qctools Support of BT.2020 10-bit

For the moment only BT.601 and BT.709 are supported, adding BT.2020 (at least 10-bit version) would be great.

Dec 03 '18 16:12 JeromeMartinez

This involves many pieces and perhaps I'm missing a few.

update vectorscope in ffmpeg
adjust the levels used in the saturation graphs
ensure proper color reporting in the table

Dec 03 '18 16:12 dericed

BT.2020 supports various nits values so for which nit value is 100% red and for which is 75% red?

Dec 03 '18 21:12 richardpl

Actually that is relevant only for HDR. You only need SDR variant?

Dec 03 '18 22:12 richardpl

The exact need may have to be clarified, definitely. What is the complexity of having both SDR and HDR (if there are differences in the implementation, with PQ10 / HLG10 / HDR10) variants?

Dec 03 '18 23:12 JeromeMartinez

HDR with non-constant lighting requires parsing metadata to get right positions for graticule.

Dec 04 '18 09:12 richardpl

Starting with constant lighting would be great, then we see.

Dec 04 '18 09:12 JeromeMartinez

That’s the reason why so much nice HDR content looks that bad when scaled down to SDR.

Dec 04 '18 11:12 retokromer

Are there any test pattern in bt.2020 ?

Dec 04 '18 16:12 richardpl

I'll check if and where free ones are available, as soon as I‘m back home.

Dec 04 '18 17:12 retokromer

@richardpl Does this answer your question? https://www.burosch.de/tv-bildeinstellungen/testbilder.html

Dec 07 '18 12:12 retokromer

I need something with 75% and 100% color bars.

Dec 07 '18 17:12 richardpl

@richardpl I’ll check.

Dec 08 '18 08:12 retokromer

this: http://www.testvid.com/all-test-material/other-test-media#4k-qhd-2k-hd-720-1080-test-patterns

Dec 09 '18 20:12 richardpl

Thank you, @richardpl, for the information!

Dec 09 '18 21:12 retokromer