On 8/28/20, Gary Yost <g...@yostopia.com> wrote: > ’ve got a question about the Prores implementation in ffmpeg because I’ve > seen some odd behavior here with FCPX (running on a very beefy 16-core Mac > Pro with 192Gram and an Afterburner card). > > When I output files from ffmpeg in ProresLT format and bring them into FCPX, > they stutter badly… playback is ~5fps. But when I transcode/optimize them > in FCPX, which creates Prores422 versions of those files, they play back in > FCPX seamlessly. > > The ffmpeg files _used_ to play back seamlessly on this machine when I was > doing this Jan-March, but I haven’t been using this workflow since March. > My questions are: > > 1. Is the Prores implementation in ffmpeg a 100% accurate implementation as > per the Apple spec?
There is no Apple specification for ProRes. At least not official one as open standard. > > 2. Has anything changed in the Prores code transcoding of ffmpeg in the lat > 4 months? If ffplay playback is also very slow, than yes. > > Thanks! > > -g > _______________________________________________ > 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". _______________________________________________ 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".
