Nero Digital™ Plug-in for Adobe® Premiere® Manual
Nero AG
Copyright and Trademark Information
The Nero Digital™ Plug-in for Adobe
®
Premiere® manual and all its contents are protected
by copyright and are the property of Nero AG. All rights reserved. This manual contains
material that is protected by internationally valid copyright. No part of this manual may be
reproduced, transmitted or transcribed without the express written permission of Nero AG.
Nero AG rejects any claims that transcend the clauses of the guarantee rights. Nero AG
does not undertake any liability for the correctness of the content of the Nero Digital™ Plugin for Adobe
Nero Digital™ Plug-in for Adobe
®
Premiere® manual. The contents of the software supplied, as well as of the
®
Premiere® manual, may be changed without prior warning.
All trade names and trademarks are the property of their respective owners.
The trademarks mentioned here are named for information purposes only.
Copyright © 2007 Nero AG and its licensors. All rights reserved.
REV 1.0
Contents
Contents
1 General information 5
1.1 About the manual 5
1.2 About the Nero Digital™ plug-in for Adobe® Premiere® 5
2 Technical information 6
2.1 System requirements 6
2.1.1 Operating systems 6
3 Installing the Nero Digital™ plug-in for Adobe® Premiere® 7
4 Setting chapter and subtitle markers 8
4.1 Exporting to Nero Digital™ 10
5 Nero Digital™ settings 11
5.1 Nero Digital™ profiles 11
5.1.1 Creating a copy of a Nero Digital™ profile 12
5.2 Nero Digital 12
5.2.1 Video 12
5.2.2 Audio 13
5.2.3 Subtitle 13
5.2.4 Chapters 14
5.2.5 Muxer 14
6 Nero Digital™ expert settings 15
6.1 MPEG-4 glossary 15
6.2 MPEG-4 profiles 17
6.3 Creating a new default profile for expert settings 17
6.4 MPEG-4 Encoder 18
6.4.1 Encoding Method 18
6.4.2 Quality/Speed 18
6.4.3 Advanced 20
6.4.4 Keyframes 21
6.4.5 Error resilience 21
6.4.6 Matrices 22
6.4.7 AVC Encoder 22
6.4.8 Rate control 23
6.4.9 General Settings 23
6.4.10 Decision quality 23
Page 3
Contents
6.4.11 Encoding Tools 24
6.4.12 Visual Enhancement 24
7 List of figures 26
8 Index 27
9 Contact 28
Page 4
General information
1 General information
1.1 About the manual
This manual is intended for all users who want to find out about how to use Nero Digital™
plug-in for Adobe
®
Premiere®. It is process-based and explains how to reach a particular
objective on a step-by-basis.
In order to make best use of this manual, please note the following conventions:
Symbol Meaning
Indicates warnings, preconditions or instructions that have to be
followed strictly.
Indicates additional information or advice.
1. Start …
Æ
Î
OK
Chapter
A number at the beginning of a line indicates a request for
action. Carry out these actions in the order specified.
Indicates an intermediate result.
Indicates a result.
Indicates text passages or buttons that appear in the program
interface. They are shown in bold face.
Indicates references to other chapters. They are executed as
links and are shown in red and underlined.
[…] Indicates keyboard shortcuts for entering commands.
1.2 About the Nero Digital™ plug-in for Adobe® Premiere®
The Nero Digital™ plug-in for Adobe® Premiere® allows you to convert video files edited in
®
Adobe
Additional setting options are available during encoding.
The Nero Digital™ plug-in for Adobe
and in Adobe
For simplicity's sake the different versions are referred to generically as Adobe
in this manual.
Page 5
Premiere® into Nero Digital™ files (MPEG-4).
®
®
Premiere® Elements.
Premiere® is available both in Adobe® Premiere® Pro
®
Premiere®
Technical information
2 Technical information
2.1 System requirements
In addition to the general system requirements for the Nero suite, it is also necessary to
install Adobe
®
Premiere® to enable the Nero Digital™ plug-in for Adobe® Premiere® to be
installed
2.1.1 Operating systems
The Nero Digital™ plug-in for Adobe® Premiere® supports the same operating systems as
the Nero suite
Information about the system requirements for Adobe
operating systems and formats, can be found in the Adobe
®
Premiere®, such as supported
®
Premiere® documentation.
