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How can I make exact cut from a video using FFmpeg? Both of these commands add few seconds in front of desired part:

ffmpeg -ss [HH:]MM:SS[.m...] -i input -to [HH:]MM:SS[.m...] -c copy -copyts output
ffmpeg -ss [HH:]MM:SS[.m...] -i input -t [HH:]MM:SS[.m...] -c copy -avoid_negative_ts 1 output
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    Only transcoding can be assured to deliver closest to a precise cut.
    – Gyan
    Feb 15, 2018 at 13:25
  • @Mulvya, what's a transcoding? Changing encoding? Feb 15, 2018 at 14:21
  • Yes - recompressing the video.
    – Gyan
    Feb 15, 2018 at 14:31

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