User Guide

10
Enhanced MPEG-2 Outputs
There have been several enhancements to the MPEG-2 output format.
Stream Usage Setting
To make it easier to create MPEG-2 outputs targeted at specific devices, the MPEG-2
output format now includes a Stream Usage pop-up menu that you can use to choose
one of the following MPEG-2 formats:
 Generic: The Generic option allows you complete access to all the MPEG-2 settings.
This is the only option that supports the MPEG-2 640 x 480 video format in addition
to the SD and HD video formats. It is also the only option that supports creating
transport and program streams. It supports the complete bit-rate range of 2.0 Mbps
to 40.0 Mbps.
 SD DVD: The SD DVD option restricts the encoding options to those allowed by the
SD DVD specification. These include the NTSC and PAL video formats and a bit-rate
range of 2.0 Mbps to 9.0 Mbps.
 Blu-ray: The Blu-ray option restricts the encoding options to those allowed by Blu-ray
video discs. These include the SD and HD video formats and a bit-rate range of
10.0 Mbps to 40.0 Mbps.
 HD DVD: The HD DVD option restricts the encoding options to those allowed by the
HD DVD specification. These include the SD and HD video formats and a bit-rate
range that changes depending on the selected video format.
 For HD video formats the bit-rate range is from 10.0 Mbps to 29.4 Mbps.
 For SD video formats the bit-rate range is from 2.0 Mbps to 15.0 Mbps.
Support for Program Streams
In addition to creating elementary and transport streams, Compressor now supports
creating program streams.
 Elementary streams: These streams contain only one MPEG-2 content channel and no
audio. Elementary streams are required if you intend to use your MPEG-2 encoded
video as a DVD Studio Pro asset.
 Transport streams: These streams can contain several MPEG-2 content channels and
associated audio. All the channels are multiplexed together, allowing the receiver to
choose which to play back. Compressor supports creating single-channel transport
streams that can optionally include associated audio.
Transport streams can also recover from interruptions during playback, making them
ideally suited for broadcast and streaming applications where noise or network
congestion can lead to interruptions.
 Program streams: These streams contain only one MPEG-2 content channel and its
associated audio. Program streams require an error-free delivery method and are
primarily used for storage or processing within a computer.