Transcoder Errors

Plex Media Server Desktops & Laptops
1

Ubuntu 22.04.4 LTS (GNU/Linux 6.5.0-26-generic x86_64) Seeing any transcoding issues?

Updated nvidia drivers and started getting transcoding error on a few movies that have otherwise worked just fine before.

Play back error. Error is Conversion failed. The transcoder exited due to an error.

Common theme they are 4K HDR10 (HEVC Main 10) movies. Everything else seems good.

Plexserver Version 1.40.1.8227
CPU: Intel(R) Core™ i9-10900X CPU @ 3.70GHz
Memory: 63973M
Swap: 2047M
Disk: 916G
CPU Load: 17.50, 12.49, 5.83
Free Memory: 6193M
Free Swap: 2046M
Free Disk: 916G
(and yeah I know its not lacking for hardware)

Hardware transcoding device is set to Auto but it sees the GP104 Geforce GTX1070.

Ideas?

2

DEBUG logs which capture the playback atttempt ?

Logs are always needed for transcoding issues. There are too many variables to guess.

3

Chuck do you want the whole zip log file with everything? or just specific logs? I am not sure what exactly I am looking for and in what log file.

Interestingly. I optimized one of the files for TV viewing and it seems to have corrected the error for that movie. I have not done so for the others.

4

https://support.plex.tv/articles/200250417-plex-media-server-log-files/

5

Sure, I know where the logs are I just want to know if chuck wants all of them or just specific log file. But thanks.

6

Attach the entire zip. :wink:

7

Plex Media Server Logs_2024-04-18_09-54-25.zip (5.1 MB)
Here you go.

8

This is the OS info:

Apr 18, 2024 07:22:43.408 [127109055892280] INFO - Plex Media Server v1.40.1.8227-c0dd5a73e - Ubuntu PC x86_64 - build: linux-x86_64 debian - GMT -04:00
Apr 18, 2024 07:22:43.408 [127109055892280] INFO - Linux version: 22.04.4 LTS (Jammy Jellyfish), language: en-US
Apr 18, 2024 07:22:43.408 [127109055892280] INFO - Processor: 20-core Intel(R) Core(TM) i9-10900X CPU @ 3.70GHz
Apr 18, 2024 07:22:43.408 [127109055892280] INFO - Compiler is - Clang 11.0.1 (https://plex.tv 9b997da8e5b47bdb4a9425b3a3b290be393b4b1f)

Which kernel is installed ?

Is this a VM ? Plex supports TigerLake CPUs (long time)
What does ls -la /dev/dri show for contents ?

Also please share groups plex output

Apr 18, 2024 09:47:47.108 [127106886675256] DEBUG - [Req#3f6a36/Transcode] Starting a transcode session mez6ymkg1o2yqwev6n0fyv8i at offset -1.0 (state=3)
Apr 18, 2024 09:47:47.108 [127106886675256] DEBUG - [Req#3f6a36/Transcode] TPU: hardware transcoding: enabled, but no hardware decode accelerator found
Apr 18, 2024 09:47:47.108 [127106886675256] DEBUG - [Req#3f6a36/Transcode] [Universal] Using local file path instead of URL: /plex/Data4/Kung Fu Panda 4 (2024)/Plex Versions/Optimized for TV/Kung Fu Panda 4 (2024).mp4
Apr 18, 2024 09:47:47.108 [127106886675256] DEBUG - [Req#3f6a36/Transcode] TPU: hardware transcoding: final decoder: , final encoder: 
Apr 18, 2024 09:47:47.109 [127106886675256] DEBUG - [Req#3f6a36/Transcode/JobRunner] Job running: FFMPEG_EXTERNAL_LIBS='/var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/Codecs/ad47460-4673-linux-x86_64/' X_PLEX_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "/usr/lib/plexmediaserver/Plex Transcoder" "-codec:#0x01" h264 "-codec:#0x02" aac -noaccurate_seek -analyzeduration 20000000 -probesize 20000000 -i "/plex/Data4/Kung Fu Panda 4 (2024)/Plex Versions/Optimized for TV/Kung Fu Panda 4 (2024).mp4" -map "0:#0x01" -metadata:s:0 language=eng -codec:0 copy -filter_complex "[0:#0x02] aresample=async=1:ochl='stereo':rematrix_maxval=0.000000dB:osr=48000[0]" -map "[0]" -metadata:s:1 language=eng -codec:1 aac -b:1 256k -f dash -seg_duration 5 -dash_segment_type mp4 -init_seg_name 'init-stream$RepresentationID$.m4s' -media_seg_name 'chunk-stream$RepresentationID$-$Number%05d$.m4s' -window_size 5 -delete_removed false -skip_to_segment 1 -time_delta 0.0625 -manifest_name "http://127.0.0.1:32400/video/:/transcode/session/mez6ymkg1o2yqwev6n0fyv8i/d04cd9f5-40d0-4b2d-abad-67ea10117339/manifest?X-Plex-Http-Pipeline=infinite" -avoid_negative_ts disabled -map_metadata -1 -map_chapters -1 dash -start_at_zero -copyts -vsync cfr -y -nostats -loglevel quiet -loglevel_plex error -progressurl http://127.0.0.1:32400/video/:/transcode/session/mez6ymkg1o2yqwev6n0fyv8i/d04cd9f5-40d0-4b2d-abad-67ea10117339/progress
Apr 18, 2024 09:47:47.109 [127106886675256] DEBUG - [Req#3f6a36/Transcode/JobRunner] In directory: "/dev/shm/Transcode/Sessions/plex-transcode-mez6ymkg1o2yqwev6n0fyv8i-d04cd9f5-40d0-4b2d-abad-67ea10117339"
Apr 18, 2024 09:47:47.109 [127106886675256] DEBUG - [Req#3f6a36/Transcode/JobRunner] Jobs: Starting child process with pid 1693043
9

FYI the file works now that it was optimized. The original file was the one crashing.

This is not a VM. I am running the desk top version of Ubuntu not server.

cnutter@PlexServer:~$ groups plex
plex : plex video render

cnutter@PlexServer:~$ ls -la /dev/dri
total 0
drwxr-xr-x 3 root root 100 Mar 18 14:42 .
drwxr-xr-x 20 root root 5100 Apr 15 17:52 …
drwxr-xr-x 2 root root 80 Apr 17 19:42 by-path
crw-rw----+ 1 root render 226, 0 Apr 17 19:42 card0
crw-rw----+ 1 root render 226, 128 Apr 15 17:52 renderD128

cnutter@PlexServer:~$ uname -r
6.5.0-26-generic

11

@chrisnutter627

Let’s try this.

  1. Stop Plex
  2. Go into the Codecs directory
  3. Remove all the files except the .device_id file
  4. Now go up into the Drivers directory
  5. Delete everything
  6. Start Plex
  7. Test again
12

Seems to be sorted out. Thank you Chuck.

13

Did those steps clear it?

14

Chuck, yes I can play all videos that were giving the transcoding error and not playing. Any idea why that was happening. It seemed out of the blue. The only thing I noticed was a driver update a day or so ago.

1 Like
15

I’ve seen rare cases where driver updates don’t complete successfully.
This might be one of them.

16

Well, seems to be corrected. I will keep an eye on it. Thanks as always for the help. Chuck.

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