[MPlayer-dev-eng] [PATCH] Field-reordering filter

[Reimar Döffinger]

On Wed, Jan 20, 2010 at 08:22:02PM +0100, Steinar H. Gunderson wrote:
> On Sat, Jan 09, 2010 at 12:23:23PM +0100, Steinar H. Gunderson wrote:
> > Here's a dead simple filter to switch TFF material to BFF or vice versa --
> > it uses the standard editing trick of shifting the entire frame one line up.
> > It's different from the phase filter in that it's not intended to correct
> > a miscapture; thus, it preserves frame boundaries (keeping the same two
> > fields together all the time) and doesn't cause any A/V delay.
> 
> Ping. Does anybody want to take a look at this patch?

It might be simpler to just add the right filter combination to do it
with crop and expand as you have been doing in the documentation.
Possibly something like
-vf format=444p,crop=...,expand=...,scale,format=yv12