SOLVED: Can't play HDR DV HEVC MKV files

[Tim]

I never used hardware acceleration myself and my budget to get a system to do that solely for testing Jellyfin problems is limited (gpus are expensive). So if someone who has more knowledge about hwa can help this user please do so. That aside, I will see what I can do.

> it has a very obvious green/purple tint. Is that normal?
it is transcoding to SDR without tonemapping perhaps? use HWA to enable tonemapping when transcoding.

> When I map a drive to my server that hosts the content, I can play the video file just fine via VLC on my PC.
Using VLC directly will either software decode or use hardware decode. It does not transcode itself as it is just a media player. It can tonemap, however.

> My Jellyfin server is on the latest stable Linux Mint with an Nvidia P400 for hardware transcoding.
Are you sure hwa is working?

Please provide the logs of jellyfin ffmpeg.