top Box and displayed on a television monitor, or it can be decoded through StreamPlayer Plus software and displayed on any PC connected to the same network. The VBrick appliance is based on a modular platform that allows a variety of models consisting of MPEG-2 and MPEG-4 compression algorithms along with optional network interfaces (such as SDI and hard drive for storage). This user guide is intended to cover all models and provide instructions on initial setup and advanced parameter configuration.

Note The VBrick appliance consists of different hardware versions, distinguished by the last digit of the part number -xxx0 or -xxx1/-xxx2 (see Status: User Information > Main Board). When the part number is –xxx1/-xxx2 there can also be differences based on the PLX EEProm revision 1 or 2-and-higher (see Status: Encoder Status or Status: Decoder Status). Where differences occur, they are noted in the text.

VBSSM

VBrick Security and Surveillance Monitoring devices are video only—no audio. The VBSSMMP2 (MPEG-2) and VBSSM-MP4 (MPEG-4) encoders are ideal for security and surveillance applications where full motion, high-quality video is required in a cost effective product. The VBSSM is a compact, rugged and reliable video network appliance that supports temperature ranges from -20 to 70°C. The VBSSM encoder accepts NTSC/PAL video, compresses it in realtime and transmits the video digitally over an IP network. The video is then displayed on TV monitors using numerous MPEG decoders, Set Top Boxes or on PCs through desktop decoder software such as VBrick's StreamPlayer. VBSSM devices provide the following features:

Full motion, high resolution DVD quality video.

IP Unicast or Multicast for streaming applications.

Integral web server for configuration and management.

Low delay encoding for end-to-end camera control - pan, tilt and zoom.

Utilizes Layer III QoS – Diff Serv for prioritizing video over IP networks.

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Video encoding rates configurable from 8 Kbps to 15 Mbps.

Transport and Elementary stream support.

Provides closed captioning with text insertion.

Optional – video camera with pan, tilt and zoom.

Optional – 19 in. rack mount adapter (holds two across).

Table 1. VBSSM Models †

Model

Configuration

Description

 

 

 

9170-4200-000x

VBSSM-MP2

Ruggedized single channel MPEG-2 encoder.

 

 

 

9171-4200-000x

VBSSM-MP4

Ruggedized single channel MPEG-4 encoder with

 

 

audio. Same enclosure as VBSSM-MP2.

 

 

 

9172-4400-000x

VBSSM-MP2/4

MPEG-2 or MPEG-4. This device has a different

 

 

enclosure with a single video input that supports

 

 

two channels. It also supports RS-422 passthrough.

 

 

VBSSM-MP2 does not.

 

 

 

9174-4200-000x

VBSSM-MP4

No audio.

 

 

 

9175-4200-000x

VBSSM-MP4

With audio.

 

 

 

† See the VBrick Appliance Getting Started Guide for VBSSM rear panel drawings.

Mixed Model Appliances

In addition to dual devices (for example two encoders, or an MPEG-2 encoder and MPEG-2 decoder), VBrick supports mixed model appliances (for example a WM encoder and an MPEG-4 encoder). VBrick appliance v4.1 software supports almost any combination of VBrick devices in Slots 1 and 2 so you can mix and match as necessary. For example, you can have a WM encoder in Slot1 and an MPEG-4 encoder in Slot2, or you can have an MPEG-2 encoder in Slot1 and MPEG-4 decoder in Slot2. The only exception is that you cannot have a WM encoder and an MPEG-4 decoder in the same appliance. In general, encoders are installed in Slot1; decoders are installed in Slot2. WM encoders, if present, are always installed in Slot1.

Note VBrick WM, MPEG-2, and MPEG-4 appliances all run the same codebase. The configurable options and user interface vary according to the type of appliance (e.g. MPEG-2, MPEG-4, etc.) on which the code is installed.

Archiver and Recorder Functionality

Archiver/Recorder functionality may be different in mixed model appliances depending on how the slots are populated. In other words, the behavior of the device in a given slot may change depending on what combination of appliances are installed. See Figure 1 below and note the following distinctions:

An archiver only records from an associated encoder. For example, a WM Archiver is associated with a specific WM encoder.

A recorder is not associated with any encoder. It independently records one stream at a time from an encoder, a decoder, or from the network.

On MPEG-4 appliances, there is no archiving or recording.

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Introduction

Figure 1. Archiver/Recorder Functionality

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© 2007 VBrick Systems, Inc.

Chapter 2

MPEG-2 Configuration

Topics in this chapter

MPEG-2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Configuration: Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Configuration: Billboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Configuration: Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Configuration: Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Configuration: Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuration: Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuration: FTP File Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuration: Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuration: Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Configuration: System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Configuration: Video On Demand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Configuration: Script Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

MPEG-2 Overview

The basic VBrick MPEG-2 appliance consists of one or more of the following components. Note that the screens you see in IWS will vary depending on the model and how the appliance is configured.

1.A main controller card with the following:

10/100Base-T Ethernet network interface.

Two slots for encoder and/or decoder boards.

2.Optional Interfaces:

MPEG-2 encoder.

SDI Serial Digital interface for encoders and decoders.

Text insertion module.

MPEG-4 encoder.

MPEG-4 decoder.

WM Encoder.

VBStar which includes a hard drive and FTP.

Note VBrick appliances have a number of optional hardware accessories, including the AudioMate microphone, Remote Control devices, and cameras. These work directly with VBrick appliances or through the use of ActiveX control software, also available from VBrick.

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Table 2. IWS Configurable Options

Option

Applicable Model

 

 

Network

All VBrick models.

 

Ethernet.

 

 

Billboard

Only on models which have decoders.

 

 

Decoder

Single or dual:

 

Ethernet MPEG-2.

 

Ethernet MPEG-4.

 

• SDI MPEG-2 (see SDI Configuration).

 

 

Encoder

Single or dual:

 

Ethernet MPEG-2.

 

• SDI MPEG-2 (see SDI Configuration).

 

Text insertion.

 

 

Pump

VBStar models only (see VBStar).

 

 

Recorder

VBStar models only (see VBStar).

 

 

FTP File Transfer

VBStar models only (see VBStar).

 

 

Conferencing

Encoder and decoder combination models only.

 

 

Passthrough

All VBrick models.

 

 

System

All VBrick models.

 

 

Video on Demand

Decoder models only.

 

 

Script Management

All VBrick models.

