Use the -ss
and -t
options:
ffmpeg -i input -t 00:15:00 -codec copy output
ffmpeg -ss 00:15:00 -i input -codec copy output
From the FFmpeg documentation:
-ss position (input/output)
When used as an input option (before "-i"), seeks in this input
file to position. Note the in most formats it is not possible to
seek exactly, so ffmpeg will seek to the closest seek point before
position. When transcoding and -accurate_seek is enabled (the
default), this extra segment between the seek point and position
will be decoded and discarded. When doing stream copy or when
-noaccurate_seek is used, it will be preserved.
When used as an output option (before an output filename), decodes
but discards input until the timestamps reach position.
position may be either in seconds or in "hh:mm:ss[.xxx]" form.
-t duration (output)
Stop writing the output after its duration reaches duration.
duration may be a number in seconds, or in "hh:mm:ss[.xxx]" form.
-to and -t are mutually exclusive and -t has priority.
The example uses -codec copy
to use stream copy mode instead of re-encoding.
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