[FFmpeg-user] Reversing PAL->NTSC telecining.

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Jan 7 01:21:00 CET 2014

Nicholas Robbins <nickrobbins <at> yahoo.com> writes:

> >>  >>  >>  If you recall, something about how mplayer dumps its 
> >>  >>  >>  vobs labels them as ~60fps, when they are really ~30.
> > 
> > I would like to look at this issue (if it is reproducible.
> > (The fps filter should not be necessary.)
> So, do you want the output of perhaps
> mplayer -dvd-device /dev/sr0 dvd://1 -dumpfile out.vob 
> -dumpstream -endpos 2M


> >>  a) -vf fps=30000/1001,fieldmatch,decimate=6
> > 
> >>  won't a) leave interlaced frames?
> > 
> > Only for very badly cut material.

> the ffmpeg docs suggest including yadif.

It also suggests that fieldmatch is better than 
pullup but I still haven't seen a sample that 
shows this (it is much slower though).

> fieldmatch=order=tff:combmatch=full,yadif=deint=interlaced,decimate

I think this does not always work correctly so you should 
probably only use it if necessary for your sample.

Carl Eugen

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