Unable to Play Older AVI Files on Roku or Web (Just Started Happening)

Server Version#: 1.32.4.7195

I apologize as I’ve been a long-time lurker and haven’t posted much as I’ve usually just been able to find that I need in the forums or on Reddit /r/plex (which is currently protesting) when I have an issue, but this one has me stumped. Basically, older files I have in plex seem to be having trouble playing on Web player or on my Roku Ultra that were working fine previously. They give me different errors for the same file. When trying to play via PlexWeb, I get a “Conversion failed. The transcoder exited due to an error”. On the roku, it gives me a “Playback Error - Playback has stopped due to multiple playback errors. Check your connection and try again.”

Digging into the file types, the ones I spot-checked that are having issues appear to be AVI files with MP3 audio (if I’m reading the properties right). See attached debug log and MediaInfo dumps of a few of the files. Newer files (MKV, MP4, modern codecs) appear to be working fine.

Only “error” (as I’m not sure if it’s an error) was a line in the logs that says Got a request to stop a transcode session without a valid session GUID" right as I attempted to start the video.

I’m using Plex in a docker container on my Unraid server, it’s been running great for months after I was running for years on dedicated hardware. I tried setting it to transcode to RAM (as I recently upgraded hardware to include more powerful CPU and more RAM) to see that would help, it didn’t change the errors that happened. I tried downgrading a couple versions back and it was still giving few issues. I also removed the “Codecs” folder as some random threads/forums said to remove that, and the folder is getting re-created and 8217c1c-4565-linux-x86_64 being re-downloaded properly it appears.

Attached is the Mediainfo exports as well as my debug logs from my server.

Any help would be greatly appreciated.

MediaInfo3.txt (2.9 KB)
MediaInfo1.txt (2.8 KB)
MediaInfo2.txt (2.9 KB)
Plex Media Server Logs_2023-06-25_19-56-26.zip (395.4 KB)

Since I’m not getting any replies here, figured I’d post what I tried since I posted this that didn’t help:

  • Played the same file on a different server, no issue.
  • Removed the audio from a couple of the the files, they still wouldn’t play. Did the same with the video.
  • Tried just remuxing the file bits (audio/video) into an MKV container instead of AVI container.

For the record, I installed JellyFin on the same server (docker container) and it plays all the files just fine. But Plex just works, and is wife approved (the most important thing).

Thoughts/ideas?

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