Subtitles (PGS) not displayed or only for a fraction of a second
Hi...
I'm having trouble when playing .ts or .m2ts files with integrated Blu-ray subtitles (PGS/SUP).
At first I thought it's just a bad .sup file I muxed into the .[m2]ts, but then I found out it's VLC causing the problem.
When playing back such a .[m2]ts file with VLC, there are two different bugs that can be observed:
In some cases, when playing such a .[m2]ts file, VLC does NOT display the integrated subtitles at all OR they show up for such a short time, that no one is able to read them properly (I guess display time is only about 100ms or maybe even 1 single frame). This bug seems to be new.
In other cases subtitles are fine, aside from still-existing but tiny bug #3648 (closed).
New bug found in:
VLC 1.1.6
VLC 1.1.7
VLC 1.1.8
VLC 1.1.9
VLC 1.1.10-git (nightly build branch-20110511-0204)
When I reverted back to VLC 1.1.5, the subtitles are shown almost perfectly, only tiny thing is that they stay on screen too long (somewhere between 10 and 20 seconds) when there is no new subtitle to replace the previous one. This bug of 1.1.5 however is already documented in Ticket #3648 (closed), which is apparently NOT the same bug.
But something changed between 1.1.5 and 1.1.6 that often causes VLC's behaviour to switch from the bug described in Ticket #3648 (closed) to this new one. Should be relativly easy to track by source comparison.
I can supply a sample .ts file with the following properties:
-
lenght 2 min., 1280x720
-
2 AC3 audio tracks (DE/EN)
-
4 PGS subtitle tracks (DE-forced, EN-forced, DE, EN)
This sample file played back by VLC 1.1.5:
- only bug from Ticket #3648 (closed) (sub track 1-4)
This sample file played back by VLC 1.1.6 - 1.1.10-git:
-
bug from Ticket #3648 (closed) with subtitle tracks 1 and 2
(Na'vi translation in form of full-frame subtitle pics)
-
new bug from this ticket with subtitle tracks 3 and 4
(complete subtitles, only Na'vi parts consist of full-frame pics)
I'm not sure if this bug tracker can support an upload of 126 MB and if it is allowed to upload the sample, as the material - even being only 2 minutes "long" - is of course copyrighted, and I'm not in the business of spreading such content. So if the sample is required for bugtracking, please contact me by e-mail so we can transfer the file using trac or other methods.
Thanks in advance for looking into this problem.
Mark