 

 

 

Optimizing MPEG-2 Performance

VBrick appliances are designed to accommodate a variety of configurations. Options such as Hard Disk record and playback, and FTP file serving capability are fully meshed together, supporting a diverse set of applications. VBrick unit's configuration choices enable the widest range of features and capabilities and are designed to provide the user with a high degree of flexibility. In some extreme cases, users can create configurations that exceed the normal processing capacity of the unit causing it to not perform optimally. VBrick units provide statistical counters and status variables indicating current device utilization and can even be configured to report SNMP trap alarm conditions when these situations occur. Corrective action usually involves the reduction of a video rate or disabling a channel, easily performed via the IWS or CLI user interface. Under abnormal operating conditions, VBrick units provide total system protection against any integral damage and guarantee management connectivity via IWS or CLI.

In general, MPEG-2 video quality improves when video rate is increased. Significant video quality improvements are noticeable when moving between 1.2 and 5 megabits per second video rates. The video quality improvement becomes less noticeable when moving from medium rates to higher video rates (from 5–9 Mbps.) with most of the improvement occurring only during high motion video scenes. In essence, video quality is very subjective and relates to other components such as the response of the human eye, the quality and

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MPEG-2 Configuration

original content and signal, and the quality of the decoder and monitor. As a general rule, use the lowest video rate that best suits the application.

The following information represents guidelines for product configuration limitations, with regard to specific unit types. When configuring VBrick units, close attention must be paid to the total transport rate of all sources both entering and exiting the unit. In most cases the sum of all entering and exiting MPEG-2 data traffic should be closely monitored and kept to a minimum whenever possible. Once a configuration is decided upon and applied to the unit, the user can check the status of processor and device load via the IWS or CLI. The CPU utilization and overloaded status variables are an excellent indication on the overall unit's health. If the CPU utilization is high or the overloaded condition is occurring, the user may simply reduce video transport rates and re-run the test. As a part of regular maintenance, users should periodically check the CPU utilization, overloaded and buffer full count status variables to ensure the unit remains within its operating limits.

MPEG-2 Configuration Recommendations

Maintain video rates at optimum levels. High rates do improve quality. VBrick recommends rates that use the lowest possible rate which gives acceptable quality. For MPEG-2, rates between 5 and 7 MBPS exhibit excellent video quality.

Avoid setting the transport rate manually. Use the automatic transport rate calculation mode (default operation).

The maximum MPEG-2 transport rate of 17 megabits per second should be used judiciously.

When using the hard drive, especially for recording, keep other device functions to a minimum to avoid discontinuities in the recorded content.

Recording high video rate streams consumes hard drive space and limits the recording duration significantly. Additionally, high video rate streams require faster hard drive access times and are more prone to video dropouts.

Periodic re-formatting of the hard drive will improve overall disk performance by reducing disk fragmentation, much like a computer behaves.

Hard drive pump and record functions are designed to be mutually exclusive. When operating at medium to low rates it may be possible for the hard drive to pump and record simultaneously but it is not recommended.

Encoding from and sending to multiple destinations consumes additional system resources. Furthermore, a 4300 VBrick unit with dual encoders is capable of sending 4 streams but will not be able to sustain operation at the highest transport rates.

Increasing the IP video packet size improves overall performance both in Ethernet Mode. Please check with your network administrator first before deciding on what size is best for your network.

Absolute Maximum Transport Rates

This table provides the absolute maximum transport rates for given configurations.

Table 3. Maximum Transport Rate by Configuration

Model

Dest1, Dest2

Decoder

Recorder

FTP Active

Player /

 

Slot #1

Slot#2

 

 

Pump

 

 

 

 

 

 

6200

17,0

17

0

No

0

 

 

 

 

 

 

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Model

Dest1, Dest2

Decoder

Recorder

FTP Active

Player /

 

Slot #1

Slot#2

 

 

Pump

 

 

 

 

 

 

6200

15,15

15

0

No

0

 

 

 

 

 

 

6200

13,0

13

13

No

0

 

 

 

 

 

 

6200

12,0

12

12

Yes

0

 

 

 

 

 

 

6200

11,0

11

0

No

11

 

 

 

 

 

 

6200

9,0

9

0

Yes

9

 

 

 

 

 

 

6200

11,11

11

11

No

0

 

 

 

 

 

 

6200

10,10

10

0

No

10

 

 

 

 

 

 

4300

17,0

17,0

0

No

0

 

 

 

 

 

 

4300

11,11

11,11

0

No

0

 

 

 

 

 

 

4300

13,0

13,0

13

No

0

 

 

 

 

 

 

4300

11,0

11,0

0

No

11

 

 

 

 

 

 

4300

9,9

9,9

9

No

0

 

 

 

 

 

 

4300

8,8

8,8

0

No

8

 

 

 

 

 

 

5300

17

17

0

No

0

 

 

 

 

 

 

5300

13

13

13

No

0

 

 

 

 

 

 

5300

14

14

0

No

14

 

 

 

 

 

 

Note All values are shown in Mbps. A rate of 0 indicates "off" condition. Configurations other than the above may operate at higher rates than indicated. IWS operation may become sluggish due to its lower system priority.

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MPEG-2 Configuration

Configuration: Network

Configuration: Network > Ethernet

Network DHCP

Dynamic Host Configuration Protocol – (Enable, Disable). On

 

Ethernet models, if DHCP is enabled, the VBrick gets its IP

 

Address or Network Timer Server and Subnet Mask from the

 

DHCP server. If the DHCP server supplies the Gateway Address

 

or DNS server address, these parameters will replace the user

 

entered Gateway and DNS Time Server settings. If DHCP is

 

enabled and the VBrick cannot obtain an IP address from the

 

server, the VBrick will start in limited run mode after two

 

minutes, using its default IP Address of 172.17.5.5. After 15

 

minutes, it will automatically reset and again attempt to acquire

 

an address. The LCD screen on the front of the VBrick will

 

indicate a DHCP failed message. Note: The VBrick appliance

 

requires a minimum DHCP lease length of 8 minutes to work,

 

however it is recommended to extend the lease time to what is

 

maximally available via the network to avoid disruptions.

 

 

IP Address

IP Address of the VBrick.

 

 

Subnet Mask

Subnet mask for the VBrick address.

 

 

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Gateway IP Address

Valid gateway IP Address for communicating across distinct

 

network segments. A valid gateway IP address is essential even

 

though the VBrick will operate without one in some cases. When

 

no gateway is configured, the VBrick may be unable to

 

communicate with off-net IP hosts, for example, a foreign host

 

which is used for configuration management via IWS.

