SOLVED: Help with transcoding

[Deegee88]

Hello - i've recently moved my server over to ubuntu desktop and installed jellyfin via a portainer stack.
I have an A380 which i'm trying to set up for encoding but it seems very sluggish.

Stack code:
---
services:
  jellyfin:
    image: lscr.io/linuxserver/jellyfin:latest
    container_name: jellyfin
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Europe/London
      - JELLYFIN_PublishedServerUrl=192.168.4.86 #optional
    volumes:
      - /mnt/programs/jellyfinconfig
      - /mnt/programs/jellyfin/cachecache
      - /mnt/vault/showsshows
      - /mnt/vault/filmsfilms
    ports:
      - 8096:8096
      - 7359:7359/udp #optional
      - 1900:1900/udp #optional
    devices:
      - /dev/dri/renderD128dev/dri/renderD128
    restart: unless-stopped

Transcode log: https://sourceb.in/1pQo3NECMk

My system does have dual GPU's but i'm 90% sure that D128 is the A380 and not the other GPU (K2200 i believe).

Any help on what i'm doing wrong would be appreciated.

[TheDreadPirate]

Just pass in /dev/dri in its entirety. The Intel driver will then automatically select your Arc GPU. In a multi-GPU setup, which GPU gets assigned to which renderD number is random on reboots.

Code:

devices:
      - /dev/dri/:/dev/dri/

[Deegee88]

So as long as i have Intelquick sync selected in hardware encoding it'll know to use the A380?
At the moment I have HVEC, H264, VC1, AV1, HEVC 10bit & VP9 10bit selected to be decoded.
and encoding format is just HEVC - not AV1
Does that sound okay?

---

https://sourceb.in/IUCxzrlP3h

It is still extremely slow...

https://sourceb.in/DDpGovDOlc - another film title which is exactly the same.

[TheDreadPirate]

Correct. The Intel driver will automatically select your Arc GPU if you just pass in /dev/dri without specifying a particular renderD device.

Why not enable AV1 encoding?

Also, VC1 decoding is not supported. This table has all the codecs that Intel supports (the far right column).

https://en.wikipedia.org/wiki/Intel_Quic...d_encoding

Everything except VP8 and VC1.

[Deegee88]

No particular reason it was just setup that way.

Unforunately even with AV1 encoding and changing to /dev/dri it's still very slow.

It's actually quicker to disable hardware acceleration - which defeats the point surely?

[TheDreadPirate]

Can you share the ffmpeg log from the "slow" transcode?

[Deegee88]

Yup - i did post them above but here are 2:
https://sourceb.in/IUCxzrlP3h

https://sourceb.in/DDpGovDOlc

[TheDreadPirate]

Enable low power encoding (both check boxes). Its required for Arc.

[Deegee88]

Okay - so that has helped a bit but still not perfect. Compared to no hardware acceleration with speeds of 1.5 i'm not getting 0.4 (so double what it was!) but still with some buffering - especially when first starting up.

https://srcb.in/VSwr8VxCus

Is this normal?

[TheDreadPirate]

What kernel is your system running?  sudo uname -a

BTW, this is what you should be seeing.