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I am trying to find the best way to automatically concatenate a large number of files that have been recorded with an overlap within them. In the process of 'glueing' the video files together, to get a smooth playback, I need to strip 5 frames from the end (or from the beginning) of each clip.

This post suggests a few ways of concatenating the files, and this post on processing a timelapse video has an excellent advise on using filters for truncating media. But I am wondering whether I could avoid re-encoding at all? All files are in the same format.

The ideal answer would include an ffmpeg command.

Thank you in advance!

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    See video.stackexchange.com/q/25096 – Gyan Nov 17 '20 at 6:54
  • Thank you, @Gyan, that is very close. I looked through the manual and couldn't find a way to specify a relative ("from beginning to 3 frames from the last frame") way of defining the outpoint. Is that possible if you don't know the duration of the clip? – Tony Sepia Nov 18 '20 at 14:28
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    No, outpoint has to be measured in seconds from start. – Gyan Nov 18 '20 at 14:47
  • OK, thank you! Will use workarounds and assumptions ;) – Tony Sepia Nov 18 '20 at 14:49

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