MoonlitSanguineMay 7, 2024

Self-hosted Jellyfin CPU or GPU for 4K HDR transcoding?

https://lemmy.one/post/14127142

Self-hosted Jellyfin CPU or GPU for 4K HDR transcoding? - Lemmy.one

Hey everyone, I’m building a new server to run Jellyfin (with a few other services like Pi-hole) and I’m stuck on GPU or CPU transcoding. My main concern is smooth 4K HDR transcoding for 1 stream. I’ve been reading mixed advice online – some people say a strong CPU with good single-core performance can handle it, while others recommend a dedicated GPU. Should I focus my budget (~$1000AUD/$658USD) on a good CPU, or spend some of it on a dedicated GPU?

Show threadentropicdriftMay 7, 2024

You can easily do smooth 4K HDR transcoding with any modern Intel CPU with integrated graphics.

I have an Intel N100 and it can probably handle 2-3 4K HDR transcodes at once. Definitely more if they’re being transcoded down to lower resolutions. Encoding is the most intensive part of the process.

Show threadkhiMay 7, 2024

I don’t know where you’ve bought your N100 but i think it shouldn’t be able to do that. I have one too and it cant do even one 4k 10bit HDR transcode.

As i see in the results from the benchmarks we’ve gathered (here: gist.github.com/…/5da9b321acbe6b6b53070437023b844…), my experience seems to be the common one.

While de N100 is a great value and low energy processor for a jellyfin server (especially if you direct play everything as is my case), I think if the objective is 4k hdr 10bit it will fall short as in my experience it usually transcodes at 8-9fps.

results

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Gist
Show threadRehwyn

It’s not Jellyfin, but here’s my N100 simultaneously doing two 4K HDR transcodes. Neither stream had buffering.

May 10, 2024 at 4:07pmWeb
Show threadkhiMay 11, 2024
Yeah after seeing this and another very detail answer it looks line my settings are too demanding and that is causing a slowdown. Since i do direct playing on everything i might just turn them down for the one friend who seems to be always on the weirdest player that needs transcoding. Thanks all!!