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I have a 30 minute video. I want to skip 3 seconds every 30 seconds. And continue to the end of the video. And it connects all 30s video together Example: 00:00:00 to 00:30:00 + 00:33:00 to 00:63:00 + 00:66:00 to 00:96:00 ..... so much for the ending video Please help me write it

Kion Dung
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  • Possible duplicate of [Cutting the videos based on start and end time using ffmpeg](https://stackoverflow.com/questions/18444194/cutting-the-videos-based-on-start-and-end-time-using-ffmpeg) – Sinto Jun 09 '18 at 03:51
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    I do not think so. I want to cut 30s and skip 3 s then continue to cut 30s like that and connect that video together – Kion Dung Jun 09 '18 at 04:00
  • You cut the required time from that, after that you have to skip 3 secs after the next start time & has to proceed. – Sinto Jun 09 '18 at 04:03
  • it's correct. as in the example above. I want to take from 0 seconds to 30 seconds and connect with 33s to 63s like that until the end of the video – Kion Dung Jun 09 '18 at 04:10

1 Answers1

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The select filter is the most convenient for this,

ffmpeg -i in -vf "select='lt(mod(t,33),30)',setpts=N/FRAME_RATE/TB" -af "aselect='lt(mod(t,33),30)',asetpts=N/SR/TB" out

The video and audio select filters keep the first 30 seconds out of every 33 seconds. If your file doesn't have audio, drop the -af .. option.

Gyan
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