Tuesday, June 5, 2007

Canopus ProCoder 2.0

Canopus ProCoder 2.0

Introduction
High-speed car chases, explosions and cherished memories - just a few of the reasons video professionals choose Canopus ProCoder 2.0 for the highest quality video conversion and repurposing. In a production environment, ProCoder 2.0 performs video magic by providing important automation tools such as watch folders, batch processing and simultaneous output while still providing powerful customization and filter features. Output an AVI animation from a 3D application, convert it to QuickTime DV for editing in Final Cut Pro, then convert the output to NTSC and PAL MPEG-2 for DVD authoring and distribution worldwide - ProCoder is there between every step of the process to ensure video quality is preserved for archiving, broadcast and any other use of video. In a multi-format digital world, ProCoder bridges the gaps between formats quickly and easily.
Thank you for purchasing ProCoder. We hope you find ProCoder's powerful features and easy-to-use interface helpful in your daily workflow.
If you have any questions, comments or suggestions about ProCoder, please let us know. In the unlikely event that you have difficulty using or installing ProCoder, please refer to the rest of this manual. If you still have trouble or would rather speak to a real person, Canopus Technical Support staff are ready to assist you during support hours.
Procoder Reference
MPEG Target
Common Options
See Target Common Options
MPEG-specific options
Video-VOB Output
• Use Marker Point if exist
Enable this option to use marker points as chapter points when ProCoder is launched from an editing application. If this is option enabled, marker points from the application providing data to ProCoder will be used for chapter point creation instead of the specified Chapter Method. If this option is disabled, or no marker points are received from the application providing data, chapter points will be created following the specified Chapter Method. This option is only available when the Stream Format is set to DVD(VOB Files).
• Chapter Method
Sets the chapter creation method. This option is only available when the Stream Format is set to DVD(VOB Files).
• Periodic - Sets a chapter point at the specified chapter interval.
• No Chapter Point No chapter points are set.
• Chapter Interval(mins.)
Sets the chapter interval in minutes. For example, if the chapter interval is set to 5, a 13-minute source will have 3 chapter points set at the start, 5 minutes and 10 minutes. This option is only available when the Stream Format is set to DV(VOB Files).
Stream
• Stream Format
The Stream Format specifies the type of MPEG stream to output. Different stream types have different constraints.
• Video CD - Create VideoCD (VCD) compliant output.
• SVCD - Create Super VideoCD (SVCD) compliant output.
• DVD(MPEG Program/Elementary Stream) - Create DVD compliant output for authoring.
• DVD(VOB Files) - Create DVD VOB compliant output for burning directly to DVD.
• HDV HD-1 Mode - Create HDV compliant output compatible with JVC's GR-HD1 and JY-HD10 HD camcorders.
• Generic ISO MPEG stream - Create a generic ISO compliant MPEG output.
• Stream Type
Select the stream type depending on your application requirements. Available stream types depend on the selected Stream Format.
• MPEG-1 System Stream - Output as a multiplexed stream with audio and video.
• MPEG-2 Program Stream - Output as a multiplexed stream with audio and video.
• MPEG-1 Elementary Stream - Output as separate audio and video elementary streams.
• MPEG-2 Elementary Stream - Output as separate audio and video elementary streams.
• MPEG-2 Transport Stream - Output as a multiplexed transport stream with audio and video.
Video
• Video Standard
MPEG files for broadcast handle NTSC and PAL formats differently. Set the Video Standard here. This option also affects the available frame sizes.
• Quality/Speed
The Quality/Speed setting determines the quality vs speed trade-off the encoder uses.
• High Speed - Optimize encoding for the highest speed.
• High Quality - Balance encoding speed versus quality.
• Highest Quality - Optimize encoding for the highest quality.
• Mastering Quality - Perform all encoding optimizations to produce the absolute best quality at the specified bitrate setting without regard to encoding speed. This option should not be used for performance benchmarking as it is an exhaustive process that can take 10-20 times longer than the other modes.
• Bitrate Type
Select the bit rate control type here. The available rate control types depend on the selected Stream Format.
• CQ (Constant Quality) - Encodes to achieve constant quality, varying bitrate up to the specified maximum.
• VBR (Varible Bitrate) - Encodes using variable bitrate. The specified video bitrate defines the base or average bitrate.
• CBR (Constant Bitrate) - Encodes using a constant average bitrate. Quality may vary depending on the complexity of the source footage.
• Number of passes
For VBR encoding, select 1 pass or 2 pass encoding.
• 1 pass - Single-pass VBR encoding varies the bitrate on-the-fly, starting at the specified bitrate, increasing toward the specified maximum in complex segments and decreasing toward the specified minimum in less complex segments. In general, single-pass VBR output will be as-large or larger than CBR output at the same video bitrate.
• 2 pass - Two-pass VBR performs an analysis pass before the encoding pass. The analysis pass determines the best bit allocation for the encoding pass. The actual bitrate varies between the specified minimum and maximum bitrates. The increases and decreases in bitrate are balanced to keep the average bitrate to the specified video bitrate.
• Max Bitrate(kbps)
Specifies the maximum bitrate in thousands of bits per second for non-CBR encoding. The encoded bitrate will not exceed the maximum bitrate.
• Min Bitrate(kbps)
Specifies the minimum bitrate in thousands of bits per second for non-CBR encoding. The encoded bitrate will not drop below the minimum bitrate.
• Quantization Level
The Quantization Level determines the picture quality for CQ encoding. Higher quantization levels provide better picture quality but require more bits to encode.
• Reservoir Buffer Size(KB)
Valid only in 1-pass VBR mode. The output file size is at least [average bitrate] * [duration] - [Reservoir Buffer Size].
• Expense Buffer Size(KB)
Valid only in 1-pass VBR mode. The output file size is at most [average bitrate] * [duration] + [ExpenseReservoir Buffer Size].
• Profile/Level
Determines the profile and level compliance of the MPEG output. The profile and level impose restrictions on various parameters in order to guarantee compatiblity with MPEG hardware devices.
• Put Sequence Headers on each GOP
Enable this option to add sequence headers at each GOP. Some applications require sequence headers at every GOP.
• Aspect Ratio Code
The Aspect Ratio Code tells the decoder what the intended display frame size is.
• VBV Buffer Size(KB)
Specifies the video buffer verifier size in kilobytes. This is used by the encoder to ensure the stream can be properly decoded by hardware players.
• Max GOP size
Sets the maximum GOP (Group Of Pictures) size. Larger GOPs provide better compression while smaller GOPs provide faster access.
• GOP Structure
Specifies the maximum distance between I and P frames, which determines the GOP (Group Of Pictures) structure.
• Automatic - Sets the GOP structure automatically based on the content.
• I-Frame only - Creates output without P and B frames.
• 1 frame (IPPP ...) - Creates output with a maximum of 1 frame from I to P frames.
• 2 frames (IBPBPBP...) - Creates output with a maximum of 2 frames from I to P frames.
• 3 frames (IBBPBBP...) - Creates output with a maximum of 3 frames from I to P frames. This is the standard for DVD-compliant MPEG streams.
• Picture Structure
The compression process can compress interlaced fields separately or combined as a frame to improve efficiency. This option sets the picture structure for the compression process. This is does not affect the interlacing mode of the output.
• Always Field- Always compress interlaced fields separately. This option should be avoided except in special circumstances.
• Always Frame - Always compress interlaced fields together as frames. This method is compatible with all known DVD players.
• Automatic - Selects the optimal mode for each frame. The output may not play correctly in all players.
• Use Closed GOP
Enable this option to encode closed GOPs. Closed GOPs do not allow prediction between frames at the ends of GOPs. Some DVD-authoring software requires Closed GOPs, as does multi-angle DVD content.
• Chroma Format
For profiles and levels that support multiple color sampling formats, select the desired format here.
• Intra DC Precision
The DC Precision determines how many bits are used for the coefficients of the Discrete Cosine Transform function. If you have very complex footage, increaseing the number of bits can help improve the video quality...
• Use Strict GOP bitrate control
Enable this option to use strict bitrate control in each GOP. Some applications require that the GOP bitrate does not fall below the minimum. With this option enabled, padding bits will be inserted into the GOPs if necessary to adhere to the minimum rate.
• Create DVD Compatible Stream
Enable this option to add extra checks to ensure the stream is compatible with certain PAL DVD players. It is recommended to leave this box checked.
Audio
• Audio Stream Type
Select the audio stream type here. Elementary streams and VOB file output support both MPEG audio and PCM audio.
• Error Protection
Enable this option to add CRC error checking data into the audio stream. Some applications require error checking data.
• Copyright Flag
Enable this option to indicate the audio is copyrighted. The flag is informational.
• Original Flag
Enable this option to indicate the audio is an original work. The flag is informational.
• Emphasis
Select whether the audio was recorded with emphasis. This is used by the decoder to restore the audio to its original sound. Emphasis was frequently used for phonodisc recordings.
• None - The audio was not recorded with emphasis and no de-emphasis is required on playback.
• 50/15 - The audio was recorded with 50/15 emphasis and de-emphasis is required on playback.
• CCITT.J17 - The audio was recorded with CCITT.J17 emphasis and de-emphasis is required on playback.
Notes
MPEG output must have a width that is an even multiple of 16 and a height that is an even multiple of 8.

