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I'm trying to copy the first minute of an mp4 file, but getting a strange result in which I try to play the file output from ffmpeg and the first 5 secs are missing!

I have tried using the following command:

ffmpeg -i The\ Big\ Fight\ \(1972\).mp4 -ss 0 -t 30 -c copy fight.mp4

as well as this command:

ffmpeg -i The\ Big\ Fight\ \(1972\).mp4 -acodec copy -vcodec copy -ss 0 -t 00:0:30 fight.mp4

both result in the video starting to play at 05s, and nothing exisiting prior to that 05s

1 Answer 1

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this command seems to work:

ffmpeg -ss 0 -i The\ Big\ Fight\ \(1972\).mp4 -to 45 -c:v copy -c:a copy newfight.mp4

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