Hi, I am trying to remove parts of a video (with audio) using the select filter. I constructed this command to remove seconds 20-25:
(newlines only for readability) ffmpeg -i input.mkv -vf "select='1-between(t,20,25)', setpts=N/FRAME_RATE/TB" -af "aselect='1-between(t,20,25)', asetpts=N/SR/TB" output.mkv This works great, except that when I use multiple "between" clauses to discard multiple sections, audio and video will start to get out of sync. After changing the command to: ffmpeg -i input.mkv -vf "select='1-between(t,20,25)'" -af "aselect='1-between(t,20,25)'" output.mkv this doesn't happen anymore, but now the video is glitchy: Parts that should be gone sort of remain in the video timeline, but are skipped. Specifically, for the following command executed on a 59 minute long video, vlc will jump from 6:38 (second 398s) to 9:59 (second 599), but the video will still be truncated to 25:00 (1500 seconds) correctly: ffmpeg -i input.mkv -vf "select='1-between(t,20,25)-between(t,100,200) -between(t,220,300)-between(t,400,600)-between(t,750,800) -between(t,820,860)-between(t,880,900)-between(t,1000,1200) -gt(t,1500)'" -af "aselect='1-between(t,20,25)-between(t,100,200) -between(t,220,300)-between(t,400,600)-between(t,750,800) -between(t,820,860)-between(t,880,900)-between(t,1000,1200) -gt(t,1500)'" output3.mkv Is there a way to cut up a video into multiple parts using the select filter without having the video and audio go out of sync or having glitchy video playback? If not, what is the best alternative? _______________________________________________ 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".
