[MPlayer-users] Re: Crop before deinterlacing OK?

[Rich Felker]

On Mon, Jul 25, 2005 at 03:08:46PM +0200, Matthias Wieser wrote:
> Am Montag, 25. Juli 2005 14:49 schrieb Rich Felker:
> > On Mon, Jul 25, 2005 at 12:30:11PM +0200, Matthias Wieser wrote:
> >
> > > Maybe kerndeint could be improved by replacing the cubic
> > > interpolation by the pp=fd interpolation which gives nicer edges.
> >
> > pp=fd is not (just) interpolation. It's a blend filter, just like lb,
> > except it only operates on one field and blends the interpolated value
> > with the discrete laplacian of the other field rather than the
> > original pixels of the other field.
> 
> Hm, maybe the manpage is a bit misleading.
> 
> > This makes nasty ghosts, in the 
> > form of an edge-detected version of the discarded field...
> 
> ...which no person has ever seen?...

It's clearly visible. See this example I created a long time ago:
http://brightrain.aerifal.cx/~dalias/lavcdeint_sucks.jpg

> > > Maybe someone ports some additional deinterlacers from dscaler...
> >
> > The only way to get anything remotely correct is by doing per-pixel
> > motion estimation using 2 fields of same parity, and then interpolated
> > motion compensation on the opposite parity field to try to make it
> > line up.
> 
> Maybe TomsMoComp deinterlacer from DScaler?

Dunno how it works.. maybe.

Rich