SOLVED: Audio but no video using Jellyfin Media Player

[Will]

I have Jellyfin server running on a Fedora Linux machine currently and using it to watch videos with Kodi installed on 2 different Nvidia Shields.  I have no issues at all with blackback on those devices, but on 2 seperate Windows machines I cannot get video with the Jellyfin Media Player.  Audio works fine, and video did work at one point but suddenly stopped.  Happens with videos encoded with x264,x265, MP4, etc...  The 2 machines are both running Windows 11, one with an Nvidia GPU and the other with an AMD APU.  I've tried searching here, Reddit, Google, etc... seems other people are having similar issues but none of them were resolved.

One weird thing I did notice, is that if you resize the video while it's playing, the resized portion of the window displays video.



You can see there is video showing just to the right of the time index.  It disappears as soon as the resize is done.  Also if you switch back and forth between windowed and full screen you briefly see a flash of video.  I get the same results with or without transcoding enabled.  If I click on the trailer link for a movie, it does play properly.

I have attached the log file from my last attempt to play a video.

Any ideas?

[TheDreadPirate]

Check some of the workarounds from users in this github issue.

https://github.com/jellyfin/jellyfin-med...issues/451

[Will]

That seems to be for a different issue, the user there is saying the media player itself doesn't show up.

[TheDreadPirate]

Uninstall, delete C:\Users\yourUser\appdata\local\jellyfinmediaplayer, reinstall.

If you can't get that to work, you can try Jellyfin MPV Shim. There are a lot of display bugs with Jellyfin Media Player, especially on multi-monitor setups. Jellyfin MPV Shim has a different rendering process.

https://github.com/jellyfin/jellyfin-mpv-shim/releases

Side note. Have you tried moving the Jellyfin Media Player to a different monitor? Your log indicates you have 3?

[Will]

I tried on all three, same results.

Uninstalling and deleting the folder seems to have fixed it, thanks!

[Will]

Spoke too soon. Jellyfin media player worked fine, once. After I started it again I'm back to sound but no video.

Deleting the jellyfinmediaplayer and "Jellyfin Media Player" folders fixes the issue, but I have to delete them each time I close the player.

[TheDreadPirate]

There should be a bunch of config files in that jellyfinmediaplayer folder (I don't have access to my desktop to find the right one). Can you compared and/or share the config files from a "first time" startup and then the subsequent startups?

[Will]

I deleted the folders and ran it twice.  Log files attached.

[Will]

I narrowed it down to a single file. In the folder "AppData\Local\Jellyfin Media Player\QtWebEngine\Default\Local Storage\leveldb" there's a file called "000003.log". If I delete that file and launch the media player again, it forces me to select a server and login again, but then video playback works until I close media player and open it again. It seems to be the only file that fixes the issue.

The really odd thing is that if I launch the media player after deleting that file, setup the server, and then close media player before I watch any videos, when I launch it again I'm back to a black screen. I don't even need to watch anything to break it.

[TheDreadPirate]

I'll get back to you later tonight after I get home and eat dinner.

I need to compare your log with a log from my system and find any config files in there that could point us in the right direction.