Page 6
Installing the Nero Digital™ plug-in for Adobe® Premiere®
3 Installing the Nero Digital™ plug-in for Adobe® Premiere®
Please note that it is important that Adobe
before you install Nero, as otherwise the plug-in will not be activated.
To install the Nero Digital™ plug-in for Adobe
1. Install Nero. To do this, follow the instructions in the QuickStart Guide.
Æ Nero has been installed.
®
Premiere® has been installed on your system
®
Premiere®, proceed as follows:
2. Open Adobe
Î The Nero Digital™ plug-in for Adobe
time Adobe
®
Premiere®.
®
Premiere® was opened after installing Nero.
®
Premiere® installed itself automatically the first
Page 7
Setting chapter and subtitle markers
4 Setting chapter and subtitle markers
You can set subtitle and chapter markers in the Adobe® Premiere® project which will then be
transferred to the MPEG-4 output file.
To do this, proceed as follows:
1. Open Adobe
2. Create a new project.
3. Import a video file you want to convert with Nero Digital™ into the Adobe
4. Insert the video in the timeline.
5. If you want to set chapter markers:
1. Set a marker at the required point in the timeline.
2. Repeat this step until you have set all the required markers.
3. Double-click on a marker.
Æ The Marker window is opened.
4. Enter the name of the chapter in the Chapter box in the Marker window. You can also
make an entry under Comments however this is optional.
5. Repeat the last two steps for all markers in the timeline that you want to convert into
chapter markers.
®
Premiere®.
®
Premiere® project.
Æ You have now set chapter markers.
6. If you want to set the subtitle markers:
1. Set a marker at the required point in the timeline.
2. Repeat this step until you have set all the required markers
3. Double-click on a marker.
Fig. 1: Marker window for chapters
Æ The Marker window is opened.
Page 8
Setting chapter and subtitle markers
4. Enter the required subtitle text in the Comments box in the Marker window. An entry is
required in the Comments box in order to create a subtitle.
5. In the Duration box enter the length of time for which the subtitle is to be displayed.
The length of time for which a subtitle is displayed must be at least one second. If the
duration is too short or not specified at all, the subtitle will not be displayed in the video.
6. Repeat the last three steps for all markers in the timeline that you want to convert into
subtitles.
Æ You have now set subtitle markers.
Fig. 2: Marker window for subtitles
Î The video now has markers for chapters and subtitles. You can now proceed to convert
the processed video to MPEG-4 format. The set markers are transferred to the MPEG-4
version.
Page 9
Setting chapter and subtitle markers
4.1 Exporting to Nero Digital™
To encode a video in Nero Digital™ format, proceed as follows:
1. Select File > Export > Nero Digital.
Æ The Nero Digital window is opened.
2. Specify where the output file is stored.
3. If you then want to make the expert settings for Nero Digital™, check the Advanced box in
the bottom right-hand corner.
You should only change the expert settings if you are sufficiently familiar with the area of
video encoding, in particular MPEG-4 encoding.
Poorly selected settings can have a significant negative impact on the quality of the output
file.
4. Make the settings in the Video, Audio, Subtitle, Chapter, and Muxer areas as required
Nero Digital™ settings).
(see
5. Click on the Next button.
Æ If you have checked the Advanced box, a window will open showing the Nero Digital™
expert settings.
1. Define the Nero Digital™ expert settings (see
Æ You have now defined the Nero Digital™ expert settings.
Nero Digital™ settings).
6. Click on the Export button to start the export process.
Î The export process is started. The Encoding to Nero Digital in progress… window is
displayed. The progress bar shows the progress of the encoding process in graphical
form.
Page 10
Nero Digital™ settings
5 Nero Digital™ settings
5.1 Nero Digital™ profiles
You can select the required profile in the Profile drop-down menu.
