[FFmpeg-devel] [PATCH] lavfi: add kerndeint filter

[Michael Niedermayer]

On Mon, Oct 22, 2012 at 03:02:07PM +0200, Jérémy TRAN wrote:
> 2012/10/20 Michael Niedermayer <michaelni at gmx.at>:
> >> what is different ?
> >> are the differences just +-1? larger?
> >> just luma?
> >> just chroma?
> >> just right border?
> >> just left?
> >> all pixels ?
> >>
> >> awnsers to these may help in finding what causes the difference
> >
> > also if you see no difference in the filter, its possible theres a
> > difference outside (a addional scale filter or bug) dumping the
> > filters input and output directly may be worth it if you suspect this.
> >
> > And it uses floats, rounding with floats can differ due to compiler
> > optimization differences even when the code is practically the same
> > knowing if the differences are just +-1 could give a hint toward this
> 
> Just by looking at the output (make fate-lavfi-kerndeint_pixfmts) it
> looks good to me.
> Chroma and luma differ when checking the output with showinfo.
> 
> What do you mean by +-1 larger ?

i meant the difference in the 8bit luma (or chroma) samples between
lavfi and libmpcodecs

i think tiny_psnr can be used to find the max difference though it
doesnt seperate luma and chroma

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Republics decline into democracies and democracies degenerate into
despotisms. -- Aristotle
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