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Elias
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Joined: 26 May 2005
Posts: 17
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 Posted: Thu May 26, 2005 8:59 pm Post subject: MPEG-4/3GPP Timed Text Subtitles? |
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It is possible to choose the subtitles, and no error message pops up, but when opening the message window, this is what is being displayed:
| Quote: | main debug: control type=17
main debug: looking for decoder module: 24 candidates
main error: no suitable decoder module for fourcc `tx3g'.
VLC probably does not support this sound or video format.
main debug: killing decoder fourcc `tx3g', 0 PES in FIFO |
3GPP Timed Text and MPEG-4 Timed Text is exactly the same in the *.mp4 container, the fourcc/media sub type tx3g is being used for higher compatibility.
For more information on MPEG-4 Timed Text, check these links:
http://developer.apple.com/documentation/QuickTime/QT6_3/index.html
http://gpac.sourceforge.net/auth_text.php
http://haali.cs.msu.ru/mkv/ (the haali media splitter, can parse tx3g in the *.mp4 container, perhaps the developer of that parser can help out?)
I am using Windows XP SP2, and the latest VLC from the nightly builds.
Would be nice if this could be fixed. Thanks.
Last edited by Elias on Sun Oct 02, 2005 8:27 am; edited 1 time in total |
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Teetrinker
Cone that earned his stripes
Joined: 16 Aug 2004
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Elias
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Joined: 26 May 2005
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| Posted: Sat Aug 20, 2005 1:55 am Post subject: |
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| Has anyone actually cared to give this a look? I mean, a bugfix is what's needed here. |
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Teetrinker
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Joined: 16 Aug 2004
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| Posted: Fri Aug 26, 2005 8:47 am Post subject: |
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The sample is now in the incoming directory of the streams ftp too.
1Video_2Audio_2SUBs(timed text streams).mp4 |
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Guest
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| Posted: Fri Aug 26, 2005 12:33 pm Post subject: |
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| How did you create the sample? Was it with MP4Box? |
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Teetrinker
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Joined: 16 Aug 2004
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| Posted: Fri Aug 26, 2005 12:59 pm Post subject: |
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Yes, it was created with MP4Box. File Brand is ISOM without BIFS/OD Track.
In Osmo4 it look this way:
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Elias
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Joined: 26 May 2005
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| Posted: Fri Aug 26, 2005 1:20 pm Post subject: |
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| Teetrinker wrote: | Yes, it was created with MP4Box. File Brand is ISOM without BIFS/OD Track.
In Osmo4 it look this way:
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Osmo4 can play it. So can QuickTime (must be renamed to 3gp while running in QuickTime). |
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The DJ
Developer
Joined: 22 Nov 2003
Posts: 5527
Location: Enschede, Holland
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| Posted: Fri Aug 26, 2005 8:12 pm Post subject: |
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VLC currently does not yet support Timed Text. I'll create a ticket, and perhaps when i have time, i'll try to support it in the next release.
_________________
Videolan - VLC media player
Derk-Jan Hartman
Developer of the MacOS X port of vlc
http://www.videolan.org/vlc |
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Guest
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| Posted: Fri Aug 26, 2005 8:16 pm Post subject: |
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| The DJ wrote: | | VLC currently does not yet support Timed Text. I'll create a ticket, and perhaps when i have time, i'll try to support it in the next release. |
Great! How do I create tickets? |
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The DJ
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Location: Enschede, Holland
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bond
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Joined: 07 Dec 2004
Posts: 17
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| Posted: Sat Oct 01, 2005 8:27 am Post subject: |
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just for completeness: vlc already has some incompliant and unfinished support for CREATING mpeg-4 times text streams if i recall it correctly
afaik these vlc created streams already also play in vlc
so what would be needed would be to adopt the already existing implementation (written by fenrir afaik) to comply with the mpeg-4 specs |
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Elias
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Joined: 26 May 2005
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| Posted: Sat Oct 01, 2005 9:25 am Post subject: |
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| bond wrote: | just for completeness: vlc already has some incompliant and unfinished support for CREATING mpeg-4 times text streams if i recall it correctly
afaik these vlc created streams already also play in vlc
so what would be needed would be to adopt the already existing implementation (written by fenrir afaik) to comply with the mpeg-4 specs |
Yes, that would be great. The MPEG-4 specs you're talking about, is it with the 3GPP Timed Text fourcc (tx3g), or the more unused MPEG-4 Timed Text (can't recall what it was) fourcc?
Oh and by the way, stick to the standards, that's the best thing to do. Just my advice anyway  |
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bond
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| Posted: Sat Oct 01, 2005 9:49 am Post subject: |
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| 3gpp timed text and mpeg-4 timed text are identical. the mpeg-4 standard document basically only refers to the 3gpp one from what i remember |
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Elias
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Joined: 26 May 2005
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| Posted: Sat Oct 01, 2005 9:50 am Post subject: |
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Sample
I re-uploaded the mp4 file since the first one was deleted due to inactivity.
Here are some great developer documentation from Apple that really might help you out. The developer of MP4Box read them and he added more support for the MPEG-4 Timed Text into later builds of MP4Box. I'm not sure if Apple's developer documentation is 110% ISO MPEG-4 standard compliant (bond, you know if it is or not?), but seeing how Apple actually have been part of founding the mp4 container, and that they're quite ahead in the MPEG-4 support, I'd say that their word is to count on.
| Quote: | | 3gpp timed text and mpeg-4 timed text are identical. the mpeg-4 standard document basically only refers to the 3gpp one from what i remember |
What do you mean? Why create two identical standards? Sounds redundant and stupid.
Last edited by Elias on Sat Oct 01, 2005 1:41 pm; edited 1 time in total |
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bond
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Joined: 07 Dec 2004
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| Posted: Sat Oct 01, 2005 10:37 am Post subject: |
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apple's quicktime only supports timed text placed in .3gp! yeah, .3gp is nearly the same as .mp4, but still they dont support timed text in .mp4
why? dunno. they also support 6channel aac only in .mov, but not in .mp4, altough mov and mp4 is also very similar
using the same standard in both 3gpp and mpeg-4 is imho a very good thing as it should make interoperability easier and broader which is the point of standards after all |
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