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Table Of Contents
GOP length: 15 frames for NTSC; 12 frames for PAL
These settings are fixed and apply to all Compressor MPEG-1 video output files. See GOP
Tab for information about Group of Pictures (GOP) settings. See Quality Tab for information
on the encoding mode.
The MPEG-1 output files can have I-frames forced on specific frames by placing
compression markers on them. These markers can be added to the source media file
using Final Cut Pro or can be added manually in the Preview window. See Working with
Markers and Poster Frames for more information.
The MPEG-1 format does not support named chapter markers.
About the MPEG-1 Encoder Pane
This section contains detailed information about the various tabs within the MPEG-1
Encoder pane of the Inspector window. You make your MPEG-1 settings using these tabs,
by either modifying an existing setting or creating a new setting in the Settings tab.
The MPEG-1 Encoder pane opens with the default Video tab on top and contains the
following items.
Extension: This field displays the MPEG-1 file extension (.mpg) automatically after the
MPEG-1 output format is chosen from the File Format pop-up menu or the (+) pop-up
menu in the Settings tab. The extension changes to the video-only extension (.m1v) if
the Audio tab is disabled or the audio-only extension (.m1a) if the Video tab is disabled.
Allow Job Segmenting: This checkbox allows you to turn off job segmenting. It is relevant
only if you are using Compressor with distributed processing and with multi-pass
encoding. For more information, see Job Segmenting and Two-Pass or Multi-Pass
Encoding.
183Chapter 17 Creating MPEG-1 Output Files