[MEncoder-users] Re: yadif and funny period-6 interlacing

[Ilya Zakharevich]

[A complimentary Cc of this posting was NOT [per weedlist] sent to
Ilya Zakharevich 
<mencoder-users at mplayerhq.hu>], who wrote in article <ehbsb1$8da$1 at sea.gmane.org>:
> 
> I got a 29.97fps DVD which when "."-ed in MPlayer, shows interlacing
> patterns with period 6.  Every 6th frame is progressive, it is bounded
> by two frames with a little bit of interlacing pattern, and the
> "middle" 2 frames show a major interlacing.
> 
> Doing yadif=3,mcdeint can't cope with interlacing of two "middle"
> frames.  Is there any alternative?

> P.S.  Juggling numbers 30fps and 6frames, this pattern looks like an
>       artefact of PAL->NTSC conversion.

I wonder whether

 -ofr 25 -vf pullback,softskip 

will be able to help; will not be able to check it soon, since the
computer is going to be busy about 96h running a 2-pass

  -vf yadif=3,mcdeint

run on a different DVD...

Ilya