deinterlacing [was: Re: [MPlayer-dev-eng] Re: ccache]

[Michael Niedermayer]

Hi

On Sunday 05 January 2003 16:20, Michael Niedermayer wrote:
> Hi
>
> On Sunday 05 January 2003 15:37, Arpi wrote:
> > Hi,
> >
> > > > > 3)
> > > > > The "color interlacing" can happen if an YUV411 Signal is converted
> > > > > to RGB or vice versa. You have to use different algorithms for
> > > > > interlaced and progressive material. For progressive material the
> > > > > first UV-Line contains color information for Y-Line 1+2, for
> > > > > interlaced material it is for Y-Line 1+3.
> > > >
> > > > hmm. do our postproc filters handle this proeprly?
> > > > probably not, since it was designed for YV12 mpegs.
> > >
> > > ?!
> > > YV12 has chroma interlaced too if luma is interlaced, (see mpeg4 or 2
> > > spec) our pp filter deinterlaces this correctly
> >
> > i know it deint yv12 correctly, the question was about YUV411.
>
> hmm seems the 1+3 / 1+2 nonsense confused me, as YUV411 has a line chroma
> for each line luma but the text above says its line 1 luma for line 1+2
> chroma
>
> iam not completly sure where our deinterlacer could have a problem, either
> chorma is interlaced or its not, both are supported, as chroma filtering is
> optional
the pp filter doesnt support yuv411 at all, seems i need (much) more sleep ...
but it should be relatively easy to add yuv411 support to the pp filters 

[...]

Michael