Here is a brief overview of the profiles:
MPEG-4 SP/ASP
Nero Digital™
Mobile
Nero Digital™
Portable
Nero Digital™
Standard
Nero Digital™
Cinema
Nero Digital™
HDTV
MPEG-4 AVC
Nero Digital™
Mobile AVC
Nero Digital™
Portable AVC
Nero Digital™
Standard AVC
Nero Digital™
Cinema AVC
Output file for cell phones and handheld devices; resolution
176x144 @ 15 fps; MPEG-4 SP AAC
Output file for PDAs and personal video players; resolution
352x288 @ 30 fps; MPEG-4 SP AAC
Output file for home players and set-top boxes (STB);
resolution 720x576 @ 25 fps/720x480 @ 30 fps; MPEG-4
ASP AAC
Output file for high-end home players and set-top boxes
(STB); resolution 1280x720 @ 30 fps; MPEG-4 ASP AAC
Output file for HDTV content; resolution 1920x1080 @ 30 fps;
MPEG-4 ASP AAC
Output file for cell phones and hand-held devices; resolution
176x144 @ 15 fps; MPEG-4 AVC HE-AAC (2.0)
Output file for PDAs and personal video players; resolution
352x288 @ 30 fps; MPEG-4 AVC HE-AAC (2.0)
Output file for home players and set-top boxes (STB);
resolution 720x576 @ 25 fps/720x480 @ 30 fps; MPEG-4
AVC HE-AAC (5.1)
Output file for high-end home players and set-top boxes
(STB); resolution 1280x720 @ 30 fps; MPEG-4 AVC HE-AAC
(5.1)
Nero Digital™
HDTV AVC
iPod outputs
Nero Digital™
iPod Video
Nero Digital™
iPod Video AVC
Page 11
Output file for HDTV content; resolution 1920x1080 @ 30 fps;
MPEG-4 AVC HE-AAC/ACC (5.1)
Output file for iPod video and car entertainment; resolution
480x480 @ 30 fps; MPEG-4 LC-AAC
Output file for iPod video and car entertainment; resolution
320x240 @ 30 fps; MPEG-4 AVC LC-AAC
Nero Digital™ settings
5.1.1 Creating a copy of a Nero Digital™ profile
You can copy or rename an existing Nero Digital™ profile and change the settings described
below.
To copy a Nero Digital™ profile, proceed as follows:
1. Click on the + button.
Æ The Create copy of the profile window is opened.
2. Enter the name of the new profile in the Name text box.
3. Enter a short description of the profile in the Description text box.
4. Click OK.
Î You have now copied an existing Nero Digital™ profile.
5.2 Nero Digital
You can use the button in the Nero Digital entry to select the folder on your hard drive
where the output file is to be stored.
5.2.1 Video
5.2.1.1
5.2.1.2
Bit Rate/Size
Quality
The settings you can make in the subentries of the Nero Digital entry are described below.
You can change the video track settings in the Video area.
You can use the slider to set the bit rate. The precise numerical value of the bit rate is
displayed in the Bit Rate box. The value here can also be increased or decreased using the
arrow buttons.
The bit rate changes proportionately to the change in file size in the Size box.
You can use the arrow buttons to increase or decrease the file size in the Size field. The file
size is proportionate to the bit rate setting.
You can define the method to be used to resize the output file with the Resize method dropdown menu.
If the Auto resize box is not checked, you can specify the resolution in two text boxes in
pixels. You can now enter the aspect ratio in the Aspect ratio boxes.
5.2.1.3
Name&Language
You can enter the name of the video track in the Name entry. The name of the Adobe®
Premiere
You can use the Language drop-down list to choose the language in which the video track is
to be recorded.
Page 12
®
project is referenced in the Name text box by default.
Nero Digital™ settings
5.2.2 Audio
You can change the audio track settings in the Audio area.
Select an entry from the drop-down menu that defines the specifications you want, such as
the sampling rate, number of channels, codec, and bit rate.
5.2.2.1
Name&Language
You can enter the name of the audio track in the Name entry. The name of the Adobe®
Premiere
You can use the Language drop-down list to choose the language i n which the audio track
is to be recorded.
5.2.3 Subtitle
The subtitles you have created are displayed in the Subtitle area (see Setting chapter and
subtitle markers
You can set the frame rate of the subtitles in the Frame Rate text box.
