Apple Silicon's GPU transcoding / Tonemapping

[nyanmisaka]

The full VideoToolbox transcoding pipeline was not available in the past due to missing GPU accelerated hardware filters. But recently new developer (credit by @gnattu) have completed this to take advantage of the Metal API and the fixed-function hardware, and the prime time will be in Jellyfin 10.9 (planned to be next week if there are no exceptions).

See also
https://github.com/jellyfin/jellyfin/pull/11014
https://github.com/jellyfin/jellyfin/pull/11198
https://github.com/jellyfin/jellyfin.org/pull/875
https://github.com/jellyfin/jellyfin.org/pull/949