Extreme PLEX Buffer Time on Large MKV Files

Plex Media Server Desktops & Laptops
1

Server Specs:

  • Intel Xeon E-2146G Coffee Lake 3.50 Ghz
  • 16 GB DDR4 SDRAM
  • 500 GB M.2 Drive
  • 4 TB Enterprise Class HDD 7200 RPMs
  • Ubuntu Server 18.04.2 LTS (No GUI)

Network:

  • Complete Ubiquiti Solution (USG, Switch, Access Point, Cloud Key)
  • ISP: 100 Mbps

Server Version#: 1.16.2.1297

Here is my problem, no matter what I use, PLEX Media Player, Roku PLEX App, FireTV PLEX App, they all have extremely long buffer times and I don’t understand why.

The best quality and load time is on my iPhone. Everything else, acts like its downloading the entire 28 GB file to play.

I’m hoping someone can help me because I’ve spent a lot of money to pretty much have a useless PLEX server.

2

How about we start with;

  1. Verify DEBUG logging is enabled; VERBOSE is disabled
  2. Recreate the problem on one of the devices.
  3. Play for 30 seconds then stop
  4. Wait 30 seconds for logs to settle
  5. Settings - Server - Download Logs
  6. Attach ZIP file here so I may see what’s happening.

There is one thing you’re NOT showing: A valid Plex Pass.

If you have HEVC transcoding happening, without a PlexPass, the CPU will do it and HEVC is the most difficult codec to decode. It will bring that mighty CPU to its knees in the blink of an eye. Add subtitles to that, if active, and it’s game-over.

3

Hi ChuckPA,

If a Plex Pass will fix this, I am more than happy to purchase one haha.

Logs are attached.

Plex Media Server Logs_2019-07-17_17-15-00.zip (909.8 KB)

4

Would you please hover over that movie and obtain the media Info ?

I see H.264 and very basic stuff in your log files which should not bury a 15000 passmark machine.

Also, since you’re using IPv4, you can turn IPv6 back off in Settings - Server - Network. All it does is give me double vision :wink: and this type of error.

Jul 17, 2019 15:23:47.060 [0x7f92d2ffd700] DEBUG - Transcoder segment range: 925 - 941 (941)
Jul 17, 2019 15:23:47.097 [0x7f930ffff700] WARN - NetworkServiceBrowser: Error sending out discover packet from ::1 to ff02::1%1: Network is unreachable
Jul 17, 2019 15:23:47.097 [0x7f930f7fe700] WARN - NetworkServiceBrowser: Error sending out discover packet from ::1 to ff02::1%1: Network is unreachable
Jul 17, 2019 15:23:47.098 [0x7f92f2ffd700] DEBUG - NetworkServiceBrowser: PLAYER arrived:
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Movie Info:

image
image703×457 17.4 KB

Turned off IPv6 :slight_smile:

New Logs:

Plex Media Server Logs_2019-07-17_17-58-19.zip (960.3 KB)

6

Do you need IPv6 on the host itself? Is it enabled?

I’m trying to discover if this is a problem with 1297 or not.

Yours is the 4th time today I have seen

Jul 17, 2019 17:58:03.796 [0x7f1e897fa700] WARN - NetworkServiceBrowser: Error sending out discover packet from ::1 to ff02::1%1: Network is unreachable
7

Please don’t change anything else. Working with my team member, we found a deployment failure. We discovered the wrong build was deployed and resulted in the errors you’re seeing.

When we discover the root cause, if human then there will be an appropriate flogging. :smiling_imp:

8

Haha I appreciate you!

9

This is the quickest way I can get you plexmediaserver_1.16.2.1321-ad17d5f9e_amd64.deb
This is what should have been deployed to public.

EDIT: Link removed. 1.16.2.1321 now public for all platforms.

1 Like
10

Thank you, thank you, and thank you! Everything works great now!

giphy

11

PMS 1.16.2.1321 is now deployed to public for all platforms.

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