HDR to SDR Tone Mapping doesn't work

[mariod12345]

Hello everyone,

I have a 4K HDR10 movie on my Jellyfin Server Version 10.8.13 and when I tried to play it on 4K NON-HDR Toshiba Television on Firestick 4K MAX Jellyfin client, the image is still washed out in Exoplayer and in LibVLC.
Enabling and disabling tone mapping doesn't affect anything.

Specs:
Processor: Intel Core i7-7700T CPU @ 2.90GHz  2.90 GHz
Installed RAM 32,0 GB (31,8 GB usable)
GPU: Intel HD Graphics 630 (Driver version 31.0.101.2127)

OS:
Edition Windows 11 Pro
Version 22H2
OS build 22621.3296
Experience Windows Feature Experience Pack 1000.22687.1000.0

[TheDreadPirate]

Tone mapping on the server would only happen if it is transcoding. It sounds like the client isn't requesting a transcode. Are you able to verify that either in the logs or by showing the playback info in the client?

[mariod12345]

Thanks for the answer TheDreadPirate!

I managed it to work if I set bitrate to 10Mbit/s or lower. This triggers to transcode and get the right colors. I don't know how to use logs but I see in task manager when transcoding starts.

Is there any other way to force tone mapping? Is this problem with Android TV client or Jellyfin server?

Thanks!

[TheDreadPirate]

I'm not sure if the problem is Jellyfin on Android TV or FireOS. Since you have a 4K HDR capable Firestick on a non-HDR 4K TV. I'm not sure which component is responsible for the issue. My understanding is that Jellyfin asks the OS about the connected TV's capabilities.