Mis-rendered VOBSUBs. An issue since 2017

[Afullmark]

Server Version#: Version 1.21.0.3616
Player Version#: Plex for Android 8.9.2

This is an issue identified and confirmed by @anon18523487 (Nvidia Shield TV: Mis-rendered VOBSUBs (MKV, MPEG2) - #7 by anon18523487) , but never fixed, and found here: Nvidia Shield TV: Mis-rendered VOBSUBs (MKV, MPEG2)

The two samples provided back then still have the problem today:

Nvidia Shield TV: Mis-rendered VOBSUBs (MKV, MPEG2)

@“MovieFan.Plex” The same issue occurs on a number of other files too: Issue: VOBSUBS are malformed via the Plex app on the Nvidia shield TV; this issue is NOT present when using Plex for Kodi on the Shield TV or VLC on the Mac. Sample file: https://www.dropbox.com/s/nu5i8cqufub8oqr/The%20Damnation%20of%20Faust%20(1999).mkv?dl=0 Played via Plex app on the Nvidia Shield TV: [image] Played via VLC or Plex for Kodi: [image] I reported this back in February, is there any word on a fix? Paging…

and

Nvidia Shield TV: Mis-rendered VOBSUBs (MKV, MPEG2)

This only occurs on the plex app on the nvidia shield; iOS, plex media player on mac (even VLC) are all fine. In the Opera ‘Les Troyens’, at the line ‘the pure air of the fields’ the MKV with VOBSUBS is blurred or rendered incorrectly: But the file is not corrupted, and plays perfectly in VLC: [image] Doesn’t have the problem playing via Plex Media Player on the Mac: Here is a sample of where the problem is: https://www.dropbox.com/s/7fofja4ztqziv6g/Les%20Troyens%20(2000).mkv?dl=0 (21.…

Here are the links to the sample files, from the point of the error, mentioned in those two posts:
Les Troyens
https://drive.google.com/file/d/1dC5hYryDz455TYwW2Q25IbDa-SiLK7tj/view?usp=sharing

In the Opera ‘Les Troyens’, at the line ‘ the pure air of the fields ’ the MKV with VOBSUBS is blurred or rendered incorrectly:

There is NO mis-rendering present in either VLC or IOS using MPV:

The Damnation of Faust
https://drive.google.com/file/d/1wAR2TcVOhNiIzPfGHMZzQPweap1PKo_A/view?usp=sharing

There are no ‘lines’ or mis-rendering in VLC nor iOS using MPV:

@FlashMasta also had the same issues.

As a side note, the MPV plater used on iOS devices and the Apple TV, do not have this issue. This is purely an exoplayer issue. In my case, I use an Nvidia Shield TV.

[FlashMasta]

This was working at one point with the 6.13.7 release and then was broken again from 6.14 on. I still find it hard to believe that they cannot look at the code base changes from 6.13.7 to 6.14 and figure out what they broke.

[Afullmark]

I’ve never seen it work. You are probably going to have to upload samples to this forum for them to check.

[FlashMasta]

I have done that multiple times over the past couple of years. They have 100% verified the bug already but no clue on when they will fix it.

[Afullmark]

The misrendering was the only issue left for VOBSUBS on exoplayer. The Nvidia Shield has been perfect otherwise.

[Afullmark]

I’m wondering if this could get some attention, please.

[Afullmark]

@anon18523487 can you provide any update on this? It’s now the only remaining visual issue with VOBSUBs on platforms using exoplayer (the shield, in my case).

This is happening on a reasonably new release of Babylon Berlin; I can provide sample files and screenshots of that too, if required.

Nvidia Shield TV: Mis-rendered VOBSUBs (MKV, MPEG2)

No news. The devs are still looking but nothing is standing out as to the cause. They can reproduce and see the problem so they at least have something to test if they figure out the problem.

[anon18523487]

Sorry, I don’t have an update. It’s still listed as an open issue and waiting for the devs to get to it.

[Afullmark]

How long has it been open with Plex? Since I reported it in 2017?

The last update from you said devs couldn’t figure out the cause, not that they haven’t got to it yet.

[anon18523487]

Has it been that long. I don’t remember. I know there were some other issues that you identified that were fixed before. This specific one was looked at but they couldn’t find a cause at the time, and they haven’t had time to spend more time to investigate. Hopefully in the new year I can push them to take a look again.

[Afullmark]

Thanks. Yes, subtitles used to disappear and cause the android app to crash. That all got fixed. It’s just the rendering issue that remains. You have the samples from me and those from @FlashMasta but if you need anything else, then I’m happy to help.

[Afullmark]

Hi @anon18523487 here is a modern manufactured DVD with the same issue: ‘Babylon Berlin’ s3e2. The sample file is the exact place the issue occurs.

Sample file is here: https://drive.google.com/file/d/1_KcKY5yZyrKV31k_aoX6PaH5dyRVq2jZ/view?usp=sharing

There are two examples of misrender taken on the Nvidia Shield TV (you’ll notice there is a line through the top of the text):

And here are those same subtitles using plex on iOS (MPV player):

[anon18523487]

Thanks. That does look like the same issue you had reported.

[Afullmark]

Here are a few more. I think it can be considered a confirmed bug now. Pops up all over the place: a line going through or on top of the text.

Here is the sample file: https://drive.google.com/file/d/17cuqeGhd-NlIwUfIEL-7sc01DdGTak2Y/view?usp=sharing

Here is the link to the sample file: https://drive.google.com/file/d/1TQIXklAiLDgRksoH4HgZU2mP-RuKgSD2/view?usp=sharing

[Afullmark]

@anon18523487 the worst (or best) example example I have seen so far.

Sample file: https://drive.google.com/file/d/1LvWsW2nhwzTY8TdL3BY9LWsoaMNuzZeb/view?usp=sharing

[Afullmark]

Any update @anon18523487

[anon18523487]

No update.

[Afullmark]

Thank you for the update.