 

 

VBrick Host Name

The Host Name defaults to the Media Access Control (MAC)

 

address, a hardware address that uniquely identifies each node of

 

a network. The VBrick's Host Name acts to identify the VBrick

 

to various network applications including DHCP, SNMP and

 

VBrick application tools. Note: The Host Name syntax can be a

 

maximum of 18 characters, the first character must be a letter and the rest

 

can be letters, numbers or hyphens.

 

 

Network Interface

Note: The settings for Interface Speed and Interface Type are

Speed

interdependent. They must both be set to Automatic or they

 

must both be set manually. Manual settings should be used only

 

in the rare case when the VBrick is attached to network

 

equipment that does not support auto negotiation. The VBrick's

 

capabilities may be limited when its Ethernet link is at 10 Mbps

 

and/or Half Duplex. If auto negotiation fails, the VBrick

 

defaults to 10Mbit, half duplex and attempts "parallel detection,"

 

an alternative way to sense speed. Status parameters are available

 

on the network status screen to indicate the state of the link and

 

the current configuration of the Ethernet hardware. In auto

 

mode, they reflect the results of the negotiation and in manual

 

mode they follow the configuration options.

 

(10Mb, 100Mb, Automatic). This allows the Ethernet interface of

 

the VBrick to be manually forced to 100 Mbps or 10 Mbps. The

 

default setting is Automatic which enables auto negotiation in

 

the VBrick so it will automatically match its speed setting to the

 

speed of the switch or hub to which it is attached. Automatic is

 

the default and recommended setting.

 

 

Network Interface Type

Half-Duplex/Full-Duplex/Automatic. This allows the Ethernet

 

interface of the VBrick to be manually forced to Full Duplex or

 

Half Duplex. The default setting is "Automatic" which enables

 

auto negotiation in the VBrick so it will automatically match its

 

duplex setting to that of the switch or hub that it is attached to.

 

Automatic is the default and recommended setting. In order for

 

the Network Auto Negotiate feature to work effectively, the

 

Ethernet switch must also support auto negotiation. A manually

 

configured switch will only allow the VBrick to discover the

 

connection speed—not the mode (full or half duplex).

 

 

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MPEG-2 Configuration

 

 

 

 

 

 

 

 

 

 

 

Maximum Transmission

Range 1024–1500 (default = 1500). The MTU is used for all

 

 

Unit Size

 

network traffic from the VBrick and defines the largest network

 

 

 

 

packet size that will be transmitted. A higher MTU brings higher

 

 

 

 

bandwidth efficiency and VBrick recommends using the default.

 

 

 

 

However you may wish to reduce MTU size to meet the

 

 

 

 

requirements of some networks with VPN or other security

 

 

 

 

tunnels that cannot tolerate 1500-byte packets.

 

 

 

 

 

 

 

Domain Name Server

 

 

 

 

 

 

Primary Server IP

This is the primary server used for DNS.

 

 

Address

 

 

 

 

 

 

 

 

Secondary Server

This is the secondary server used for DNS.

 

 

IP Address

 

 

 

 

 

 

 

 

Default Domain

This is the domain name used for DNS. Note that you can use the

 

 

Extension

default (blank) values for these items.

 

 

 

 

 

 

Network Time Synchronization

These fields are used to synchronize network time using the host name or IP address of a known server to provide a synchronized time for all appliances in the network. To enable Network Time Synchronization after these parameters are set, go to Configuration: System > General on page 44 and check the box.

Note To Network Administrators. DHCP Option 4 is used by the DHCP server to return SNTP server addresses. This option must be enabled in the DHCP server for these addresses to be returned to the VBrick. If the DHCP server configuration is unknown, it is recommended that the address(es) be manually entered since the DHCP server-supplied address will always override a manually-entered address.

Primary Server IP Address

Primary host name (VBrick Host Name or DNS Host Name)

or Host Name

or IP address of valid SNTP server providing time

 

synchronization. A blank field indicates the server address

 

will be acquired via the DHCP server only if the Network

 

DHCP field above is checked.

 

 

Secondary Server IP

Secondary host name (VBrick Host Name or DNS Host

Address or Host Name

Name) or IP address of valid SNTP server providing time

 

synchronization. A blank field indicates the server address

 

will be acquired via the DHCP server only if the Network

 

DHCP field above is checked.

 

 

Configuration: Network > Routing

The MPEG-2 Appliance requires no routing configuration for the vast majority of network uses. Use these settings only in those rare cases when your network requires advanced routing features in the appliance.

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Routing Method

This selects which routing method will be used: Changes made to the

 

Routing Method will require a reset of the box.

Static – Allows routes entered in the static routing table to be automatically applied to the internal routing tables, after a powerup.

RIP Version 1 – Configures the VBrick to listen to RIP announcements. Routes are dynamically added per RIP specification.

RIP Version 2 Broadcast – Configures the VBrick to listen to RIP version 2 announcements. In this mode, RIP will perform classless routing based upon subnet mask.

RIP Version 2 Multicast – Configures the VBrick to listen to RIP version 2 announcements that are sent in multicast mode. Both broadcast and multicast announcements are processed.

Static Routing

This table provides for user defined routing entries.

Table

• Destination Network – Enter the destination address to be

 

manually routed.

Local Gateway IP – Enter the Gateway to be used, when the forwarding destination address is as specified.

Network Mask – Sets the network mask to be associated with the destination address.

Error – This read-only field is used to report field entry error related to the route.

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MPEG-2 Configuration

Configuration: Network > Management

These parameters define information used in the SAPs emitted by the VBrick, which are received by the VBDirectory management tool (see the VBDirectory User Guide) and other VBrick applications such as the ETV Portal Server.

Group Name

Optional. This parameter defines the Group Name. It is included in

 

the Management SAPs used by VBDirectory. It is used for organizing

 

VBricks into groups to simplify use of VBDirectory.

 

 

Unit Number

Optional. The appliance unit number (range 0–2147483647) is used to

 

identify each VBrick in a group.

 

 

Management SAP

Used by VBDirectory or MCS to detect the unit for the purpose of

 

remote management. The following parameters apply.

 

 

Transmit Enable

This parameter controls the transmission of the Management SAPs

 

(Enable or Disable).

 

 

Retransmit Time

This parameter defines the Management SAP Retransmit Time.

 

 

Time to Live

The number of hops (between routers) for which a Management SAP

 

is valid on the network.

 

 

Type of Service

The TOS (Type of Service) can be configured in the IP header to

 

establish packet priority in the network.

 

 

IP Address

This parameter defines the Destination IP Address for Management

 

SAPs.

