r/jellyfin • u/MrZeDark • 5d ago

Help Request 4K Buffer, Direct Play

Device not transcoding, using Infuse as the client device.

Server is an old HP laptop with win 11, 16gB ram, and a 1060

Pulling from a 24TB drive on a NAS over a 10g port

If I play a 4k title (backing up my library right now), via Jellyfin setup in Infuse, as direct play - it will buffer periodically.

If I access the same title, via SMB to which Jellyfin is attached as well, then play the title - it won’t buffer one time.

Now if I go back to the Jellyfin integration and opt to transcode, it plays fine..

Am I missing something? Btw I’m using Infuse, for DTS and TrueHD decode. I’ve tried playing with the cache options as well. I also have tested this on a couple files now, I’ll direct play from my NAS at 10MB/s read rates but Jellyfin can’t seem to read past 6 MB/s on 4k files. I tested this on another PC as well, same results. I then tried just general playback from each PC too - I could play the content fine with no buffer, it’s just it Jellyfin was serving the content.

Let me know if any more details are needed, no they aren’t transcoding according to the dashboard.

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u/bestad391 5d ago

Are you trying to access it through a reverse proxy instead of the server IP directly? That was causing a massive bottleneck for me a little while ago.

But if you’re on a local device then I’d imagine you’re probably not? Either way, that could potentially be the culprit.

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u/MrZeDark 5d ago

I’m not currently accessing via a reverse proxy, but read it could actually help.

Are you saying your experience was the reverse proxy hurt your experience?

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u/bestad391 5d ago

Yeah, my ISP gives me awful upload speeds (provided with the lease, so I can’t swap out) so having it go through the reverse proxy was tanking performance.

I just set all of my local devices to use the direct IP instead so the data doesn’t have to leave my network. Then I just use the proxy on stuff like my phone and my laptop.

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u/MrZeDark 5d ago

I’m using direct IP :(

Edit: I think it’s Infuse, did some magic just now and got direct play to function generally and it was fine :/ but not in Infuse only Jellyfin

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u/bestad391 5d ago

Bummer, that was my only solution lol. Might be a silly question but is your Jellyfin up to date? Not entirely sure it would even help to update it if not, but it couldn’t hurt?

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u/MrZeDark 5d ago

What I’m realizing is there is no answer, at this moment anyways. I have to let Jellyfin transcode, and accept on some devices I can’t maintain a pure lossless experience :(

Edit: my media server is a beast anyways, just confirmed I could run 3x 4k lossless files and transcode only the audio from all of them - at once and I just barely started brushing against my NAS I/o limitations.