4.2

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 effect
unless the “Frame rate” value in the Video inspector is
different than 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, 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 .
Video properties
Frame size: Use the pop-up menu to set the frame size
( ) for the output file.
Pixel aspect ratio: Use this pop-up menu to set the pixel
aspect ratio (the ratio between the image frame width and
height). You can also modify the aspect ratio of the output file
using cropping and padding properties. For more information,
see .
Frame rate: Use this pop-up menu to set the playback rate
(the number of images displayed per second) for the output
file. For more information, see .
Field order: Use the pop-up menu to set the output scanning
method (either the field dominance or a conversion to
progressive scanning). There are four options:
Same as Source: Maintains the same scanning method
used by the source media file.
Retime video and audio
resolution
Modify frame size overview
Frame rate options overview