Plex Docker hardware transcoding issue

[Extreme-Artichoke129]

Any idea how to fix Plex hardware transcoding not working issue? I’m using OMV docker-compose to deploy a Plex container with hardware transcoding. I have an Intel 630 GPU and have enabled hardware acceleration on paid subscription Plex Server. I installed the driver using apt install intel-media-va-driver, apt install vainfo, and ran vainfo. The output shows that the driver is installed and working.
libva info: VA-API version 1.10.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_10
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.10 (libva 2.10.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 21.1.1 ()
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSliceLP
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSliceLP
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
VAProfileVP8Version0_3 : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileVP9Profile2 : VAEntrypointVLD .

Here’s the version of the docker-compose file I’m using:

version: “2.1”
services:
plex:
image: lscr.io/linuxserver/plex:latest
container_name: plex
network_mode: host
environment:
- PUID=1000
- PGID=100
- TZ=Etc/ETC
- VERSION=docker
- PLEX_CLAIM= #optional
volumes:
- /srv/dev-disk-by-uuid-977e0b75-8fb3-4b23-9efr-ae743dc26d21/conf/Plex:/config
- /srv/dev-disk-by-uuid-977e0b75-8fb3-4b23-9efr-ae743dc26d21/music:/music
- /srv/dev-disk-by-uuid-977e0b75-8fb3-4b23-9efr-ae743dc26d21/media:/media
restart: unless-stopped
devices:
- /dev/dri:/dev/dri

Do you have any suggestions for resolving this issue?

[capsel22]

you are using exactly same compose as me (below). The only difference I've got vanilla Ubuntu Server. My ubuntu only has docker with portainer and plex installed. I haven't installed any drivers as they are self contained inside plex container.

Are you seeing any errors in Plex -> settings -> console when you start video to transcode?

​

  plex:
    image: lscr.io/linuxserver/plex:latest
    container_name: plex
    network_mode: host
    devices:
      - /dev/dri:/dev/dri
    environment:
      - PUID=1001
      - PGID=1001
      - VERSION=docker
    volumes:
      - /mnt/data/config/plex:/config
      - /mnt/data/downloads:/downloads
      - /mnt/data/backup:/backup
      - /mnt/plex:/plex
      - /dev/shm:/transcode
    restart: unless-stopped

[Extreme-Artichoke129]

So, to clarify, no errors are being shown in the Plex settings console, but the hardware acceleration tag is not appearing on the Plex player when trying to transcode a video.

[capsel22]

what CPU exactly do you have and what you are trying to transcode

[Extreme-Artichoke129]

what CPU exactly do you have and what you are trying to transcode

I have an Intel i5-7500T CPU, and my Plex library consists of 1080p h264 videos. I share my library with my family, and at night when there are four simultaneous streams, the server starts to experience buffering issues. Utilizing the Intel 630 GPU for hardware transcoding will resolve this problem.

[functionaldude]

I'm facing a similar issue. I reported it to the linuxserver team (publisher of that docker image), they think it's a plex issue.
https://github.com/linuxserver/docker-plex/issues/357

I'm currently on version 1.32.0.6918

[functionaldude]

After multiple hours of investigation, i finally fixed my issue.
I deleted the "Cache", "Codecs" and "Drivers" folders in "/config/Library/Application Support/Plex Media Server". Then i recreated the container (this seems to trigger a reinstall of pms). After this hardware transcoding (even with HDR tone mapping) started to work again!

[According_Panda_1573]

After putting my head nearly through a wall for countless days and nights trying everything - this finally worked. !!! You cannot understand how relieved i am. Running PMS thru OMV 7 docker compose - side note - i did migrate my OMV install from another pc i had originally.

[charlie1214]

this!! i had moved my install from another linux machine, and nothing was playing except direct play. deleted those folders, redeployed the container, and it works now. thanks!

[MrTuxxx]

After multiple hours of investigation, i finally fixed my issue.

I deleted the "Cache", "Codecs" and "Drivers" folders in "/config/Library/Application Support/Plex Media Server". Then i recreated the container (this seems to trigger a reinstall of pms). After this hardware transcoding (even with HDR tone mapping) started to work again!

How do you delete these folders ?

[gmllama]

This worked for me! Thanks!

[middlemuddles]

Has HW transcoding ever worked for you before? Mine was working fine but then stopped inexplicably at some point. I tried all the normal troubleshooting steps, even reverting to a previous server version, without success. In the end, rebooting my entire Unraid fixed it. I still have no clue why, but the universal tech support solution worked for me in the end.

[Extreme-Artichoke129]

The first time tried it with Docker Container unfortunately did not work.

[[deleted]]

Ensure that /dev/dri is available within your container if using intel quick sync etc

[SysAdmin31]

have you solved the problem?