[FFmpeg-devel] [PATCH 1/2] avutil: Add MSB packed YUV444P10 format

[Michael Niedermayer]

On Thu, Feb 02, 2017 at 11:48:49AM +0100, Michael Niedermayer wrote:
> On Thu, Feb 02, 2017 at 11:26:26AM +0100, Timo Rothenpieler wrote:
> > >> In the mean time, common 12 bit content (YUV420P12 or P016) will be
> > >> correctly converted to P010 for nvenc.
> > > 
> > > What does this change have to do with 4:2:0 content?
> > 
> > Apparently swscale decides that any kind of 12 or 16 bit content, even
> > if 4:2:0, whould be converted to YUV444P16 instead of downsampling it to
> > P010.
> 
> The code decididing pix fmts is in libavutil
> av_find_best_pix_fmt_of_2() and code using that (if i guess correctly
> where the choice is made)

maybe i worded this unclear, iam not sure thats the only path pixel
format decissions are made in but this should be the main one

If the function makes a mistake instead of teh formats available to
it being restricted by something then fixing it could be an easy
solution

[...]


-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No human being will ever know the Truth, for even if they happen to say it
by chance, they would not even known they had done so. -- Xenophanes
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