 

 

Port

This parameter defines the Destination Port for Management SAPs.

 

 

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Configuration: Network > IPv6

In the current implementation of IPv6, MPEG-2 encoded streams can be unicast over IPv6 to an IPv6-enabled version of VBrick StreamPlayer. In this version, you continue to manage and configure the appliance over IPv4.

IPv6 Auto Config Enable

Enable IPv6. When enabled, the IPv6 parameters for IP

 

Address and Gateway IP Address are automatically set. This is

 

the recommended method.

 

 

IP Address

IPv6 IP address of the VBrick.

 

 

Gateway IP Address

Valid gateway IPv6 IP address for communicating across

 

distinct network segments. A valid gateway IP address is

 

essential even though the VBrick will operate without one in

 

some cases. When no gateway is configured, the VBrick may be

 

unable to communicate with off-net IP hosts, for example, a

 

foreign host which is used for configuration management via

 

IWS.

 

 

Configuration: Billboard

The Billboard feature allows you to display text and/or graphics on a TV monitor. The displayed billboard can span multiple pages with each page displayed for a specified period of time. Some uses of the billboard feature are to announce a daily calendar of events, directions to a particular conference room or even a slide presentation in conjunction with displayed video. VBrick models 62xx, 52xx and 53xx have a built in mini-browsers that support viewing limited HTML pages. The pages can either be kept inside the VBrick as part of the file system, or can be located on a remote HTTP server. Each page of the billboard is built using an HTML page with text and graphics created using the HTML tags supported. If billboard is to be supported on a remote server, the appliance requires read access to the HTTP server and may need to be configured. The following URL example shows the default page preconfigured by VBrick.

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MPEG-2 Configuration

On/Off

Turn Billboard on or off.

 

 

IR

Enable the IR remote control. If enabled you can turn the Billboard

 

on or off using the remote.

 

 

URL

The local or external URL of the Billboard page.

 

 

Using the Billboard

Billboard may be invoked in several ways. Either use the PC browser to communicate with the VBrick Integrated Web Server (see separate section) to apply the billboard and turn it on and off, or press the Billboard key on the optional remote control to toggle it on and off. Use of the remote can be enabled or disabled through the configuration. Using IWS (or the VBrick SDK) an administrator can turn on a particular billboard remotely, and prevent anyone else from using a remote to toggle it on/off. If you have a dual decoder system, the remote has keys to select between two decoders.

By turning the billboard on/off, the saved URL is invoked and the browser will attempt to display the resulting page. The URL can be configured to be a local file with the prefix ‘file:/ /' or point to remote server with the prefix http://. The default billboard is assumed to be a file located within the VBrick file system, file://./BB01/VB_1.HTM. If the billboard URL points to a file within the VBrick, the filename has to follow the DOS 8.3 filename convention (i.e. limited file name length). The valid extensions supported by the billboard are

.HTM, .JPG, .GIF, and .BMP. It is common for the billboard pages to have an .HTM extension. Remote URLs are restricted to 255 characters.

Billboard FTP

It is possible to use FTP (File Transfer Protocol) to modify the contents of one of the preconfigured Bulletin Board files resident on the VBrick. Use the browser to FTP files, or any of the many FTP applications. Enter in the browser window:

FTP://xxx.xxx.xxx.xxx (where x is the IP address of the VBrick appliance).

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http://172.16.2.79/VB_1.HTM
file://./BB01/VB_1.HTM
file://./BB01/VB_1.HTM

Use the Username and Password (default is case sensitive admin, admin) to login to the VBrick. BB01 through BB16 are directories established to receive Billboard content. It is possible to cut and paste new contents to a Billboard location from a file located anyplace on the network or on the computer. To view the contents on the VBrick, change the URL in the Billboard Section of the Integrated Web Server. In this example, the URL for the new file in IWS Configuration: Billboard would read: file://./BB03/atm.gif.

Billboard URLs

A URL for the billboard is much like a URL on the Internet. URLs can be local or remote, and typically point to the source of the billboard to be displayed.

Local URL

A local URL points to a file within the VBrick, which can be downloaded to the VBrick using a FTP utility program. All local URLs begin with: file://. There are sixteen pre-configured directories to place custom billboards inside the VBrick. The billboard directories are named BB01 to BB16.

Example 1

A single page billboard is placed in BB01. It requires one image file. The billboard page is named VB_1.HTM. The URL, which is not case sensitive, to enter in the Billboard URL box is:

Example 2

A multi-page billboard is placed in BB01. It requires four image files, one for each page. The billboard pages are named VB_1.HTM, VB_2.HTM, VB_3.HTM, and VB_4.HTM. Each file is connected to the next page within the html file using the legal syntax. The URL to enter in the Billboard URL box is:

Remote URL

Example 1

A single page billboard on a remote server with IP Address 172.16.2.79. The name of the billboard file is VB_1.HTM. The resulting URL is therefore:

Example 2

A single page on a remote server called www.VBrick.com. The folder name is "billboards". The name of the billboard file is VB_1.HTM. The resulting URL is therefore:

http://www.VBrick.com/billboards/VB_1.HTM

Billboard File Types

The file types supported are html (.htm), JPEG (.jpg), GIF (.gif) and windows bitmap (.bmp). Progressive GIF and JPEG are not supported. For the mini-browser to display the images, the images have to be BMP, GIF, or JPG. Dynamically generated web pages are supported as long as the output is pure HTML and uses HTML tags that are part of the set as described below. The server side engine must generate the page. JavaScript and VBScript are not yet supported. Functions that require these features, like "mouseover", or "onclick" are not supported.

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MPEG-2 Configuration

Creating a Billboard

A billboard that fits on one screen (640 x 480 resolution) can be created using the following HTML tags:

A

DIR

H3

IMG

PRE

AREA

DL

H4

INPUT

SCRIPT

B

DT

H5

LI

SELECT

BASE

EM

H6

MAP

SMALL

BIG

FONT

HR

MENU

STRONG

BLOCKQUOTE

FORM

HTML

META

STYLE

BODY

FRAME

TH

NOBR

TABLE

BR

FRAMESET

TITLE

NOFRAMES

TD

CAPTION

HEAD

TR

OL

TEXTAREA

CENTER

H1

U

OPTION

UL

DD

H2

I

P

 

The billboard text generated by the browser is Times Roman. The Font sizes supported are <Font Size = 1> to <Font size = 7>. Background color and images are also supported. The standard HTML 16 color palette can be referred to by name, and other colors will be matched to the nearest color of a standard 232-color template. When creating billboards, please test your billboard for effect on all types of monitors on which it is going to be presented. S-Video output and Composite output from the V-Brick are supported.

