Losslessly trim (in time) videos with FFmpeg

Trim from time to end of video

(discard beginning of video) In this examples, starting at 58 seconds.

ffmpeg -i in.mp4 -ss 00:00:58 -c copy out.avi

Trim from start to specified end time

In this example from 00:58 to 1:10.

ffmpeg -i in.mp4 -ss 00:00:58 -t 00:00:12 -c copy out.avi

re-encode losslessly

ffmpeg -i in.mp4 -ss 00:00:58 -t 00:00:12 -c:v ffv1 out.avi

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