Am Mi., 15. Mai 2019 um 14:10 Uhr schrieb Daniel Oberhoff via ffmpeg-user <[email protected]>: > > > On 13 May 2019, at 13:40, Carl Eugen Hoyos <[email protected]> wrote: > > > > Am Mo., 13. Mai 2019 um 13:36 Uhr schrieb Daniel Oberhoff via > > ffmpeg-user <[email protected]>: > >> > >>> You can not. > >> > >> I am curious what exactly the hindrance is. As I understand at > >> least mp4 there is not really a concept of frame rate in the file > >> and in theory every frame can have a different „rate“, defined > >> solely by pts. > > > > FFmpeg's mp4 muxer does not support variable frame rate. > > Oh, how so? From what I understand about mp4 it does not even > contain frame rate in the metadata.
> For us this effectively means we cannot use mp4, since some > of our sources are not very stable in their frame timing. Patch welcome, consider to contact Baptiste Coudurier. > So does the muxer ignore the incoming frame pts and just > imprint monotonic pts with the given frame rate? No, it (allegedly) writes invalid files if you send it vfr frames. Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
