d3d11va does not forward HDR metadata to VO

[FoLLgoTT]

Important Information

With gpu-next and hwdec=d3d11va-copy or dxva2-copy the image is significantly darker on HDR content.

Software decoding:

Hardware decoding:

Expected behavior

Same brightness.

Actual behavior

Image is darker.

Log file

softwaredecoding.txt d3d11va-copy.txt

[haasn]

Doesn't seem like there's an obvious issue in the metadata:

[vf] [out] 3840x2160 yuv420p10 bt.2020-ncl/bt.2020/pq/limited/display SP=4.926108 CL=uhd
[vf] [out] 3840x2160 p010 bt.2020-ncl/bt.2020/pq/limited/display SP=4.926108 CL=uhd

It could be the mastering colorspace primaries. Just to confirm, does --gamut-mode=clip make the difference go away?

[FoLLgoTT]

It could be the mastering colorspace primaries. Just to confirm, does --gamut-mode=clip make the difference go away?

Yes, with clip the problem completely goes away.

[haasn]

Old issue, and no longer as pressing since --gamut-mode=clip is now the default behavior, but the likely culprit here is that d3d11va hwdec does not forward all HDR mastering metadata, by the sound of it.

[kasper93]

@FoLLgoTT Could you test with the latest version? There were fixes recently in this area and to my knowledge all metadata is passed correctly now with -copy hwdec.

[FoLLgoTT]

@kasper93 I don't seen any difference anymore. Thank you! :-)

[Dudemanguy]

Seems like this was fixed? Closing.