How to display DVB subtitles in a WTV file

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martinu
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How to display DVB subtitles in a WTV file

Postby martinu » 02 Aug 2013 14:34

I have a variety of standard-def WTV files recorded by Windows Media Centre (Windows 7) from various UK broadcasters. How do I display subtitles? I think I've enabled subtitles but no text overlay appears.

It seems to be a bug when reading WTV files, because if I display a TS file which is generated from the WTV file, subtitles are displayed fine.

I'm using V2.0.7 of VLC.

VLC's Video | Subtitles Track is displaying the existence of "Track 1 - English" and Tools | Codec Information shows 3 streams:
0=Audio (MPEG 1/2/3, Stereo, 48 kHz, 256 kb/s)
1=Subtitle (DVB Subtitles DVBS)
2=Video (MPEG 1/2, 720x576x25, Planar 4:2:0)

Other programs such as Windows Media Centre and VideoRedo V4.21.2.665 can see and display the subtitles.

Are there any other settings in VLC that I need to check/change to make the subtitles actually be displayed.

Note that these are DVB subtitles embedded in the WTV file, not subtitles that are supplied in a separate SRT file.

Ludrax
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Forgotten

Postby Ludrax » 02 Aug 2013 15:22

I have a variety of standard-def WTV files recorded by Windows Media Centre (Windows 7) from various UK broadcasters
Unable to get closed captions
An' if ain't broke, then don't try to fix it...

martinu
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Re: Forgotten

Postby martinu » 02 Aug 2013 16:16

I have a variety of standard-def WTV files recorded by Windows Media Centre (Windows 7) from various UK broadcasters
Unable to get closed captions
Ah right. Looks as if this is a bug and that as of April, no bug had been raised.

How do I raise a bug so this gets looked at?

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Re: How to display DVB subtitles in a WTV file

Postby Ludrax » 02 Aug 2013 16:55

Report_bugs
note special quote
VLC development is closer to a bazaar than to a cathedral building, and while the core advances altogether, people, who are volunteers, work on what they want, and on the features they want.
An' if ain't broke, then don't try to fix it...

martinu
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Re: How to display DVB subtitles in a WTV file

Postby martinu » 02 Aug 2013 17:41

I've raised Ticket #9120 on Trac. Let's see what happens.

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Re: How to display DVB subtitles in a WTV file

Postby Jean-Baptiste Kempf » 20 Oct 2017 13:05

I've raised Ticket #9120 on Trac. Let's see what happens.
This is fixed in 3.0
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Re: How to display DVB subtitles in a WTV file

Postby InTheWings » 28 Jun 2018 10:13

- We don't know which captions are in WTV (avformat and WTV bug) https://trac.videolan.org/vlc/ticket/9443#comment:5
- Shown captions are then extracted from Video stream (avcodec decoder)
- Not on MacOS because hw decoding is using VideoToolbox which doesn't export captions
:!: If you want your problem to be solved :
* First read troubleshooting guide VSG:Main
* Always provide verbose LOGS ! (command line or from gui)
* Always check your issue against a developer build from Nightly Build of VLC
* Tell us when your problem is solved !

Jean-Baptiste Kempf
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Re: How to display DVB subtitles in a WTV file

Postby Jean-Baptiste Kempf » 28 Jun 2018 19:47

- We don't know which captions are in WTV (avformat and WTV bug) https://trac.videolan.org/vlc/ticket/9443#comment:5
- Shown captions are then extracted from Video stream (avcodec decoder)
- Not on MacOS because hw decoding is using VideoToolbox which doesn't export captions

Wow, that's unfortunate. Any way of doing it with VT?
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