Black subtitle in HDR movies

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LeonTheBad
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Black subtitle in HDR movies

Postby LeonTheBad » 19 Jun 2019 07:41

When playing any 4K HDR movie, the subtitles show up black. Changing the setting does not work. It does not matter if the subtitle is embedded or loaded separately. It happens with all the HDR movies downloaded online.

3.0.6 and 3.0.7 show this problem, 3.0.4 shows subtitle correctly.

Lotesdelere
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Re: Black subtitle in HDR movies

Postby Lotesdelere » 19 Jun 2019 09:41

Please open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also upload a short sample of a problematic file to Zippyshare.com (200 MB max) or to WeTransfer.com and then post the link to the file here.
http://www.zippyshare.com
https://wetransfer.com

If needed cut it with DGsplit and read here about how to do it:
viewtopic.php?f=14&t=57724&p=193335#p193335
100 MB max should be enough.

LeonTheBad
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Re: Black subtitle in HDR movies

Postby LeonTheBad » 19 Jun 2019 10:25

https://pastebin.com/Aa2A2D3T

https://www28.zippyshare.com/v/8vEHm19A/file.html
This sample has got embedded subtitles, which shows up black. Loading other subtitles results the same.

unidan
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Re: Black subtitle in HDR movies

Postby unidan » 19 Jun 2019 13:54

It's a known issue but there is no fix for now. Subpictures like subtitles are not yet converted to movie colorspace and transfer function. The converters exist but it lacks some code to create them correctly.

reported here: https://trac.videolan.org/vlc/ticket/22447

sadimi4458
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Re: Black subtitle in HDR movies

Postby sadimi4458 » 23 Jan 2020 15:02

Is there any plan for a fix yet? I understand you must prioritize, but if the subtitles are completely black, they are basically useless. Apart from being very annoying, I also think it makes VLC a lot less useful :(

Novalis
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Re: Black subtitle in HDR movies

Postby Novalis » 09 Apr 2020 00:25

Guys it always easy to complain in the armchair...
but I must admit it is a killer. If you don't fix it the player is useless.
-1
Also all bluray menus are affected too.
-1

moret14
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Re: Black subtitle in HDR movies

Postby moret14 » 07 Jun 2020 18:54

I'm experiencing the same problem, still apparently no fix. Black subtitles are unreadable in most scene's and changing subtitle color in settings has no effect when HDR is engaged. Please fix this!

hilldoug750
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Re: Black subtitle in HDR movies

Postby hilldoug750 » 23 Jun 2020 05:09

I am having the exact same issue with Ultra HD Blu-Ray Menus. if I have HDR Turned On, the Menu is blacked out/incredibly dark. When I turn HDR off, it looks fine

Screenshots: https://imgur.com/a/1n0WYRN

Jean-Baptiste Kempf
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Re: Black subtitle in HDR movies

Postby Jean-Baptiste Kempf » 23 Jun 2020 14:58

I am having the exact same issue with Ultra HD Blu-Ray Menus. if I have HDR Turned On, the Menu is blacked out/incredibly dark. When I turn HDR off, it looks fine

Screenshots: https://imgur.com/a/1n0WYRN
You should file a bug about that.
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hilldoug750
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Re: Black subtitle in HDR movies

Postby hilldoug750 » 24 Jun 2020 02:42

I am having the exact same issue with Ultra HD Blu-Ray Menus. if I have HDR Turned On, the Menu is blacked out/incredibly dark. When I turn HDR off, it looks fine

Screenshots: https://imgur.com/a/1n0WYRN
You should file a bug about that.
I put one on https://trac.videolan.org/vlc/

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Re: Black subtitle in HDR movies

Postby Jean-Baptiste Kempf » 24 Jun 2020 20:14

Thx
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ndnenigma
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Re: Black subtitle in HDR movies

Postby ndnenigma » 07 Feb 2021 20:22

This problem still exists even in 3.0.12. I see people have filed a few bugs about this but the issue still exists. This is the only reason I have been using 3.0.4 for the past while. Considering something was broken by an update, hopefully it's not that difficult to fix in a timely manner.

nnnsqtr
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Re: Black subtitle in HDR movies

Postby nnnsqtr » 12 Nov 2021 16:57

This issue is still present in 3.0.16.

Tried 3.0.4 as someone suggested above, and the issue is NOT present there.

IceCool
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Re: Black subtitle in HDR movies

Postby IceCool » 23 Feb 2022 17:08

Year 2019 - black subtitles in HDR movies.
.
.
Year 2022 - black subtitles in HDR movies.
lol

Phillium
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Re: Black subtitle in HDR movies

Postby Phillium » 01 Mar 2022 01:05

Does anyone have a workaround for this? Kind of hard to play a movie if you can't navigate the menu.

Lotesdelere
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Re: Black subtitle in HDR movies

Postby Lotesdelere » 01 Mar 2022 13:13

You can create a new ticket on the VLC Trac with your above report, the link to your sample file (see post #2 of this thread) and the link to this thread:
https://code.videolan.org/videolan/vlc/-/issues

bobbsk724
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Re: Black subtitle in HDR movies

Postby bobbsk724 » 26 Sep 2023 10:16

there's a reddit post that says to use the opengl video output as a workaround. worked for me

Muyfa666
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Re: Black subtitle in HDR movies

Postby Muyfa666 » 27 Sep 2023 13:15

I just experienced this problem myself. Will create a ticket when I'm at home later.

In the meantime I found a workaround that I'd thought I'd share.

The OpenGL fix isn't good for me as it introduces choppy playback.

Instead I found that if I start the movie with HDR turned off, the subs are fine. If I turn on HDR while the movie is playing, the subs stay fine for the duration of the session. Not perfect, but at least it works for now and it's easy to do with hotkeys.

EDIT: I noticed there are open tickets about this issue in the tracker. Hopefully it gets fixed down the line. :-)

Mediawatcher
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Re: Black subtitle in HDR movies

Postby Mediawatcher » 02 Dec 2023 14:34

On 2 December 2023, the problem still exists with the latest version.. OpenGL helps, but at the same time HDR colors are lost from movies. So, if you want to get the full benefit out of 4K HDR movies, you have to use version 3.0.4 + direct3d11 output and hardware acceleration.


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