Salient information: It would be unusual for an NTSC-oriented DVD containing a feature film to have anything other than either 23.976 or 24fps material on it. A vanishingly small minority of DVDs containing feature films, particularly early releases made from the same tape masters that had been prepared for VHS duplication, may have 3:2 pulldown on them and you should be able to use special measures to unwind this if it's been done competently. Feature films are very commonly shot at 23.976 (strictly 24000/1001.) Theoretically, anything on an NTSC-oriented DVD will be shown at that rate. P
From: Carl Eugen Hoyos <ceffm...@gmail.com> To: FFmpeg user questions <ffmpeg-user@ffmpeg.org> Sent: Wednesday, 31 October 2018, 23:56 Subject: Re: [FFmpeg-user] frame rate:24 or 24000/1001 for native movies 2018-10-31 23:27 GMT+01:00, sean darcy <seandar...@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 _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".