The
The
Subtitle files that you import must be in SRT or SUB format.
5.2.3.1
Subpicture
®
project is referenced in the Name text box by default.
).
button is used to export subtitle files.
button is used to import subtitle files.
The following setting options are available in the Subpicture area:
Font drop-down
menu
Font size drop-
down menu
B button
I button
U button
S button
Preview window
Changes the font for all inserted subtitles.
Changes the font size for all inserted su btitles.
Changes all inserted subtitles to bold.
Changes all inserted subtitles to italics.
Underscores all inserted subtitles.
Strikes through all inserted subtitles.
Shows how the subtitles are formatted.
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Nero Digital™ settings
Subpictures are image files that are placed over the background. They can be used to
create buttons, for example.
5.2.3.2
Name&Language
You can give all subtitles a name in the Name entry. The name of the Adobe® Premiere®
project is referenced in the Name text box by default.
You can use the Language drop-down list to choose the language for the subtitles.
5.2.4 Chapters
The Chapter area displays the chapters you have created.
5.2.5 Muxer
Convert
subtitles as
subpictures
check box
Color button
Converts all subtitles into subpictures when the box is
checked.
Changes the font color for all inserted subtitles.
The Muxer entry is used to make more settings for the encoding process.
The following setting options are available:
Interleave
audio and
video in
packets with
This synchronizes the audio and video tracks at the intervals
specified in the relevant text box.
duration of
check box
Auto-split file if
bigger than
check box
This automatically splits the output file after a particular file
size and creates a second file. The file size at which the
output file is split is entered in the text box.
Page 14
Nero Digital™ expert settings
6 Nero Digital™ expert settings
You should only change the expert settings if you are sufficiently familiar with the area of
video encoding, in particular MPEG-4 encoding.
Poorly selected settings can have a significant negative impact on the quality of the output
file.
6.1 MPEG-4 glossary
A number of terms are defined here to clarify the explanations of the options available in
expert mode:
AVC
ASP
B-Frame
B-VOP
CABAC
Data Compression
EPZS
GOP
H264
H263
I-Frame
I-VOP
Interlace
ISO
ITU
Keyframe
Advanced Video Coding. Corresponds to the H264 standard.
See H264.
Advanced Simple Profile. Corresponds to the H263 standard.
See H263.
Bidirectional coded Frame.
Uses only the difference information relative to the previous
and subsequent keyframes (I-frames). Because the complete
image information is not used, the degree of compression is
greater.
Bidirectional coded Video Object Plane (see B-Frame). VOP
is only referred to in the context of coding in the H263
standard.
Context Adaptive Binary Arithmetic Coding. Refers to a
process for arithmetically coding digital video data as part of
coding standard MPEG-4 AVC or H264.
Process whereby data is compressed so as to require less
storage space and shorter transmission times in data
networks.
Enhanced Predictive Zonal Search. An algorithm for motion
searching in video sequences.
Group Of Pictures. Interval from one I-frame to the next.
ITU standard for video encoding and compression.
Standard for video compression that takes a similar approach
to MPEG-2, but is much more efficient.
Intra-coded Frame. Contains the complete integral image
information for a frame.
Intra-coded Video Object Plane. See I-Frame. VOP is only
referred to in the context of coding in the H263 standard.
Horizontal skip process. Used when recording, processing,
and displaying images. Mainly used for displaying television
signals on receivers based on the CRT principle.
International Organization for Standardization.
International Telecommunication Union.
See I-Frame.
Page 15
Nero Digital™ expert settings
Macroblock
Matrix
Motion Estimation
MPEG-4
NC
P-Frame
P-VOP
Prediction
Quantization
Interference
RVLC
Keyframe
VOP
A macroblock describes 16x16 pixels and is the elementary
unit in the MPEG standard on which motion coding is also
based.
A matrix is a rectangular pattern whose elements are usually
numbers, although they can be other mathematical elements
such as variables of functions. It consists of m lines and n
columns.
In relation to quantization: the values in the matrix are factors
that control the value of the compression. The higher the
number the greater the compression.
