HDR support for Apple TV 4K

[Kyrunner 72]

Does the Emby app support hdr playback on the Apple TV? Or is there a setting that needs turned on.

Edited April 12, 2021 by Kyrunner

[Happy2Play 9441]

5 minutes ago, Kyrunner said:

Does the Apple TV 4K not support hdr playback. Or is there a setting that needs turned on.

Pretty sure it is more about playback method as HDR is only supported in Direct Play.  So if conversion is needed for audio or subtitles then HLS will require a full transcode breaking HDR.

So the first question would be what playback method is happening and why?  Please post server and ffmpeg log if present.

[Kyrunner 72]

ffmpeg-remux-4205a822-18c9-4e0d-a5b2-d1256eab0dc2_1.txt

[vdatanet 1586]

3 hours ago, Kyrunner said:

ffmpeg-remux-4205a822-18c9-4e0d-a5b2-d1256eab0dc2_1.txt 319.22 kB · 2 downloads

MPV player does not support HDR passthrough and Native player does not support MKV direct play. So the only one way to have HDR playback is using MP4 container. HEVC streaming in Apple TV requires fMP4. Unfortunately Emby does not support HLS fMP4 streaming. So MKVs HEVC are full transcoded.

I suspect that the log you provide uses the MPV player. As said before MPV for Apple TV does not support HDR passthrough and so it does tonemapping.

Edited April 12, 2021 by vdatanet