[Webkit-unassigned] [Bug 181445] WebGL video texture black in Safari 11.0.2 and wrong colored in Safari Preview 11.1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=181445

--- Comment #16 from Klaus Reinfeld <mail at krpano.com> ---
(In reply to Jer Noble from comment #15)
> Thanks for making these test cases, this will help with debugging quite a
> bit!  It'd also be helpful to post the command line you passed to ffmpeg to
> generate these samples so we can reproduce the outputs with other test media.

That's the basic ffmpeg command line: 

ffmpeg -i input.mp4 -vf format=yuv420p -c:a copy output.mp4

with these parameter values as format:

yuv420p - for video range (16-235)
yuv422p
yuv444p
yuvj420p - with 'j' is for full range (0-255)
yuvj422p
yuvj444p


> I suspect that the 422 and 444 formats aren't supported by AVFoundation's
> AVC decoder. This piece of the issue needs to have a Radar filed against it;
> it's a platform bug and not a WebKit one.

The not working/supported 422 and 444 formats are not that big problem (even 444 support would be nice), but the BLACK video-texture in Safari 11.0.2 and green-tinted texture in Safari Preview with the fullrange video are a big problems!

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