[FFmpeg-user] frame rate:24 or 24000/1001 for native movies

Carl Eugen Hoyos ceffmpeg at gmail.com
Thu Nov 1 01:56:09 EET 2018

2018-10-31 23:27 GMT+01:00, sean darcy <seandarcy2 at gmail.com>:
> I've got a bunch of soft-telecined dvds. I'm trying to get them
> back to native format, 24fps.

Note that players should simply ignore the soft-telecine assuming
you are not using an old american tv set.

> ffmpeg -i input.vob -r [??????] output.mp4

The ntsc framerate is 30000/1001, if you divide this by the usual
telecine rate, you get 24000/1001. FFmpeg's console output will
tell you if it had to drop or duplicate frames. If - except maybe for
the absolute start of the video to correct different audio and video
start times - no frames are dropped or duplicated, the output frame
rate is correct.

Carl Eugen

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