Fix overly strict dovi level testing

[nyanmisaka]

4k@60fps is usually only seen in demos so it's a bit overkill for testing dovi caps. Lower it to the more common 4k@24fps.

Ref: https://professional.dolby.com/siteassets/content-creation/dolby-vision-for-content-creators/dolby-vision-streams-within-the-http-live-streaming-format-v2.0-13-november-2018.pdf

Changes

• Fix overly strict dovi level testing

Issues

• iPad Pro 2018 only reports up to 4k30 dovi support after upgrading to iPadOS 17, but can actually play 4k60 normally and it used to report 4k60 on older systems.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[gnattu]

Actually I was facing some bugs that in rare case the DOVI mode is not triggered and Profile 5 60fps videos are rendered in wrong color, but I cannot reliably reproduce it now. Probably this is the quirk but let's only test for 24fps for now.

BTW, if someone has iPad Pro 2024 with M4 chip I'd like to get the report of Dolby Vision Profile 10 playback testing results. It is rumored to support dav1.10.09 but I'm not verified that yet.

[nyanmisaka]

Actually I was facing some bugs that in rare case the DOVI mode is not triggered and Profile 5 60fps videos are rendered in wrong color, but I cannot reliably reproduce it now. Probably this is the quirk but let's only test for 24fps for now.

I can't imagine a device that supports Dolby Vision but doesn't support 4k60 playback.

BTW, if someone has iPad Pro 2024 with M4 chip I'd like to get the report of Dolby Vision Profile 10 playback testing results. It is rumored to support dav1.10.09 but I'm not verified that yet.

dav1 is already in the documentation. https://developer.apple.com/documentation/http-live-streaming/hls-authoring-specification-for-apple-devices-appendixes#The-SUPPLEMENTAL-CODECS-attribute

Tested that jellyfin-ffmpeg7 can tonemap and remux dav1. It seems that no player yet is capable of this fourcc, software decoders always expect av01.

I'm not sure to what extent SUPPLEMENTAL-CODECS plays a role. But not having it did not stop us from playing DoVi.