4.5

65Compressor User Guide
• So source frames play at [frame rate] fps: Nondestructively changes the playback
speed of the clip without discarding frames or creating new frames. This property has
no effect unless the “Frame rate” value in the Video inspector is different from the
source file’s frame rate. For example, if you add a 10-second source file 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
resulting duration of the transcoded clip (at 25 fps) will be 9 seconds and 15 frames.
For more information, see Retime video and audio using Compressor.
Video properties
• Frame size: Use the pop-up menu to set an automatically calculated frame size
(resolution) for the output file. (Available options vary, depending on other settings in
the Video Properties area.) See Intro to modifying frame size in Compressor.
• Pixel aspect ratio: Displays the ratio between the encoded width and the display width.
• Frame rate: Use this pop-up menu to set the playback rate (the number of images
displayed per second) for the output file. See Retiming options in Compressor.
• Field order: Displays how frames are scanned (progressive, top first, or bottom first),
based on the resolution option chosen in the Format pop-up menu (described below).
• Color space: Use this pop-up menu to convert the source media to a new color space.
To have Compressor choose the best color space based on the applied setting, Choose
Automatic. (Depending on the compression method you choose, you may be able to
transcode the video to wide color gamut. See Intro to wide color gamut and HDR in
Compressor.)
• RAW to log: Use this pop-up menu to select how ProRes RAW conversion is done.
Choose Automatic to allow Compressor to choose the conversion method. You can
also choose a manual setting to override the default. This option is available only if
the source is ProRes RAW.
• Camera LUT: Use this pop-up menu to select the camera lookup table (LUT) applied
to the source. Select a custom LUT to transform your video from one color space to
another. This setting is enabled if the source is ProRes RAW and if “RAW to log” is
set to a value other than None. This setting is also enabled if “Camera log” in video
properties in the Job inspector is set to a value other than None.
• Codec: Use this pop-up menu to choose a transcoding method.
• Start timecode: Use this pop-up menu to set a forced timecode start point for the
output file. The Automatic option uses the default timecode of the source file (typically,
00:00:00:00). Other options set the timecode start to 1 hour or 10 hours.
• Drop frame: Available when “Frame rate” is set to 29.97 fps or 59.94 fps and “Start
timecode” is set to 00:00:00:00, 01:00:00:00 or 10:00:00:00. Select this checkbox
to force the timecode to stay in sync with real-time duration during playback.