Motion estimation/search.
An MPEG standard (ISO/IEC-14496) that describes the
procedure for video and audio compression, among other
things.
Video compression is divided into MPEG-4 AVC (see H264)
and MPEG-4 SP/ASP (see H263).
Not Coded.
Predictive Frame.
Uses only the difference information relative to the previous
and subsequent keyframes (I-frames). Because only the
difference information is used, not the complete image
information, the degree of compression is greater.
Predicted Video Object Plane. See P-Frame. VOP is only
referred to in the context of coding in the H263 standard.
Prediction/estimation.
In general: The creation of a digital signal from an analog
signal.
During video compression: Quantization controls the degree
of compression. It involves the reduction of the value range
through a division-type operation.
Interference in image or sound. Generally a disturbance with
a broad, unspecified frequency spectrum. It can thus be
interpreted as the superimposition of numerous oscillations or
waves of varying amplitude and frequency or wave length.
Reversible Variable Length Coding.
See I-Frame.
A video picture in the MPEG-4 SP/ASP context.
Page 16
Nero Digital™ expert settings
6.2 MPEG-4 profiles
MPEG-4 SP/ASP is mainly available in two different profiles, Simple Profile (SP) and
Advanced Simple Profile (ASP).
The functions are supported by the various profiles as follows:
Function Profile
I-frame x x
P-frame x x
B-frame – x
AC/DC prediction x x
4 motion vectors per
macroblock / unlimited
motion vectors
H.263 / MPEG quantization – x
Global motion
compensation
Interlace process – x
Various entries are available for selection in the Profile area in the navigation tree. The
entries under the MPEG-4 encoder main point are explained below (see
Simple
x x
– x
Advanced
Simple
MPEG-4 Encoder).
The option for changing settings depends on the selection made in the Nero Digital Profile
drop-down menu (see
out.
Nero Digital™ profiles). Unavailable selection options are grayed
6.3 Creating a new default profile for expert settings
To create a new default profile for the Nero Digital™ expert settings, proceed as follows:
1. Enter a name in the Name box.
2. Enter a description in the Description box.
3. Click on the Default button.
Î You have now created a new default profile for the Nero Digital™ expert settings. You
can now define the Nero Digital™ expert settings for your new default profile.
Page 17
Nero Digital™ expert settings
6.4 MPEG-4 Encoder
You can make the Nero Digital™ expert settings in the MPEG-4 Encoder entry.
6.4.1 Encoding Method
The Encoding Method entry allows you to choose between the Real-time encoding (1
pass) and High quality encoding (2 pass) settings.
Coding in a single pass may take less time, but it does not offer the same quality as coding
in two passes.
If coding in a single pass is selected, two fields are available, Min. quant. and Max. quant..
You can use these to set the range for the permitted quantization factor. This determines the
degree of compression for the output file.
Remember that while greater compression reduces the output, it also involves a loss of
quality.
For this reason you should never exceed a quantization factor of 31.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
6.4.2 Quality/Speed
The Quality/Speed entry allows you to make settings in relation to the quality and speed of
the coding process.
The Performance/Quality drop-down menu can be used to select defaults for the best
possible configuration of the options. When you choose Custom you can select the options
yourself. These options are explained below.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
6.4.2.1
Motion search
In the Motion search drop-down menu you can choose between None, EPZS (Enhanced
Predictive Zonal Search), and EPZS². These are algorithms for reducing image information
in P- and B-VOPs.
EPZS² produces the best results in this setting, but requires more time for encoding.
The None setting produces the lowest coding efficiency. For this reason it is not
recommended.
6.4.2.2
NC Prediction
You can use the NC Prediction drop-down menu to set the speed of the prediction of noncoded macroblocks.
If you choose Fast, an attempt will be made to use a fast process to extrapolate the current
macroblock from neighboring, non-coded macroblocks. However, the quality of the output file
is poorer.
The None setting delays the coding process because the non-coded blocks are not
Page 18
Nero Digital™ expert settings
predicted but are rather analyzed in detail. This produces the best possible quality.
The Normal setting is recommended as it is the middle ground.
