PLEX can't playback H.265

jrwagh333 · 3 Jul 2021 at 16:42

SERVER
Ryzen 3600
X570
OS drive - 500GB NVME
Storage - 4TB WD Red
Gigabit Ethernet.
Ubuntu Server 20.04

CLIENTS
Xbox Series X
Pixel 3
Chromecast Ultra (Controlled via Pixel 3)

ISSUE
Playback of H.265 content has micro-stutter (Looks like frame drops) on every Plex client apart from accessing via web browser.

Transcoding of media to H.264 media works absolute fine, but I am trying to resolve the H265 HVEC playback issue.

All clients Direct Play both audio and video. Server shows less than 10% CPU usage when delivering the H265 HVEC content.

I am at a loss because CPU usage is so low, so it can’t be a CPU bottleneck, nor a network bottleneck as the content is 1080p 4MBPS. It’s the HVEC X265 container that the server is struggling with. It’s like it’s missing a codec?

opethdisciple · 3 Jul 2021 at 19:28

Maybe your missing the multimedia codecs?

You can install them:

sudo apt install ubuntu-restricted-extras

jrwagh333 · 4 Jul 2021 at 21:14

opethdisciple said:
Maybe your missing the multimedia codecs?

You can install them:

sudo apt install ubuntu-restricted-extras

Thanks for this. I was going to try it but playback of H.265 content from the PLEX server onto my Chromebook works absolutely fine. It is only the XBOX and Android phone that is struggling

jrwagh333 · 12 Jul 2021 at 14:54

opethdisciple said:
Maybe your missing the multimedia codecs?

You can install them:

sudo apt install ubuntu-restricted-extras

Thanks for this. I finally got around to installing and trying it and now playback is perfect.

opethdisciple · 12 Jul 2021 at 23:25

jrwagh333 said:
Thanks for this. I finally got around to installing and trying it and now playback is perfect.

Good to hear it worked.