Apple Compressor 3 - Manual (Page 321)

• Drag the playhead to where you want transcoding to begin and click the Set In Point
button.
Playhead
Out point
In point
Set In Point button Set Out Point button
4 Do one of the following:
• Drag the Out point to the appropriate location.
• Drag the playhead to where you want transcoding to end and click the Set Out Point
button.
The only segment of the media file that will be transcoded is between the two points
that you set. The rest of the clip will not be transcoded.
Important: When you use the markers to specify a segment of the source media file to
transcode, they apply to all targets assigned to the file’s job. You can add a source media
file multiple times to a batch, creating multiple jobs, and set the In and Out points
differently in each job.
Adding Markers to a Clip
Compressor can import and create several different kinds of markers. In addition,
Compressor can import entire lists of chapter markers.
Output File Formats That Support Markers
Not all output file formats support markers. Following is a list of those that do support
them.
• MPEG-2
• MPEG-4 when configured for podcasting (audio-only with the “Allow Podcasting
information” checkbox selected)
• QuickTime Movies
321 Chapter 26 Using the Preview Window