Hardware transcoding fails for 4k movies

[pau999 0]

Hi,

I have a video with the following format: 

 

When I try to watch this from my phone at a lower resolution of 1080p the transcoding fails with the following error:

14:37:01.263 [hevc_qsv @ 0xbe2c80] Error initializing the MFX video decoder: unsupported (-3)
14:37:01.263 Error while decoding stream #0:0: Function not implemented
14:37:01.263 [hevc_qsv @ 0xbe2c80] More data is required to decode header

This is happening once I changed the server to use advanced hardware transcoding with intel quick sync. I set up the server in a docker container and followed the steps provided in the link: https://emby.media/docker-server.html

Specifically, added GIDs to GIDLIST using the command

getent group video | cut -d: -f3
getent group render | cut -d: -f3

and also added this to my docker compose file.

    devices:
      - /dev/dri:/dev/dri # VAAPI/NVDEC/NVENC render nodes

 

However when I turn off the hardware acceleration, it does work. Attaching the logs.

ffmpeg-transcode-1d5ddbc5-fccb-487a-9c91-4fd42f875788_1.txt embyserver.txt

[Luke 37093]

Hi, for comparison purposes, are you able to test our native package for Ubuntu and see how that compares? Thanks.

[pau999 0]

Sure, Will do that. But another thing I noticed is when I set to just VAAPI, it works.

[pau999 0]

Checked the native package for ubuntu and i find the same error during transcoding

[Luke 37093]

On 4/3/2024 at 4:06 PM, pau999 said:

Checked the native package for ubuntu and i find the same error during transcoding

HI, can you please attach the emby server log, ffmpeg log file and hardware detection log files from then you did that? Thanks !

[Q-Droid 651]

Your Skylake CPU (6th gen) is right on that edge where it might be able to partially handle HEVC 10-bit in HW but not HDR. Not sure how that's handled in the current drivers and whether HW detection was right or wrong to attempt it.