DS918+ HEVC Main 10 - buffering - problems with certain files

Plex Media Server NAS & Devices
1

I am writing you in private about that veriion of Black Panther you have.
I’ve seen it before. It contains something which not even a KabyLake (i7-7700) can play or my AppleTV 4K. The best we can deduce is the industry is trying to foce the discs to be played ONLY on approved players and not ripped.

How does Deadpool 2 play? Same issue?

If you go to the TV, install the “Speedtest” app, what does it report for speed? Does it report the speed you normally get from your ISP or something less?

2

I’ve checked speedtest on TV web browser seems like it doesn’t have a native app or it isn’t enable in my region.

On web-browser which isn’t optimized for such test on device it goes at 200mbps.
The issue is the same on Playstation 4 app. The same buffering. I am going to try Deadpool now.
I’ve played a 12mbps 1080p for 1:30h without any lag/issues So yeah FULL HD is working without issue. Not a hick-up and fast time-tracking.

Ok so the Black Panther one I should go for either my own encoding or 20 Mbps if I wish to see it using that verions. I get a closer version to today tech ?

3

At Deadpool I got conversion failed. The transcoder exited due to an error.

4

Black Panther yet it goes smooth 20 seconds then it goes from 2 to 2 , from 3 to 3 , and then again 2 to t2 seconds of buffer.
I will send you again some logs maybe they will help you more.

5

Moderator edit Logs removed

6

I hope these logs are more useful. I restarted the Plex server and tried PS4 + TV + Web Player. All buffer and WebPlayer auto adapts to 1080p 20mbps.

PS4 has direct a very thick CAT7 1gbit directly in gateway.

7

Alright.

Now for the really good test.

  1. Go get the “MediaInfo” for the actual video file.
  2. Look at ALL the embedded subtitles.
  3. If any are forced IMAGE subtitles, you have found the problem. Forced subtitles are going to FORCE CPU transcoding… and that cpu can’t do it.
  4. You will need use MkvToolNix to remux (not re-encode) and drop those subtitle streams you do not want or need. PGS subtitles and VOBSUB are images… Images MUST be burned. This is the root cause.

Edit. Save the orig before doing this then Analyze the media after so PMS is updated

10

The movies varriants have PGS subtitles as choice and .SRT that I was needed. I 've tried both. The variant also it is tagged as already Remuxed for this .SRT file. But I tried PGS subtitles without any success.

11

If you have made the PGS subtitles your choice, they will always be a problem on Synology (Insufficient CPU) until you pre-burn them into the image. After pre-burning, you will have either DirectPlay or DirectStream (only audio is converted)

PGS (image) subtitles must be burned into video because none of the players support subtitle overlaying in the player (none of the TV’s or devices have that capability).

SRT (text) subtitle overlay is supported by all the players and almost all the tvs and devices. This is why SRT, ASS, and SSA (text subtitles) are the recommended method.

12

Well in that case since my issue was with an SRT. You suggest burning directly into the image would fix most of issues with most of 4k videos?

13

Before you go burning SRT into your videos.

Check the player settings.
Make certain they are not set to Always Burn-in.

14

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