On 2021-12-21 08:14 pm, Cecil Westerhof via ffmpeg-user wrote:
I have the recording of a zoom meeting where I need to cut out a
portion from and the first little bit has to be blacked out.
I use the following command:
ffmpeg -y \
-ss 00:26:05 \
-to 00:44:04 \
-i input.mp4 \
-vf "
drawbox=enable='between(t, 0, 1.6)' :
color = black :
w = in_w :
h = in_h :
thickness = fill
" \
-acodec copy \
-vcodec libx264 \
-crf 23 \
-preset veryfast \
output.mkv
This creates a seemingly correct file, with one little problem: the
time starts at 00:00:27 and ends at 00:18:26. (As displayed by the
player mpv.)
This should work. Where are the keyframes in the video stream?
Regards,
Gyan
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