Combed frames after IVTCing with ffmpeg

[Makaveli84]

I've ripped a bunch of anime episodes from a commercial DVD into VOBs that I am converting to x264 with ffmpeg. My filterchain starts off with something like "-filter:v fieldmatch,yadif=deint=interlaced,decimate". However, combed frames remain in the encoded video. The middle "yadif=..." fallback filter has no effect. I get a bit identical output file with or without it in the filterchain. Apparently, those interlaced frames are not marked as being such. The ffmpeg console output from the fieldmatch and/or decimate filters indicates that those frames are "still interlaced".

Is there some workaround or is there something else I should do?


P.S. I'm trying to stick to only using ffmpeg for this (no Avisynth).

[poisondeathray]

Try reducing the combing threshold, or MI

In ffmpeg, they are cthresh, combpel respectively

https://www.ffmpeg.org/ffmpeg-filters.html#toc-fieldmatch