HDR support

[maicol07]

Add support for direct HDR output.
Supported since OBS 28: https://github.com/obsproject/obs-studio/releases/tag/28.0.0
https://github.com/obsproject/obs-studio/wiki/High-precision-color-spaces-%28including-HDR%29

[Segergren]

Hi! I don’t have an HDR monitor, so it will be hard for me to implement and verify. Hopefully I can get help with this one.

[maicol07]

I can test it if you want 😁

[Danzikks]

I join the problem!) I'm really looking forward to anyone's decision so there's no faded video recording. The easiest solution is to convert a video to rec 709 when recording in hdr.

[Segergren]

I join the problem!) I'm really looking forward to anyone's decision so there's no faded video recording. The easiest solution is to convert a video to rec 709 when recording in hdr.

Can you send me a sample recording?

[Danzikks]

I join the problem!) I'm really looking forward to anyone's decision so there's no faded video recording. The easiest solution is to convert a video to rec 709 when recording in hdr.

Can you send me a sample recording?

https://drive.google.com/file/d/1vRFwpbn1QKbMrrTM0ZXVDtGc1k3hW-hl/view?usp=sharing

[SquiIIiam]

I'm also interested in seeing support for HDR recording added since I upgraded to an OLED display a few weeks ago!