DVD
The Wizard describes and gives advice for the DVD settings. However, some settings are described in more detail below.
Broadcast Format
Set-top DVD players usually support NTSC or PAL format. You should choose the broadcast format used in the country of your viewer for best results.
Computer-based DVD players can usually play both formats, but output to a television may require a the broadcast format as the television.
DVD File Type
ProCoder provides three types of DVD output:
• VOB to burn directly to DVD
• MPEG-2 Program Stream (.m2p) file for DVD authoring
• MPEG-2 Elementary Stream (.m2v) and audio files for DVD authoring
The appropriate choice depends on your situation.
• If you do not intend to add interactivity such as menus or subtitles to your DVD, the VOB to burn directly to DVD option is the most convenient. After creating the VOB file, you can use DVD-burning software to create a DVD-Video disc with the VOB file.
Note that some DVD-burning software cannot create DVD-Video discs while others require specific options to be set. Check the documentation for you DVD-burning software for more information.
• If you intend to use DVD authoring software that accepts MPEG-2 Program streams to create your DVD, the MPEG-2 Program Stream (.m2p) file for DVD authoring option is the appropriate choice.
• If you intend to use DVD authoring software that accepts MPEG-2 Elementary streams and separate audio files to create your DVD, or if you intend to alter or recompress the audio before putting it on the DVD, the MPEG-2 Elementary Stream (.m2v) and audio files for DVD authoring option is the appropriate choice.
DVD Encoding Selection
2-pass Variable Bitrate is most effective when there are varying segments of low motion and high motion in your footage.
DVD Duration
The more time you put on a single disc, the lower the video quality will be. If you are having unsatisfactory results, try reducing the amount of time on a disc.
DVD Optimization
Choose Optimize for Quality unless you are in a time-critical situation.