4.1

Chapter 4 Advanced adjustments 47
QuickTime Movie
Many of the built-in settings in the Settings pane use the QuickTime Movie format. This format
encodes video les for many uses. You can also create custom settings that use the QuickTime
Movie transcoding format.
The properties of built-in and custom settings that use this format are located in the General,
Video, and Audio inspectors. These properties are described below.
Important: When you add a setting (or a destination that includes settings) to a job, Compressor
analyzes the source media and then automatically assigns the most appropriate setting
properties (based on the setting’s transcoding format and the characteristics of your source
media le). It’s recommended that you use the automatically assigned setting properties.
Setting summary
Displays the setting name and transcoding format, as well as an estimated output le
size. When you add a setting to a job or change the setting’s properties, this summary
automatically updates.
General properties
•
Name: Displays the name of the setting.
•
Description: Displays the description of the setting.
•
Extension: Displays the extension of the output le (.mov).
•
Allow job segmenting: If you’ve set up distributed processing, select this checkbox to have
Compressor process the output le using your shared computer group. For more information,
see Transcode batches using other computers on page 101.
•
Default location: Select an item from the pop-up menu to set the default save location for
transcoded les.
•
Format: Use the pop-up menu to set whether the output includes video and audio, video only,
or audio only.
•
Optimize for network use: Select this checkbox to create a le that will start playing after only a
small portion of the le has been downloaded from the network.
Retiming
This section contains one property:
•
Set duration to: Sets the processing algorithm used to adjust the frame rate during transcoding.
Select one of the following options:
•
[Percentage] of source: Modies the output clip’s speed by a percentage of the source clip’s
speed. Enter a value in the percentage eld or choose a preset value from the adjacent
pop-up menu (with a downward arrow).
•
[Total duration]: Sets the duration of the clip. Enter a timecode duration in the eld or click
the arrows to increase or decrease the time.
•
So source frames play at [frame rate] fps: Nondestructively changes the playback speed of the
clip, without discarding frames or creating new frames. This setting has no eect unless the
“Frame rate” value in the Video inspector is dierent than the source le’s frame rate. For
example, if you add a 10-second source le with a frame rate of 24 fps to Compressor, set the
“Frame rate” property in the Video inspector to 25 fps, and then select “So source frames play
at 25 fps” in the General inspector, the duration of the transcoded clip (at 25 fps) is 9 seconds
and 15 frames.
For more information, see Retime video and audio output on page 71.
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