Video Input

S-Video output from the VBrick to S-Video Input on the television yields the best picture to the TV monitor. If you do have S-Video input into your television set, it is recommended you use the S-Video output from the VBrick to the television. Most televisions also support composite input. The overlay image as used in the billboard can sometimes have the effect of "flicker" if the font is too small and used on a regular television. This is a product of the output video signal and the television. On higher-grade monitors, the effect is significantly reduced.

Font Sizes

It is recommended that font size 5 be used on the billboard. The VBrick has two types of video output signals. If S-Video out is used, the picture is significantly better than the Composite out. Text and graphics tend to appear sharper and do not flicker in S-Video as much as they do in the composite out. If a flickering effect makes your font unreadable, make it larger. Making the font bold or <STRONG> will reduce the effect of the flicker.

The drawing area for Billboard is about 600X400 pixels.

With a font size of 7, 8 lines of text fit on the screen.

With a font size of 6, 13 lines of text lines fit on the screen.

With a font size of 5, 18 lines of text fit on the screen.

Transparent Background

A web page can be created with a transparent background. The video will show through and any text or images will appear on top of the video. A custom META tag is used to support this feature. In the <HEAD> portion of the HTML page, enter the following. The chosen background color will then be overwritten by the transparent color.

<META HTTP-EQUIV="TRANSPARENT" CONTENT="YES">

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17

Configuration: Decoder

Configuration: Decoder > Video

The VBrick decoder is used to uncompress MPEG streams and display them on a TV or monitor.

Decoder Video

The format can be configured to be NTSC (30fps), PAL (25fps) or

Format

PAL-M (30fps). PAL-M is a video format standard used in Brazil. The

 

main difference between PAL and PAL M is a lower resolution (525

 

lines instead of 625) and a higher frame count (30 frames per second

 

at 60Hz versus 25 frames per second at 50Hz). Note: Changing and

 

applying this parameter will cause the VBrick to reset.

 

 

Logo Display

Lets you display the VBrick logo on the decoder output (monitor).

 

VBrick provides a Logo Customization Utility (available on the

 

website) if you want to create an individualized logo.

 

 

No Data Mode

This allows setting the screen for a decoder with no video input to

 

having either the last screen appear either frozen or blank.

 

 

Closed Caption

This setting enables or disables closed captioning. Closed Captioning

 

does not operate when the Picture in Picture feature is selected. It is

 

necessary to disable PIP. In SIF mode only CC1 and CC2 are valid.

 

CC3 and CC4 fields are not supported.

 

 

PID

MPEG-2 transmits its data in packets of 188 bytes each. At the start

 

of each packet is a packet package identifier (or PID) that identifies

 

the data stream associated with that packet. Because the MPEG-2 data

 

stream might contain multiple video programs, the decoder has to

 

choose a particular video channel to play. The PID selection provides

 

that feature. If the user selects the automatic option, the first video

 

PID identified will be used to select the video channel.

 

 

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MPEG-2 Configuration

 

 

 

 

 

 

 

Actual PID

Actual PID being played. This read-only parameter is of interest when

 

 

the user selects automatic. A value of 8191 indicates the PID has not

 

 

yet been established.

 

 

 

Configuration: Decoder > Audio

The audio selection provides for the control and configuration of the decoded audio stream.

Output Mode

The audio output mode can be one of five possible setting as shown

 

below. Stereo directs the incoming left audio channel to the left

 

output, and the incoming right audio channel to the right output. Mix

 

combines the left and right audio channels and directs the combined

 

output to both the left and right audio channels. Left selects the input

 

left audio channel and sends it to both the left and right output

 

channels. Right selects the input right audio channel and sends it to

 

both the left and right output channels. Mute suppresses audio

 

output. The Dual to options are only operational on an input stream

 

that was encoded in Dual audio mode; otherwise, the Output Mode is

 

determined by the corresponding audio encoder setting.

 

Dual to Stereo

 

Dual to Mix

 

Dual to Left

 

Dual to Right

 

Mute

 

 

Output Level

Hardware-dependent; not shown on all models. Changes the range of

 

values for Left and Right Gain.

 

Normal – 14 dB to -48 dB (+14 to -48 on some decoder models).

 

Alternate – 8 dB to -54 dB (+14 to -48 on some decoder models).

 

 

Left Gain

Used to adjust volume. Default = 0.

 

 

 

VBrick MPEG-2 Appliance Admin Guide

19

Right Gain

Used to adjust volume. Default = 0.

 

 

Configure PID

MPEG-2 transmits its data in packets of 188 bytes each. At the start

 

of each packet is a packet identifier (or PID) identifies the data stream

 

associated with that packet. Because the MPEG-2 data stream might

 

contain multiple audio programs, the decoder has to choose a

 

particular audio channel to play. The PID selection provides that

 

feature. If the user chooses the automatic PID option, the first audio

 

PID detected will be used to select the audio channel.

 

 

Actual PID

Actual PID being played. This read-only parameter is of interest when

 

the user selects automatic. A value of 8191 indicates the PID has not

 

yet been established.

 

 

Configuration: Decoder > Network

These parameters are decoder level IP parameters that instruct the decoder which IP stream to decode on TV monitors.

Receive Enable

Controls whether the decoder receives the video from the network.

 

 

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MPEG-2 Configuration

 

 

 

 

 

 

 

Receive Address

Allows the user to specify how the receive address will be

 

Mode

configured: IP address, Host Name, or Program Name. If Program

 

 

Name, select from the dropdown list of Available Programs.

 

 

 

 

Available Programs

Select from dropdown list of available programs. This automatically

 

 

populates Receive IP Address and Source IP Address.

 

 

 

 

Receive Host Name

Sets the source for video by using the Host Name. This parameter

 

 

can be used only for a unicast source.

 

 

 

 

Receive IP Address

In multicast mode, this parameter defines the IP address of the

 

 

stream to be decoded and displayed. In unicast mode, this

 

 

parameter is optional. If left blank, the decoder will accept all data

 

 

received on the receive IP port. If set, decoder will communicate

 

 

with any VBrick that has the encoder "unicast poll" option set, and

 

 

instruct it not to transmit it's stream unless this VBrick has this

 

 

receive IP Address.

 

 

 

 

Receive Port

The receive port designates what local IP/UDP port is assigned to

 

 

listen for incoming video.

