SOLVED: Playback failed due to a fatal player error.

[sumeszp]

  jellyfin logs.zip (Size: 73.86 KB / Downloads: 94)
I am trying to play the MKV file on my web browser but I am getting a fatal player error, same on my smartphone. But when I tried to play it on my Samsung TV everything worked fine. Here is ffmpeg log file: https://pastebin.com/1XcYkZf8

[TheDreadPirate]

Does the container have permission to write to where you mounted /cache?

Code:

[hls @ 0x55ca20fd11c0] Opening '/cache/transcodes/aafb203d653aeef9dad26c71c1b8f091-1.mp4' for writing^M
[hls @ 0x55ca20fd11c0] Failed to open segment 'aafb203d653aeef9dad26c71c1b8f091-1.mp4'^M
[out#0/hls @ 0x55ca1f629080] Could not write header (incorrect codec parameters ?): Permission denied^M

[sumeszp]

Yes, it has modify access

[TheDreadPirate]

What is the host OS? Debian 12? What version of Jellyfin are you running? Looks like 10.9.X. What are the hardware specs?

Can you share your docker compose?

[sumeszp]

I am using truenas scale. The Jellyfin version is 10.9.5. I have Intel i5-9400f, 16 GB of RAM DDR4 - 2600, mob is Asus Prime h310m-r r2.0, OS drive Maxtor Z1 500 GB, storage Seagate laptop thin HDD ST500LT012-1DG142. I don't know how to share docker-compose

[TheDreadPirate]

Can you share your full jellyfin log?

[sumeszp]

I can't put this on Pastebin because it exceeds the maximum size of 512 kilobytes per Paste

[TheDreadPirate]

Zip it up and attach it to a forum post.

[sumeszp]

I attached it

[TheDreadPirate]

In TrueNAS, can you share screenshots of your Jellyfin config page?

And it looks like you haven't setup hardware acceleration yet. But first we need to fix the existing issue with /cache.