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Cut a keyframe-aligned clip of an MP4 or MOV file, without re-encoding.
coreav clip --start TIME [--end TIME] INPUT OUTPUT cuts a clip of an MP4 or MOV file into a new MP4 file by stream copy. The clip starts at the latest keyframe at or before --start, so nothing has to be re-encoded, and ends at --end or at the end of the video. It keeps one video stream and one audio stream, the first of each unless you name them.
The summary (coreav.clip/1) on standard output says where the clip starts after the start snaps to a keyframe.
coreav clip --start 1 --end 3 input.mp4 clip.mp4
coreav clip --start 90 --audio none input.mp4 - > clip.mp4
Cut a keyframe-aligned clip of an MP4/MOV file to MP4, without re-encoding
Usage: coreav clip [OPTIONS] --start <TIME> <INPUT> <OUTPUT>
Arguments:
<INPUT> The file to clip
<OUTPUT> Where to write the clip: a new file, or `-` for standard output
Options:
--start <TIME> Start in seconds (for example `12.5`). The clip starts at the latest keyframe at or before it
--end <TIME> End in seconds; the end of the video when absent
--video <STREAM> The video stream index (default: the first video stream)
--audio <STREAM|none> The audio stream index, or `none` (default: the first audio stream)
--allow <CODEC> Codecs to accept, comma separated, as for `coreav probe`
--strict Reject the whole file when a stream's codec is not allowed
--force Overwrite OUTPUT if it exists (a symbolic link is replaced, not written through; the new file keeps the old one's permissions)
-h, --help Print help