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How can I optimize my jellyfin, specifically transcoding and the CPU usage involved? I'm running it off a mini pc so resources are everything (sh.itjust.works)

submitted 8 months ago by StarvingMartist@sh.itjust.works to c/selfhosted@lemmy.world

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This is something that has been increasingly prevalent with my server, for the longest time I could torrent, have two people watching and everything's fine, but lately, especially with specific shows, it will take upwards of a minute for a show to start.

I've looked into it and the culprit is ffmpeg most of the time, I assume this has something to do with the specific files not having transcoding "baked in" but I don't know enough to know if that's the case. Can anyone help me optimize my pipeline at all?

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[–] rumba@lemmy.zip 11 points 8 months ago

If everything is working correctly, whether or not you transcode is basically whether or not the end device can play the file without changes.

For example, my old Roku can play a raw 4K File under H264 with no problem. But if I throw an H265 at it, it requires the server to transcode. It also has problems with AAC audio. And my server is so old that just trying to rip the 4k apart entrance to the audio is often too much for it.

So to start, make sure your client device can play the files directly. If it can't, you're going to need to handbrake it before you put it on your server.