Client Resolution stuck at 1080p Xbox Series S

[vladtaylor]

This issue respects the following points:

• This is a bug, not a question or a configuration issue; Please visit our forum or chat rooms first to troubleshoot with volunteers, before creating a report.
• This issue is not already reported on GitHub (I've searched it).
• I'm using an up to date version of Jellyfin for Xbox and Jellyfin Server, unstable or master; We generally do not support previous older versions. If possible, please update to the latest version before opening an issue.
• I agree to follow Jellyfin's Code of Conduct.
• This report addresses only a single issue; If you encounter multiple issues, kindly create separate reports for each one.

Description of the bug

Client refuses to run at 4k.

Confirmed that Xbox is running at 4k but when the JellyFin is launched the player resolution is stuck at 1080p.

The Client settings "Change resolution to match media" and "change refresh rate" are not supported.

HDR works fine, but cannot get the client to play media at more than 12/Mbps or 1080p.

This happens when both when transcoding media into HEVC or direct playback.

Reproduction steps

1. Open JellyFin client
2. Open any 4k content
3. View playback info

What is the current bug behavior?

Media does not playback at 4k, stuck at 1920 by 1080

What is the expected correct behavior?

Expected the app to run at native 4k

Jellyfin for Xbox version

0.9.0+

Specify commit id

No response

Jellyfin Server version

Unstable

Specify commit id

No response

Specify unstable release number

No response

Specify the build version

10.11.0-rc5

Platform

Xbox

Environment

- Device:  XBOX Series S
- OS Version: 10.0.26100.5362(xb_flt_2508ge.250807-1745)

Relevant screenshots or videos

Additional information

Will add after

[JPVenson]

Hey,

Is your Xbox connected via HDMI to a 4K monitor? aka do other apps work in 4K?

[vladtaylor]

Yeah, the 4K checks are all good on the settings, dont use the xbox for anything other than JellyFin client. The the tv does report a 4k HDR input.

Edit, added 4k details in main post

[JPVenson]

thats very strange, when HDR is working the setup itself works and if you can direct play HVEC too we already told the xbox to use the new mode ... it seems for some reason the xbox does not notify us that 4K is even possible. I dont own a Series S so i cannot test that directly but i will continue looking into it.

[vladtaylor]

thats very strange, when HDR is working the setup itself works and if you can direct play HVEC too we already told the xbox to use the new mode ... it seems for some reason the xbox does not notify us that 4K is even possible. I dont own a Series S so i cannot test that directly but i will continue looking into it.

Let me know if you want to do any further testing or if you'd like any further logs.

[JPVenson]

The issue is that without you getting your xbox into developer mode (which costs money from microsoft) there isn't much you can test for me ^^

[JPVenson]

But i do have an idea where to possibly look

[vladtaylor]

But i do have an idea where to possibly look

I have Xbox Dev Mode turned on, I can set you up with remote access to it, just DM me

[vladtaylor]

Launched the app in dev mode and it seems that the APP is definitly running in 1080p. When I take a system screenshot, its only 1080p despite settings saying its 2160p

[vladtaylor]

The same issue appears to be persistent in 9.1.0

[JPVenson]

can you try Pr #93 please?
I think might already fixed that by mistake

[gaulu]

Hello, same here but with a Xbox Series X.

• Jellyfin for Xbox version 9.2
• Jellyfin server 10.10.7

Here my playback info

TV support 4K and HDR
Xbox has HDR activated (and is triggered by jellyfin HDR content) and in 4K mode.

Unfortunately I do not have dev mode :(

[vladtaylor]

Hello, same here but with a Xbox Series X.

• Jellyfin for Xbox version 9.2
• Jellyfin server 10.10.7

Here my playback info

TV support 4K and HDR Xbox has HDR activated (and is triggered by jellyfin HDR content) and in 4K mode.

Unfortunately I do not have dev mode :(

Dev mode is not too hard to activate, I didnt even have to pay, in either case just wait, i am sure once JP figures out what the issue is, he will push to main on next release,

[JPVenson]

I think i will need to get an series X or S for that to actually debug it to its full extend as my xboxOne can only do 1080p. But i am currently a bit short on money so if i dont suddenly see an obious error it might take a bit

[brad1111]

I think the resolution/hdr support depends on a feature thats not yet been merged into Jellyfin Web jellyfin/jellyfin-web#6900.

It seems that Jellyfin-Xbox expects some arguments to be put into enableFullscreen that give it info about resolution & hdr, that depend on this PR.