Can't play movie (2160p HDR H265 mkv 90Gb) on Android/LG WebOS/PC Web

[Norrodar]

Hey TheDreadPirate, I'd a few days off, sorry

I also used my time to start over the whole jellyfin-topic.
Now my movies/series are all working!
Except on the web-client, where the 4k movies are laggy every 3-5secs for 1-2secs. CPU is only at 60%, Ram is at about 11/20Gb, HDDs 3-7Mb/s read/write.
The LG WebOS also has rarely lagging in moments where lots is happening on the image.
Android seems to be totally fine.

I'm trying to reproduce it and to generate a log.

All the best,
Norro

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For Googlers:

I'm using a Synology DS920+ NAS (20Gb Ram) with a "Cache-SSD" as Volume2 (see github-Repo for a howto) for my Docker-Containers (using Portainer).

My docker-compose (stack) looks like this:

Code:

services:
  jellyfin:
    image: jellyfin/jellyfin
    container_name: jellyfin
    environment:
      - TZ=Europe/Berlin
      - LIBVA_DRIVER_NAME=iHD
    network_mode: 'host'
    volumes:
      - /volume2/docker/jellyfin/config:/config
      - /volume2/docker/jellyfin/cache:/cache
      - /volume1/mediathek:/media
    devices:
      - /dev/dri:/dev/dri
    restart: 'unless-stopped'

For Jellyfin itself you have to use settings like this. You've to find out what your CPU is capable of, you can find a list here: https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video

Hardware Decoding
Enable hardware decoding for:

• H264
  
• HEVC
  
• MPEG2
  
• VC1
  
• VP8
  
• VP9
  
• HEVC 10bit
  
• VP9 10bit
  
• Prefer OS-native DXVA or VA-API hardware decoders
  

Hardware Encoding Options

• Enable hardware encoding
  
• Allow encoding in HEVC format
  
• Enable VPP tone mapping
  

Make sure to set the hardware acceleration to "Intel QuickSync (QSV)" in the Jellyfin settings under "Playback."