 

 

 

 

Receive Mode

This read-only parameter informs the operator whether the selected

 

 

receive IP Address is Unicast or Multicast.

 

 

 

 

Packet Ordering

The identification number in the IP header determines IP packet

 

 

ordering. The packet ordering feature lets the VBrick re-order

 

 

packet fragments as they arrive. If you disable packet ordering, the

 

 

out-of-order packets are simply discarded. Packet ordering may

 

 

increase latency and can add up to 100 ms of additional delay.

 

 

 

 

Jitter Queue

Delay jitter is defined as the variation of the delays with which

 

 

packets traveling on a network connection reach their destination.

 

 

During exceptionally long periods of delay, a large quantity of video

 

 

packets will be buffered in the network. When the situation that

 

 

caused the delay is resolved, the buffered frames will be burst, as a

 

 

group, to the decoder. The handling of delay jitter is then a problem

 

 

of having enough buffering in the decoder to handle a long delay,

 

 

allowing the video to seem uninterrupted, and enough capacity in

 

 

the buffer to handle the subsequent burst that follows once the

 

 

delay has terminated. Typically, long delays in the network are

 

 

associated with packet loss. No amount of buffer at the VBrick will

 

 

correct packet loss. When first enabled, the jitter Q buffers 85ms of

 

 

the video stream. Once the jitter Q has been filled, the jitter queue

 

 

meters out the buffered video to the decoder at a rate equal to the

 

 

rate of the video stream. The jitter queue is drawn down during

 

 

times of packet drought, allowing the video to seem uninterrupted,

 

 

but is large enough to handle the subsequent 85ms burst of packets

 

 

that result once the drought is over. The impact of enabling the

 

 

jitter queue is that a 85ms delay is imposed on the video stream.

 

 

 

 

SAP IR Program

Enables or disables the ability of the operator to select the program

 

Guide

guide feature from his IR remote control.

 

 

 

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21

SAP Timeout

If SAP Timing method is fixed, this provides a configurable timeout

 

for program guide selections, in seconds. If no SAP is received

 

within the timeout period, the entry is removed from the table of

 

available programs. If SAP Timeout is variable, the entries are

 

removed from the program table as per RFC 2974 (Refer to

 

Configuration: System > General).

 

 

SAP Category

This string can contain one or more category keywords that will

 

limit the video streams displayed by the Program and Conference

 

Guides. Keywords should be separated by spaces. Note that

 

characters are ASCII and can only be lowercase. The total of all

 

keywords in the string is 36 characters including spaces. If the

 

Decoder's category string contains both the keywords "Math" and

 

"Science," only video streams whose encoders have one or more of

 

these keywords assigned, or those that contain no keyword, will be

 

available to this Decoder. The Encoder's Category is established on

 

the Configuration: Encoder > SAP menu screen of IWS.

 

Note also the wildcard character * is supported at the very end of

 

keywords only. It is only valid if one or more additional characters

 

of any type follow the last non-wildcard character. Note that * with

 

spaces on both sides will display all streams. Having no category

 

defined (default) displays all streams.

 

 

SAP IP Address

The receive IP address used to populate the Program Guide. This is

 

typically set to the Announce Program Guide SAP of the encoder.

 

 

SAP Port

The receive IP port used to populate the Program Guide. This is

 

typically the port number of the encoder.

 

 

Configuration: Decoder > Picture-In-Picture

This menu allows the user to configure the Picture-In-Picture parameters on the decoder output. The Picture in Picture feature is only available for encoder/decoder VBrick appliances.

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MPEG-2 Configuration

Picture in Picture

By checking the Box this will enable the Picture-In-Picture display.

 

 

PIP Location

Picture-In-Picture can be any of the following 5 locations: top left,

 

top right, bottom left, bottom right and center.

 

 

PIP Horizontal

The Picture-In-Picture horizontal size can be changed to any of the

Size

following 4 sizes – full, half, quarter, thumbnail.

 

 

PIP Vertical Size

The Picture-In-Picture vertical size can be changed to any of the

 

following 4 sizes: full, half, quarter, thumbnail.

 

 

Brightness

(0 – 15) The luminance is the information about the varying light

 

intensity of an image, is best described as brightness. Default = 0.

 

 

Saturation

(0 – 15) The saturation is the spectral purity or intensity of a color.

 

Default = 8.

 

 

Hue

(-16 to +15) The hue is the attribute by which a color may be

 

identified within the visible spectrum. Hue refers to the spectral

 

colors of red, orange, yellow, green blue and violet. Default is 0.

 

Adding hue reduces the saturation. Note that the Picture in Picture

 

display will override the display of Closed Caption Text.

 

 

VBrick MPEG-2 Appliance Admin Guide

23

Configuration: Encoder

Configuration: Encoder > Transport

Transport Rate

This option allows selection of the actual transport rate for the

 

MPEG-2 transport stream transmitted from this encoder. If Auto is

 

selected, the VBrick will choose an appropriate conservative transport

 

rate, which will allow any video interval to be clearly transmitted. If

 

you enter a rate that is less than the combined video, audio and over-head an

 

error message will be displayed indicating that the rate selected is too low.

 

 

Actual Transport

This read-only parameter provides the actual transport stream rate. It

Rate

is of particular interest when the automatic option is selected above.

 

Even if a transport rate is explicitly selected, the actual transport rate

 

will differ from the selected rate since only certain rates are

 

supported.

 

 

Transport Content

If the model number ends in -xxx1/-xxx2, the user can choose the

 

transport content to be Video + Audio, Video only or Audio only. If

 

the model number ends in -xxx0, the option is not displayed and

 

video and audio always comprises the transport content.

 

 

Delay Mode

If the model number ends in -xxx1/-xxx2, the delay mode can be set

 

to Low, Medium or High Delay. If the model number ends in –xxx0,

 

the delay mode can be set to Low or High Delay. In low and medium

 

delay modes, the Reference Distance is forced to 1 (no B frames).

 

Low delay reduces latency but may also reduce video stability,

 

depending on video content. If minimum latency is not an issue in the

 

application, high delay will maximize video stability. Default Delay

 

Mode is set to High Delay.

 

 

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MPEG-2 Configuration

 

 

 

 

 

 

 

Audio PID

MPEG-2 transmits its data in packets of 188 bytes each. At the start

 

 

of each packet is a packet identifier (or PID) that identifies the data

 

 

stream associated with that packet. It is possible that a non-VBrick

 

 

decoder may only accept audio streams with a certain PID setting. If

 

 

so, then this feature allows compatibility with these decoders.