6.4.2.3
6.4.2.4
6.4.2.5
6.4.2.6
Scene cut
If you check the Scene cut box, you can use the slider to set the sensitivity with which the
encoder detects scene changes. For efficiency, it inserts keyframes at these points whose
information is used by the P- and B-VOPs. This is necessary in scenes involving a lot of fast
movement in order to reproduce the details of the picture accurately.
We advise a central slider setting because inserting too many keyframes is inefficient.
Fast ME
Fast ME speeds up encoding by accelerating the estimation of motion.
Low/High noise
The Low/High noise setting requires you to judge for yourself whether your source features
minor or major interference. If your source does have such interference, you should check
the corresponding box. The encoder will then try to resolve the problems during encoding.
High B-VOP quantization
If you check the High B-VOP quantization box, you will increase the quantization of the BVOPs.
The increase in quantization will improve the compression of the output file, making it
smaller. However, this also means a reduction in quality.
6.4.2.7
6.4.2.8
6.4.2.9
This option is only relevant if B-VOPs are permitted in the Advanced entry (see
Rate distortion optimization
The Rate distortion optimization setting enables the encoder to guarantee the ratio
between quality and targeted compression level with automatic decisions.
Maximum MV range
The Maximum MV range drop-down menu allows you to use predefined values to set the
maximum range for motion vectors.
Psycho-visual quality level
The Psycho-visual quality level setting uses human perception patterns to achieve better
overall quality.
This means, for example, that the quality is better in the middle of the picture than at the
outer edges because the eyes tend to focus on the middle and do not notice slight blurring at
the edge. Because quality is "saved" at the edge, you can either improve overall quality or
achieve greater compression.
Advanced).
Page 19
Nero Digital™ expert settings
6.4.3 Advanced
You can make further settings relating to various areas of encoding in the Advanced entry.
These are explained below.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
6.4.3.1
6.4.3.2
6.4.3.3
6.4.3.4
Simple profile (QuickTime™ compatibility)
If you check the Simple profile box, a number of options in expert mode are grayed out and
cannot be changed. The output file is thus encoded in the MPEG-4 simple profile (see
MPEG-4 Encoder).
Quantization
The Quantization drop-down menu allows you to choose between H236 quantization and
MPEG quantization.
Select MPEG if you want to use your own quantization matrix or change the existing one.
If you do not want to do this, leave the setting at H263 quantization.
Pixel
You can choose between Half and Quarter Pixel in the Pixel drop-down menu.
Motion is then sought in quarter or half pixel steps (see
quarter pixels, the coding process takes longer, but the quality is better.
Spatial Prediction
The Spatial Prediction setting is used to encode macroblocks in correlation with
neighboring macroblocks. In other words, they are coded with difference information relating
to these neighboring macroblocks and on the basis of the probability of similarity. The
information from several intra-coded neighboring macroblocks is used to be able to predict a
macroblock more accurately.
Motion search). If estimation is in
6.4.3.5
6.4.3.6
6.4.3.7
Predicted VOP
The Predicted VOP setting enables encoding using P-VOPs.
Unrestricted motion vectors
If you check the Unrestricted motion vectors box, you allow the motion vectors also to
point to spots outside the frame.
This option improves coding efficiency at the edges of the frame.
4 motion vectors per macroblock
The 4 motion vectors per macroblock setting allows the encoder to divide the
macroblocks of 16x16 pixels into four 8x8 pixel macroblocks for the motion search. This
means that there are now four motion vectors instead of one.
This option improves the quality but slows down the encoding process.
Page 20
Nero Digital™ expert settings
6.4.3.8 Bidirectional VOP
The Bidirectional VOP setting enables encoding using B-VOPs.
6.4.3.9
6.4.3.10
Support of interlaced VOP
The Support of interlaced VOP setting is used to support the half frame or horizontal skip
process.
This process, which is used to display a TV picture in PAL standard, displays two half frames
in succession. As the frame is generated, only the odd lines from the output device are
displayed for the first half frame and, once this is complete, the second half frame is
generated from the even lines. The two frames are coded separately. The relatively high
refresh frequency means that the eye picks this up as a single frame.
