Carl Eugen Hoyos-2 wrote >> Am 24.04.2020 um 11:10 schrieb Mark Filipak <
> markfilipak.windows+ffmpeg@ > >: >> >> I've been told that, for soft telecined video the decoder is fully >> compliant and therefore outputs 30fps > > (“fps” is highly ambiguous in this sentence.) > > This is not correct. > I believe I told you some time ago that this is not how the decoder > behaves. I believe such a behaviour would not make sense for FFmpeg > (because you cannot connect FFmpeg’s output to an NTSC CRT). The telecine > filter would not work at all if above were the case. > Or in other words: FFmpeg outputs approximately 24 frames per second for > typical soft-telecined program streams. > > The only thing FFmpeg does to be “compliant” is to forward the correct > time base. If you use direct encode, no filters, no switches, the output from soft telecine input video is 29.97p, where every 5th frame is a duplicate e.g ffmpeg -i input.mpeg -c:v rawvideo -an output.yuv But you can "force" it to output 23.976p by using -vf fps Is this what you mean by "forward the correct time base" ? -- Sent from: http://www.ffmpeg-archive.org/ _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".