Playback error code: 4294967276 preventing all files from playing

Plex Players Desktop Players
,
1

Server Version#:1.41.2.9200-72009200
Player Version#:1.105.1
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

Looking for some help troubleshooting a playback error that I cannot seem to solve. I have tried deleting plex app and reinstalling. I have tried reinstalling the server side as well. I can play any file from a browser and on apple tv with no problem. Only the desktop app is giving me problems. Any help would be so grateful. Thank you very much.

2

If you’re using Chrome to play it back, there lies your problem. My other browsers work fine. :crossed_fingers:

3

Try installing the latest Beta version of PMS and see if the problem persists.

Otherwise, do the following in the order given:

  1. Stop Plex from running on the NAS.
  2. Wait for 3 minutes then restart Plex.
  3. Open Plex/Web using http://NAS-IP-ADDRESS:32400 and play something you know has failed before
  4. Open Plex Settings > Server > Troubleshooting and click on Download Logs.
  5. Attach the .zip file to your post, thanks.
4

Thank you for the detailed instructions.
the beta version did not make any difference when trying to play from the MacOS desktop app. Attached is the .zip file of the logs. Thank you again.
Plex Media Server Logs_2024-12-01_16-05-37.zip (2.4 MB)

5

Im not having any problems with browser playback. I cant playback anything using the desktop app for MacOS.

6

Thanks.

From your logs:

Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Selected protocol dash; container: mp4
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: analyzing media item 2205
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Bodies Bodies Bodies (2022): Direct Play is disabled
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Bodies Bodies Bodies (2022): media must be transcoded in order to use the dash protocol
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Bodies Bodies Bodies (2022): no direct play video profile exists for http/mkv/h264
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Bodies Bodies Bodies (2022): no direct play video profile exists for http/mkv/h264/ac3
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] Bodies Bodies Bodies - audio.channels limitation applies: 6 > 2
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Bodies Bodies Bodies (2022): Audio Direct Streaming is disabled, so video's audio stream will be transcoded
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Cannot direct stream audio stream due to profile or setting limitations
Dec 01, 2024 16:04:26.792 [139625859922744] DEBUG - [Req#c1/Transcode] MDE: Bodies Bodies Bodies (2022): selected media 0 / 2205

No issues playing the file here that I can see at least, but I’m afraid my instructions were not very clear.

I really meant for you to play something in the desktop app that has failed before and then grab the logs, so that I could see the failure in action.

Stop the Plex for Mac OS app, restart it and play something until it fails, then open Finder and navigate to: ~/Library/Logs/Plex/ and zip the contents of that folder and add the zip file to your post as well as the server logs, thanks.

My apologies for not making things clear.

7

Plex Media Server Logs_2024-12-01_17-05-58.zip (2.6 MB)
Plex.log.zip (152.7 KB)

Thank you for clarifying, this makes more sense. See attached.

8

Thanks for that :slight_smile:

From your server logs:

Dec 01, 2024 17:03:10.648 [139625836718904] DEBUG - [Req#33cc] Whacked session fedhyixcf2sgqxpa9et2leyb, 0 remaining.
Dec 01, 2024 17:03:10.652 [139625903864632] ERROR - [TranscodeOutputStream] Streaming Session 0x7efd30db06a8 appears to have died from under us
Dec 01, 2024 17:03:10.652 [139625903864632] DEBUG - Removed transcode data consumer, active count 1 => 0
Dec 01, 2024 17:03:10.652 [139625841052472] DEBUG - [TranscodeOutputStream] Input processing thread exited after writing 202582 bytes, m_closed=1, m_endOfFileReached=1, session->isStopped()=1
Dec 01, 2024 17:03:10.652 [139625914272568] DEBUG - Jobs: '/volume1/@appstore/PlexMediaServer/Plex Transcoder' exit code for process 25910 is -9 (signal: Killed)

From your app logs:

Dec 01, 2024 17:09:00.479 [0x70000ba06000] ERROR - [MPVEngine] something happened.
Dec 01, 2024 17:09:00.479 [0x70000ba06000] DEBUG - [MPVEngine/mpv] cplayer: finished playback, something happened (reason 4)
Dec 01, 2024 17:09:00.479 [0x70000ba06000] INFO - [MPVEngine/mpv] cplayer: 
Dec 01, 2024 17:09:00.862 [0x7ff84aa6ddc0] ERROR - [Web] [QTMedia(1)] A critical error occurred: 4294967276 An unknown error occurred (4294967276)
Dec 01, 2024 17:09:00.865 [0x7ff84aa6ddc0] ERROR - [Web] [Player] Direct Play failed, but server can transcode. Attempting to fallback to either Direct Stream or transcode...
Dec 01, 2024 17:09:00.887 [0x70000ba06000] DEBUG - Executed command '["stop",]'
Dec 01, 2024 17:09:00.891 [0x7ff84aa6ddc0] ERROR - [Web] [QTMedia(1)] componentWillUnmount rejected: {
  "type": "[object Error]",
  "stack": "Error: Resolved after unmount\n    at file:///Applications/Plex.app/Contents/Resources/web-client/js/main-8792-0816f866d418f1d5f8eb-plex-4.142.1-8a541f3.js:2:3028882\n    at async file:///Applications/Plex.app/Contents/Resources/web-client/js/9879-9879-56152506a5288b6b1bee-plex-4.142.1-8a541f3.js:2:751336",
  "name": "Error",
  "message": "Resolved after unmount"

The server is doing what it is supposed to and transcoding the file in question, then it complains that the rug was pulled out from under it and the session was whacked.

That seems to indicate that the issue is with the Plex for Mac OS app.

The Plex for Mac OS logs complain of an unknown error and then it simply stops. Unfortunately, I am not knowledgeable enough to decipher the Plex for Mac OS logs correctly.

I will ask @ChuckPa if he can pass this on to the appropriate folks at Plex.

With a little luck, they may be able to help you further.

9

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