Bouke / Videotoolshed <bo...@videotoolshed.com> writes: >> On 21 Dec 2021, at 19:37, Cecil Westerhof via ffmpeg-user >> <ffmpeg-user@ffmpeg.org> wrote: >> >> Cecil Westerhof via ffmpeg-user <ffmpeg-user@ffmpeg.org> writes: >> >> After some experiments I solved it by putting -ss and -to behind -i >> and not forgetting to alter the between values. >> But this takes about a third more time. >> Is there be a better solution? >> >> I am now using: >> ffmpeg -y \ >> -i input.mp4 \ >> -ss 00:26:05 \ >> -to 00:44:04 \ >> -vf " >> drawbox=enable='between(t, 1565, 1566.6)': >> color = black : >> w = in_w : >> h = in_h : >> thickness = fill >> " \ >> -acodec copy \ >> -vcodec libx264 \ >> -crf 23 \ >> -preset veryfast \ >> output.mkv > > I think you are inserting black, not overlaying (blanking) the > video. Try -vf overlay.
If I look at overlay, it says: Overlay one video on top of another. I only want to block video for a short while because someone who should not be visible is visible. > With -ss before input, it will do a faster search, you might have to do > a bit of math on the enable= range, but that will become very obvious > with a small test. The problem is that (in this case, I have used it without problems) with -ss before the video there is 27 seconds of (hidden) audio. If the video started 27 seconds I could understand it. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".