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I've been trying to do this conversion for a couple of days reading through forums

ffmpeg -i in1.mp4 -vcodec libx264 -s 720x576 -vf "fps=25"-vsync cfr -b:v 2300k -acodec aac -b:a 128k out1.ts

I've tried the below flags found in other forums -r 25 -vf fps=25 -filter:v fps=25 -filter:v fps=fps=25

I then read the file using mediainfo and keep getting the same result; Frame rate mode : VFR Frame rate mode : Variable Frame rate : 46.875 Frame rate : 46.875 FPS (1024 SPF)

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  • what is the .ts video format, and how does it compare to .mts?
    – user610620
    Mar 2, 2021 at 22:00
  • @user610620 Please don't start a side-topic discussion in the comments. The difference between ts and mts is irrelevant here.
    – Matt
    Mar 3, 2021 at 8:20

1 Answer 1

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Do not use ts, use mp4. MPEG-TS (.ts) and mkv default to VFR, while mp4 defaults to cfr. https://trac.ffmpeg.org/wiki/ChangingFrameRate

That is this bug. https://trac.ffmpeg.org/ticket/4768

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