This function is not supported by all hardware.
Global motion compensation
The Global motion compensation setting is an attempt to compensate for camera
movement. This is achieved by means of previously generated vector fields for the motion
vectors. The vector corrections required when the vector fields do not match are less
complex than the complete generation of a new vector field.
This setting requires a lot of time for relatively little increase in quality.
6.4.4 Keyframes
The Keyframes entry can be used to make settings for the keyframe intervals.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
6.4.4.1
Minimum/Maximum keyframe interval
The Minimum/Maximum Keyframe interval setting defines the maximum and minimum
limits for the GOP size.
Remember that the value for the largest interval may not be greater than 300, but should not
be set too low either because the coding efficiency at other locations can become poorer if
there are too many keyframes.
6.4.5 Error resilience
You can make the settings for better transferability in networks in the Error resilience entry.
Activating all of these tools would create a bitstream overhead, i.e. the video quality is
diminished with a fixed bit rate.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
Page 21
Nero Digital™ expert settings
6.4.5.1 Resync
In the Resync setting, the encoder does not encode a video picture as a whole, but rather
breaks it down into several independently decodable parts.
6.4.5.2
6.4.5.3
Part
The Part (Data Partitioning) setting enables the encoder to group the data from several
macroblocks according to header and difference information.
The background to this process is that it is assumed that the loss of difference information
would cause fewer visible disruptions that the loss of motion vectors, for example.
This is a useful option if you can transmit the video stream over several channels with
different error rates.
RVLC
The RVLC (Reversible Variable Length Coding) setting enables the encode r to produce
compressed frames so that the program skips to the end of the frame and encodes in
reverse if an error occurs while transmitting or saving. Reverse coding continues until the
encoder encounters the error again. This means that as much intact data as possible can be
used.
This setting enables the bitstream to be highly compressed, while the excellent recovery
options still allow an excellent quality to be achieved.
6.4.6 Matrices
You can edit the existing quantization matrices or upload your own matrices in the Matrices
entry.
The matrices define how the various frequencies are displayed in the macroblocks.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
6.4.6.1
6.4.6.2
Intra
The matrix in the Intra entry is responsible for the quantization of I-macroblocks because
these are intra-coded.
Inter
The matrix in the Inter entry is responsible for the quantization of P- and B-macroblocks
because these are inter-coded.
6.4.7 AVC Encoder
You can make settings for the AVC encoding of your data in the AVC (Advanced Video
Encoding) entry and its subentries.
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Nero Digital™ expert settings
6.4.7.1 Thread count
Nero Digital™ supports multi-core processors. If you have one of these, you can distribute
the encoding process over the required number of threads.
The Thread Count drop-down menu allows you to choose whether to allow the encoding
process to be performed by several threads. This means that you can use a multi-core
processor system to optimum effect
The number of processor cores used corresponds to the number of threads you have
selected.
6.4.8 Rate control
The Rate control entry allows you to make settings in relation to the bit rate mode and
quantization (see
6.4.9 General Settings
Encoding Method).
The General Settings entry allows you to make settings in relation to Decision quality, the
Motion vectors, and the GOP properties.
This setting option is only available if you have selected an MPEG-4 SP/ASP profile in the
Nero Digital™ profile.
6.4.10 Decision quality
The Decision quality slider specifies the quality of the output file in relation to the time
expended.
High Quality offers the best quality with the longest encoding period.
High Speed requires the shortest coding time but offers the poorest possible quality.
It is advisable to choose a middle value in the Best range.
6.4.10.1
6.4.10.2
Motion vectors
See Maximum MV range.
GOP properties
A GOP (Group Of Pictures) is an interval from one I-frame to the next.
Maximum reference frames
The number in the Maximum reference frames text field indicates from how many
frames a P- or B-frame may obtain its information.
If B-frames are permitted, the number must be at least 2.
Maximum GOP size
The number in the Maximum GOP size text field indicates the number of frames
permitted between I-frames.
Maximum B-frames
The number in the Maximum B-frames text box indicates the maximum number of
consecutive B-frames permitted in a GOP.
