Intel 10500t transcoding 100% cpu, 1% gpu

Plex Media Server NAS & Devices
1

Hey guys,

I’m trying to figure out why my transcoding is chewing up my CPU, even with one 1080p stream.

Movie is stored on a NAS, I have a dedicated mobo,10500 processor & nvme drive just to run plex server and transcode.
I have plex pass, hardware acceleration & accelerated encoding is enabled.

Using gpuz I can see that the integrated gpu is idling and my cpu is at 100%. As far as I can tell this CPU should do well on hardware encoding settings, although I can’t figure out what I’m doing wrong.

Any help is appreciated, thanks!

Server Version#: 1.32.5.7349
Player Version#: chrome browser

2

Does it show (hw) being used in the dashboard when you’re transcoding?

9eb764b0cea8fac31ed5348d9e89ce821cec11e0 (2)

Is your server on a Windows machine or on your NAS?

Does it make any difference if you disable HDR tone mapping?

3

Thanks, that’s helpful. I do not see (hw) on my dashboard, it doesn’t seem like it’s doing hardware decoding.

The server is on its own windows machine, it’s only the files that are pulling from a NAS through a smb share.

HRD tone mapping doesn’t change anything.

4

Make sure in the settings you have debug only selected (not verbose)

Re-create the problem and wait a few minutes after playback stops

Gather your server logs from the troubleshooting section and drag the zip file into the box you type in

I don’t read logs well enough to diagnose that but someone else should be able to

Do you have any subtitles enabled during the failed streams?

BTW, to alleviate this issue temporarily you might want to use Plex for Windows instead of a Chrome browser

It handles a lot of media much better and you get a lot less files that need to be transcoded to begin with
https://www.plex.tv/media-server-downloads/#plex-app

5

Thanks, no subtitles.

Something very weird happened, the problem went away briefly - I even saw the gpu doing the work. After this single time working, it went back to the initial problem. From working to not working this all happened around the same time in the logs: 10pm - 10:05pm

Thanks again.

Plex Media Server Logs_2023-09-10_21-58-40.zip (3.5 MB)

6

Hardware transcoding for both Nvidia and Intel have been broken since the update in July when they added the option to choose the hardware and added AMD. If you go back and install 1.32.4.7195 it will work fine.

It would be nice if this was fixed but it has been crickets from the developers.

7

Hi, circling back here, I’m still getting the same issue of plex not using hardware transcoding.

I have tried reverting to Version 1.32.4.7195, the same thing happens.

How can I get plex to transcode using hardware? It’s almost unusable right now.

image
image694×606 62.9 KB

8

What happens if you try to transcode SDR video?

Your system is using Intel graphics.

On Windows based systems, Intel graphics are not supported for hardware accelerated tone mapping.

See HDR to SDR Tone Mapping.

9

I specced this server with a cpu that had intel quick sync specifically because it was recommended here for transcoding. Will a dedicated GPU work better?

10

If you need to transcode and tonemap 4K HDR media, you can (a) run Linux, or (b) add a Nvidia GPU (per the HDR tone mapping doc linked above).

The Nvidia Encode/Decode Matrix lists supported codecs.

  • You’ll want a card that can decode HEVC 10-bit 4:2:0 video.
  • Most GTX cards are limited to five simultaneous encodes by Nvidia (Some have no encode capability).
  • Most RTX/Quadro cards have no pre-set limit (some are limited to 0 or 3 encodes).
  • The limit is shown in the ENCODE section, in the “Max # of concurrent sessions” column (the limit is on encodes, decodes have no pre-set limit).

Elpamsoft has transcoding performance info for Nvidia GPUs.

A 1050Ti is the bare minimum. Many people use P2000s. See the “Streams for VMRAM” section on the Elpamsoft page. Basically, the more VRAM the better and avoid 2GB cards.

11

@FordGuy61 much appreciated. You pointed me in the right direction and after looking into all this I ended up first transcoding with a Nvidia gpu, and then moving to linux so I could use the intel gpu. Everything is working much better now, thanks.

12

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.