[MPlayer-dev-eng] New inverse-telecine filter

Billy Biggs vektor at dumbterm.net
Thu Dec 4 21:30:14 CET 2003

Zoltan Hidvegi (mplayer at hzoli.2y.net):

> > But if youre capturing in YV12, then it's a bug in bttv if it does
> > not give interlaced chroma, there is no way around that.
> But what I'm saying is that if it did give interlaced chroma, than it
> would destroy the chroma of progressive frames, so encoding movies
> from TV would look bad.  There is no correct way to subsample mixed
> interlaced/progressive 4:2:2 into 4:2:0 without knowing what is
> interlaced and what is progressive.

  I'm glad you phrased it this way because I think this is the subtext I
was reading in your emails, and this is what I disagree with.  How does
giving interlaced chroma all the time destroy the chroma of progressive
frames?  The process of converting from interlaced 4:2:0 to progressive
4:2:0 once you have determined that two consecutive fields are from the
same progressive frame should be a reasonably straightforward filter.  I
understand that you cannot just merge them like you can with the luma,
but it should not be very difficult to do something intelligent.


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