[Issue]: Jellyfin hangs after a bit of playback, especially on LXC

[GeorgeH005]

Please describe your bug

This is related to jellyfin/jellyfin-web#5367. Transferring this here, as the same behaviour is exhibited when using findroid and swiftfin, that as far as I know don't use the web client, just the api. To reiterate, after some minutes of playback, usually 20-30, playback freezes and the server becomes unresponsive. The web client doesn't load, and any connections are timing out. Both connecting directly, and via a reverse proxy exhibit the same behaviour, and being on the same subnet does not make a difference.

Reproduction Steps

1. Select any media file.
2. Start playback.
3. Wait ~30 minutes.
4. Playback should freeze and the server should become unresponsive

Jellyfin Version

Unstable (master branch)

if other:

2024040805

Environment

- OS: Debian 12
- Linux Kernel: 6.5.13-5-pve
- Virtualization: LXC
- Clients: Any (Web through android app and webOS app, swiftfin, findroid)
- Browser: Any (Chrome/Firefox/Safari tested)
- FFmpeg Version: 6.0.1-Jellyfin
- Playback Method: Direct Play
- Hardware Acceleration: QSV
- GPU Model: UHD 750
- Plugins: No plugins can be installed on unstable
- Reverse Proxy: Traefik v3-rc
- Base URL: No
- Networking: VirtIO
- Storage: NFS v4

Jellyfin logs

[WRN] WS "<IP address here>" error receiving data: "The remote party closed the WebSocket connection without completing the close handshake."

[DBG] "AuthenticationScheme: "CustomAuthentication" was not authenticated."

Please attach any browser or client logs here

Request Timeout: https://<domain/ip here>/Users//Items/Resume?Limit=12&Recursive=true&Fields=PrimaryImageAspectRatio&ImageTypeLimit=1&EnableImageTypes=Primary%2CBackdrop%2CThumb&EnableTotalRecordCount=false&MediaTypes=Video

Don't have the whole line right now but this was also reported: "fragLoadTimeOut"

Please attach any screenshots here

No response

Code of Conduct

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[jellyfin-bot]

Hi, it seems like your issue report has the following item(s) that need to be addressed:

• You have not provided the ffmpeg log unaltered from the server. Please provide a valid ffmpeg log.

This is an automated message, currently under testing. Please file an issue here if you encounter any problems.

[crobibero]

fyi No plugins can be installed on unstable is incorrect, we now have an unstable plugin catalog.

Any chance you're running out of ram or disk space?

[GeorgeH005]

fyi No plugins can be installed on unstable is incorrect, we now have an unstable plugin catalog.

Wasn't aware of it, only plugins installed are the ones that come by default.

Any chance you're running out of ram or disk space?

I have 9GB allocated to the jellyfin lxc, and since I was testing with one session while direct playing, I am fairly certain there was more than enough RAM available. The lxc also has some free storage, so I don't think it is running out while playing back, but I will keep an eye on it when I test again. Transcoding is setup on a tmpfs fyi.

[GeorgeH005]

Tested again, there are 8G of RAM available and at least 3G of local storage at the time of the hang. These do not seem likely culprits. Froze after 6 mins. The ssh session to the lxc remains active and responsive the whole time.

[GeorgeH005]

Should note that this behaviour was not present on 10.8.13 and nothing has changed since, in my setup.

[gnattu]

A stupid question: what if you just let the server idle for this long and not playing anything, will the port become unavailable as well?

[GeorgeH005]

@gnattu No, it can stay idle for an indefinite amount of time. There have been days at a time with no playback and it was just fine whenever I tried to connect.

[GeorgeH005]

@gnattu If you point me in the right direction, when it comes to the stream app flow or the relevant points in the codebase, I could try to debug it, see if it gets me anywhere.

[felix920506]

Does it have to be a single >30min long media file or does playing multiple shorter media files back to back also trigger the issue?

[GeorgeH005]

Does it have to be a single >30min long media file or does playing multiple shorter media files back to back also trigger the issue?

Not really sure to be honest, all the media I have tested with were 45min+. However, I am pretty sure it has happened while changing media, so the accumulated play time would have approached that, but any single file alone wasn't played back for that much. Wasn't really looking for it though so can't speak for sure.

[GeorgeH005]

I was able to recreate this on a fresh ubuntu 22.04 lxc running the latest unstable version. The issue occured after 14 mins of playback