Transcoding Audio Only Stuttering

[designingbeing]

When transcoding audio only, playback pauses for 10-30 seconds every couple of minutes.

The machine is running Proxmox -> Debian 12 VM -> Docker -> Jellyfin

• CPU isn't spiking on the Debian VM
  
• Transcoding video and audio at the same time was working without pausing playback before I migrated to docker, haven't noticed any problems so far 
  
• Stuttering occurs at the same time as a spike in disk reads on the Debian VM and a spike in IO delay on the proxmox host
  
• Media is stored on a NFS mounted ext4 volume on a USB HDD
  

Debian VM
   

Proxmox Host
   


  jellyfin + ffmpeg logs.zip (Size: 125.47 KB / Downloads: 13)

Any ideas how to resolve this?

[TheDreadPirate]

Is the container using host networking or bridge networking?

[designingbeing]

Is the container using host networking or bridge networking?

Thanks for the reply.

The docker is configured to use host networking.



The issue is also present on a LXC running Debian 12. No docker, just a regular install of 10.10.6.

Hardware tanscoding is confirmed working in the LXC by selecting a low bitrate on the client.

Frequent pausing does not occur while video is being transcoded at low bitrate: 3mbit/s has no pausing, 5mbit/s has frequent pausing.

[TheDreadPirate]

Are transcodes also written to the NFS share? Or to a local disk? Does this issue happen on all clients? Or a specific client?