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

[Rich Felker]

On Tue, Jul 26, 2005 at 08:53:29PM +0200, Matthias Wieser wrote:
> Am Dienstag, 26. Juli 2005 01:19 schrieb Rich Felker:
> > On Mon, Jul 25, 2005 at 03:08:46PM +0200, Matthias Wieser wrote:
> > > > 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
> 
> OK.
> 
> This ist what pp=lb would make out of it:
> http://home.knuut.de/MWieser_/lb.jpeg
> 
> What's the alternative? pp=ci?

Never use pp=ci; it is completely useless. Alll it does is create
redundant information. In this case the correct course of action is
inverse telecine. BUT, in general, the (only) alternative is tfields.
Any half-framerate deinterlacing is inherently broken.

Rich