 

 

 

 

Video PID

MPEG-2 transmits its data in packets of 188 bytes each. At the start

 

 

of each packet is a packet identifier (or PID) that identifies the data

 

 

stream associated with that packet. It is possible that a non-VBrick

 

 

decoder may only accept video streams with a certain PID setting. If

 

 

so, then this feature allows compatibility with these decoders.

 

 

 

 

PCR PID

MPEG-2 transmits its data in packets of 188 bytes each. At the start

 

 

of each packet is a packet identifier (or PID) that identifies the data

 

 

stream associated with that packet. It is possible that a non-VBrick

 

 

decoder may only accept PCR (Program Clock Reference) streams

 

 

with a certain PID setting. If so, then this feature allows compatibility

 

 

with these decoders. Note that certain decoders may require the PCRs

 

 

to be embedded in the video stream. If so, these decoders are not

 

 

compatible with the VBrick encoder.

 

 

 

 

Destination 2

The user can configure the appliance to transmit an Elementary

 

Stream Type

stream as a secondary stream. A video ES, or video elementary

 

 

stream, consists of all the video data for a sequence, including the

 

 

sequence header and all the subparts of a sequence. A Transport

 

 

stream contains both video and audio.

 

 

 

Configuration: Encoder > Video

These parameters are used to configure the Encoder video settings. The encoder video and audio configurations change if the appliance has an SDI, Serial Digital Interface. Please refer to SDI Configuration on page 57 for more information.

VBrick MPEG-2 Appliance Admin Guide

25

Video Format

The format can be configured to be NTSC (30fps), PAL (25fps) or

 

PAL-M (30fps). (The PAL-M feature is supported on models ending

 

in xxx1 or higher.) PAL-M is a video format standard used in Brazil.

 

The main difference between PAL and PAL-M is a lower resolution

 

(525 lines versus 625) and a higher frame count (30 frames per second

 

at 60 Hz versus 25 frames per second at 50 Hz).

 

 

Video Aspect Ratio

Aspect ratio is the ratio of the width of the image to the height of the

 

image. Standard TV images generally use an aspect ratio of 4:3; DVD

 

players and some camera can produce 16:9. Set this value to match

 

the video input source, either 4:3 or 16:9.

 

 

Video Input Type

The input can be changed to accept either S-Video or composite

 

(BNC). Note: VBSSM models do not support S-Video.

 

 

Video Source

This enables the user to select the bandwidth for tracking the video

 

input.

 

• Normal – Select for stable sources such as SDTV, DVD or

 

camera.

 

• High Jitter – Select for unstable sources such as VCR or VTR.

 

 

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MPEG-2 Configuration

 

 

 

 

 

 

 

Closed Caption

Disables or enables closed captioning. It is recommended that Closed

 

Enable

Caption be disabled unless required by an application. Default =

 

 

disabled. Does not apply to models ending in -xxx0.

 

 

• Disabled – Default.

 

 

• Video CC Enabled – Reads the embedded video closed captioning

 

 

text.

 

 

• Inserted CC Enabled – Inserts the user defined text set in the

 

 

Closed Caption Text field.

 

 

 

 

Closed Caption

Sets the Closed Caption Type to either ATSC Compliant or Alternate

 

Type

Format. When set to ATSC compliant, the type conforms to ATSC

 

 

specification a53. When set to the Alternate Format, the type

 

 

conforms to a proprietary method. Does not apply to models ending

 

 

in -xxx0.

 

 

 

 

Inserted CC

Sets the rate with which the closed captioning field gets updated for

 

Update Rate

the box (default is medium). Only works when Inserted CC is

 

 

enabled. Does not apply to models ending in -xxx0.

 

 

• Slow – When set to slow, the inserted closed captioning field will

 

 

be updated every 60 seconds.

 

 

• Medium – When set to medium, the closed captioning field will

 

 

update every 20 seconds.

 

 

• Fast – When set to fast, the closed captioning field will update

 

 

every 5 seconds.

 

 

 

 

Inserted CC Text

Sets the text that is inserted into the closed captioning field of the

 

 

encoded stream (default is "inserted string" \h \d \t \c). Only works

 

 

when Inserted CC is enabled. Does not apply to models ending in

 

 

-xxx0. Note: The maximum number of characters supported is 32

 

 

(including the Host Name, Date and Time). No double quotes "", less

 

 

than <, or greater than > symbols are allowed as part of the

 

 

configuration string. If the whole string does not display on the

 

 

screen the default string can be organized to have the Host Name (/

 

 

h) last. The special strings are:

 

 

\h or \H – Host Name

 

 

\d or \D – Current Date

 

 

\t or \T Current Time

 

 

\c# or \C# – Set Color (where # = the number corresponding to

 

 

color): 0 = White, 1 = Green, 2 = Blue, 3 = Cyan, 4 = Red, 5 =

 

 

Yellow, 6 = Magenta.

 

 

 

 

Inserted CC Row

Sets the position on the screen where the text defined in the Closed

 

 

Caption Text field will appear in the decoded video. Can be set from

 

 

1 through 15, where 1 indicates the top of the screen and 15 indicates

 

 

the bottom of the screen (default is 15), when Inserted CC is enabled.

 

 

Does not apply to models ending in -xxx0.

 

 

 

VBrick MPEG-2 Appliance Admin Guide

27

Reference Distance

For models ending in -xxx1/-xxx2, enables a user to set the

 

difference between consecutive reference frames within a group of

 

pictures (GOP). The values available are 1–3 (default = 2). If the

 

Encoder Transport Delay setting is low or medium, the value must be

 

1. Does not apply to models ending in -xxx0. If Reference Distance

 

and Intrapicture Distance are both 1, the encoder will produce all I

 

frames.

 

 

Intrapicture

Enables the user to set the distance between consecutive I frames

Distance

within a Group Of Pictures (GOP). The values available are 1–19

 

(default = 16). Does not apply to models ending in -xxx0. If

 

Reference Distance and Intrapicture Distance are both 1, the encoder

 

will produce all I frames.

 

 

Luminance

0 to 255. Default = 128. The luminance is the information about the

 

varying light intensity of an image, which is best described as

 

brightness.

 

 

Contrast

0 to 127. Default = 62. The contrast is the range of light-to-dark

 

values of an image that are proportional to the voltage differences

 

between the black and white levels of the signal.

 

 

Saturation

0 to 127. Default = 66. The saturation is the spectral purity or

 

intensity of a color.