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Nero Digital™ expert settings
6.4.11 Encoding Tools
You can make the settings for the encoder process in the Encoding Tools entry.
This setting option is only available if you have selected an MPEG-4 AVC profile in the
Nero Digital™ profile.
6.4.11.1
6.4.11.2
6.4.11.3
6.4.11.4
6.4.11.5
CABAC
CABAC (Context Adaptive Binary Arithmetic Coding) is a particular coding method. Instead
of bit sequences of variable length, it uses more effective arithmetic coding to achieve a 10
to 20% data rate saving.
This is only used with MPEG-4 AVC
Bidirectional prediction
The Bidirectional prediction setting permits encoding using B-frames.
Macroblock partitions
The Macroblock partitions setting allows macroblocks to be split (see 4 motion vectors per
macroblock
).
Weighted prediction
The Weighted prediction setting allows reference frames to be weighted when predicting
motion. This increases coding efficiency, particularly in the case of cros s-fading.
8x8 Transform
The 8x8 Transform setting allows the encoder also to use an 8x8 transformation as an
alternative to the standard 4x4 transformation (see
This setting enables better compression with HD resolutions in particular.
4 motion vectors per macroblock).
6.4.11.6
Deblocking options
The Deblocking options setting operates like a soft focus on the sharp edges of the
macroblocks. You can use the slider to change the intensity of this effect.
6.4.12 Visual Enhancement
The settings in the Psycho visual quality level entry use human perception patterns to
achieve better overall quality.
This means, for example, that the quality is better in the middle of the picture than at the
outer edges because the eyes tend to focus on the middle and do not notice slight blurring at
the edge. Because quality is "saved" at the edge, you can either improve overall quality or
achieve greater compression.
This means that you can achieve greater compression without any appreciable loss of
quality.
This setting option is only available if you have selected an MPEG-4 AVC profile in the
Nero Digital™ profile.
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Nero Digital™ expert settings
6.4.12.1 Picture Level
The Picture Level setting takes account of human perception so as to achieve better
compression for individual video frames at particular points in the video.
6.4.12.2
6.4.12.3
6.4.12.4
Macroblock Level
The Macroblock Level setting takes account of human perception so as to achieve better
compression for individual video frames in particular areas of the picture.
Advanced
The Advanced setting provides more ways to achieve higher compre ssion, however these
may be evaluated by different viewers in different ways.
Enhanced Chroma Prediction
Traditionally, only brightness information was used for video compression, enabling
compression decisions to be made in the encoder.
The Enhanced Chroma Prediction setting includes extensive color information in these
decisions, making for better compression.
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List of figures
7 List of figures
Fig. 1: Marker window for chapters....................................................................................................................8
Fig. 2: Marker window for subtitles....................................................................................................................9
Page 26
Index
8 Index
Marker 8
A
ASP 15
AVC 15
B
Bit rate 13
Setting 12
C
CABAC 15
Comments box 8
Contact 28
MPEG-4
AVC 11
SP/ASP 11
Multi-Core-Prozessor 23
Muxer 14
N
Nero Digital Expert settings 15
Nero Digital Profile
copying 12
Selecting 11
Number of channels 13
E
Export 10
Export process 10
H
H263 15
H264 15
HDTV 11
I
Importing
Video file 8
Interference 16
Interlace 15
iPOD Video 11
P
Profile
Advanced Simple 17
Simple 17
Profiles 11
Q
Quantization 16
S
Scan rate 13
Subpicture 13
Subtitle 13
Subtitle files
Exporting 13
Importing 13
K
Keyframe 16
T
Time line 8
L
Language
Audio track 13
Subtitle 14
Video track 12
V
VOP
Bidirectional 15
Intracoded 15
predicted 16
M
Macroblock 16
Page 27
Contact
9 Contact
Nero Digital™ Plug-in for Adobe
Nero AG
Im Stoeckmaedle 18
76307 Karlsbad
Germany
Web:
Help:
E-mail:
Fax:
®
Premiere® is a product of Nero AG.
www.nero.com
http://support.nero.com
techsupport@nero.com
+49 724 892 8499
Copyright © 2007 Nero AG and its licensors. All rights reserved.
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