I have no way of testing these properly on an HDR capable display, but if someone is willing to experiment further, below are some AVIF HLG samples exported from dt.
lilienstein_1k_HLG.zip (1.6 MB)
They look ok to me in Windows and paint.NET…
I only did (XMP attached):
- pull exposure by -1.36 EV (this is to match HLG 0.5 reference white to sRGB 0.5 reference white)
- change output profile to HLG Rec2020
lilienstein_1k.hdr.xmp (4.0 KB)
Then I did two exports:
- default where profile is left at “image settings” (this doesn’t put the color info into CICP, but inserts an ICC profile instead; note also that CICP should be “unspecified” 2/2/2 in this case instead of 0/0/2 that dt 3.4.1 currently sets - this is already fixed in master for the next release and I edited the bits manually in the zip above)
- set explicit export profile to HLG Rec2020 (this sets the CICP flags directly, no ICC profile included)
Btw, the forum SW doesn’t allow AVIF (nor HEIF?) upload…