Just to be clear, in the other thread, I got detelecine to work (with the wrong params?) but couldn't get fieldmatch+decimate to work. But this may have been due to my files being particularly exotic.
And there's also another inverse detelecine filter called "pullup". Also, how do you do: configure 'fieldmatch'+'decimate' can be configured to match the static functionality of 'detelecine'? I agree that should be in the documentation. On Wed, May 28, 2025 at 2:35 PM Mark Filipak <markfilipak.i...@gmail.com> wrote: > On 28/05/2025 17.27, Paul B Mahol wrote: > > On Wed, May 28, 2025 at 9:19 PM Mark Filipak <markfilipak.i...@gmail.com > > > > wrote: > > > >> On 28/05/2025 15.39, Alex Xu wrote: > >>> I recently used the detelecine command in this thread: > >>> https://ffmpeg.org/pipermail/ffmpeg-user/2025-May/059249.html > >>> > >>> I got strange results with the `fieldmatch+decimate` combo, where > >> decimate > >>> wasn't removing the correct frame. > >>> > >>> I also got strange results with the `pullup` filter. > >>> > >>> This may just be because my sample file was really exotic though. > >> > >> Yes, there are 'strange' telecines. I've seen 'NTSC' field sequences in > >> which authors inserted > >> varying telecined sequences at varying times (when bad timing became > >> obvious to them) to maintain > >> running time and sync with audio, and even 'PAL' that took cinema to 25 > >> fps via varying telecine, > >> again to maintain running time and audio sync. I gave up trying to make > >> them 24p in the usual ways > >> and simply 'bobbed' them at 59.940p and 50p. > >> > >> None of those experiences justify keeping the 'detelecine' filter. > >> > >> I'm simply using 'detelecine' as a clear-cut example of all the filters > >> that should be deprecated, > >> or at least marked "obsolete". That would really help novices avoid > >> headaches. > >> > >> > > But user above just reported only single usecase where detelecine just > > works for him. > > That's not what Alex wrote. Alex wrote "got strange results with the > `fieldmatch+decimate` combo" -- > which I proceeded to explain. He didn't claim that 'detelecine' works. In > addition, > 'fieldmatch'+'decimate' can be configured to match the static > functionality of 'detelecine', and > such static matching to a deprecated filter should be included in the > documentation, as an aid. > > The alternative is to continue emasculating FFmpeg. > > _______________________________________________ > 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".