 

 

Hue

Range is -128 to 127. Default = 0. The hue is the attribute by which a

 

color may be identified within the visible spectrum. Hue refers to the

 

spectral colors of red, orange, yellow, green blue and violet. Adding

 

hue reduces the saturation.

 

 

Resolution

For models ending in -xxx0, the video resolution can be adjusted to

 

be Full D1, 2/3 D1, ½ D1. For models ending in other than -xxx0,

 

the video resolution can be Full D1, 2/3 D1, ½ D1 or 352x240 (SIF).

 

Note that D1 resolution is not recommended at video encode rates

 

below 5 Mbps. In SIF mode only closed captioning CC1 and CC2 in

 

the menu settings of the video display are valid (TV menu monitor

 

settings) CC3 and CC4 fields are not supported. The actual

 

resolutions for NTSC and PAL are listed below:

 

NTSC D1 720x480

 

NTSC 1/2 D1 352x480

 

NTSC 2/3 D1 480x480

 

NTSC SIF 352x240

 

PAL D1 720x576

 

PAL 1/2 D1 352x576

 

PAL 2/3 D1 480x576

 

PAL CIF 352x288

 

 

Bit Rate

The encoder's bit rate can be adjusted from 1 Mbps to 10 Mbps for

 

models ending in –xxx0. For models ending in other than -xxx0, the

 

bit rate can be adjusted from 1–15 Mbps.

 

 

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MPEG-2 Configuration

Video GOP Time The hours, minutes and seconds for the GOP time, the creation time of the MPEG video stream. Can be set to one of three selections:

Encoder Time (default)

GMT Time

Local Time

Note: Within the GOP header of the video stream is a Time Stamp, in hours, minutes and seconds. If the receiving application uses this time stamp, it is desirable to configure the encoder to insert a real time of day in either local or GMT time. If no application is using this data, the setting should be left at Encoder Time, which merely uses the time elapsed since the encoder hardware was last reset.

Meta Data

When Metadata is enabled a new field will appear on the screen

 

allowing the operator to insert metadata strings into the video as User

 

Data. The normal use of metadata is to allow accompanying

 

synchronized URL references to displayed in rich media applications.

 

The VBrick StreamPlayer has the capability of extracting the

 

metadata references and presenting them to an appropriate

 

application. Contact VBrick for details.

 

 

Meta Data String

Shown if Meta Data is enabled. Maximum 58 characters. Click Insert

 

Now to insert the meta data string into the stream.

Configuration: Encoder > Audio

Models ending in other than -xxx0 may contain different types of audio hardware. The difference can be identified by physical differences in the audio connectors or by the revision number identified in Status: Encoder/Decoder Status – PLX EEProm Revision E. The model identified as PLX EEProm Revision 1 has black plastic collars around the L/R audio jacks. The model identified as PLX EEProm Revision 2 has metal screw-on collars. Where features differ between the models, the differences are noted. For example, certain VBSSM models do not support audio (see Table 1 VBSSM Models † for details).

VBrick MPEG-2 Appliance Admin Guide

29

Audio Input

Input can be from an Audio Jack (1/8" mini-phono jack) or from

 

Microphone DIN (AudioMate microphone). The default setting is

 

Audio Jack.

 

 

Audio Balance

-127 to 127. Sets audio balance between left and right channels. Zero

 

is balanced. 127 sends audio to right channel only; -127 to left

 

channel.

 

 

Audio Input Level

Hardware-dependent; not shown on all models. See Audio Gain field

 

for more details.

 

• Normal – 7 to –53 dB and mute.

 

• Alternate – 12 to –48 dB and mute.

 

 

Audio Gain (dB)

This setting controls the audio level of the encoder. It is model

 

dependent:

On models ending in –xxx0 the settings are from 3 to –60 dB and mute. The default setting is 0 dB. A setting of 3 is equivalent to full volume, -60 effectively mutes the encoder audio.

On models ending in –xxx1/–xxx2 the settings differ based on the Status: Encoder > PLX EEProm Revision number:

If the Encoder PLX EEProm Revision is 1, the settings are from 3 to –48 dB and mute. The default setting is 0 dB. A setting of +3 is equivalent to full volume and -60 effectively mutes the encoder audio.

If the EEProm PLX EEProm Revision is 2 or higher and the Audio Input Level is set to Normal, the settings are from 7 to –53 dB and mute. The default setting is 0 dB. A setting of 7 is equivalent to full volume, -53 effectively mutes the encoder audio. If the Audio Input Level is set to Alternate, the settings are from 12 to –48 and mute.

The default setting is 0 dB. A setting of 12 is the equivalent of full volume, -48 effectively mutes the encoder.

L+R Bit Rate

The transmission rate of the audio stream. If the model ends in -xxx0,

 

the transmission rate can be 192, 256 and 384 Kbps **If the model

 

ends in -xxx1/-xxx2 the audio bit rate can be 256 or 384 Kbps.

 

 

Sample Frequency

Frequency at which the audio is sampled at the encoder. If the model

 

number ends in -xxx0, the sampling rate can be 44.1 KHz or 48 KHz.

 

If the model number ends in -xxx1/-xxx2 the sampling frequency is

 

48 KHz.

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© 2007 VBrick Systems, Inc.

 

 

MPEG-2 Configuration

 

 

 

 

 

 

 

Audio Channels

Model dependent. (If the EEPROM Revision is 2 or higher, changing

 

 

the Audio Channel setting affects the Sample Frequency. )

 

 

• If the model number ends in –xxx0, the parameter can be set to

 

 

Stereo, Mono and Dual. The default setting is Stereo.

 

 

• If the model number ends in –xxx1/-xxx2, the settings are

 

 

dependent on the PLX EEProm revision Number:

 

 

• If the EEProm Revision is 1, this parameter can be set to Stereo

 

 

and Mute. The default setting is Stereo.

 

 

• If the EEProm Revision is 2 or higher, the parameter can be set to

 

 

Stereo, Mono (left to stereo) or Mute. Default = Stereo.

 

 

Stereo – Stereo directs the input left channel to the left channel in

 

 

the audio stream and the input right channel to the right channel in

 

 

the audio stream.

 

 

Mono (left to stereo) – Mono directs the left input channel to both

 

 

the left and right channel.

 

 

Mono (left only) – This option allows only the left input channel

 

 

to be carried in the stream. Output is to the left channel only.

 

 

 

Configuration: Encoder > Destination 1/Destination2

Transmit Enable

Controls whether the primary encoder output is to be transmitted

 

to the network.

 

 

VBrick MPEG-2 Appliance Admin Guide

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+ 89 hidden pages