One Jellyfin file buffers even with strong server hardware

A home Jellyfin buffers badly on some video files, especially one specific file. Other videos at the same quality level start right away, both on the home network and from outside the home through .

The internet connection has 900Mbps upload speed, so does not look like the main limit. An RTX 3060 is dedicated to video , and GPU access through Docker is already working.

Most of the library is made of Blu-ray 1080p remux files. The issue is more likely tied to that file’s format, encoding, subtitles, audio track, or how Jellyfin decides to convert it, rather than the whole server being too weak.

Key points

  • Only certain Jellyfin media files buffer badly, not the whole library.
  • A similar-quality video plays instantly at home and through .
  • The server has 900Mbps upload speed, so simple shortage seems unlikely.
  • An RTX 3060 is passed into Docker and works for .
  • The library is mostly Blu-ray 1080p remux video files.
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