Matroska plugin question

[Mikl]

Hello,

Thank you for developing this plugin.

I have a questions about it.

I am recording video from raw rgb data (coming from camera) with 2 subtitles tracks.

How i can set name of subtitle truck?

How i can set subtitle truck as default?

It is possible?

How i can do it?

For the moment i have this pipeline

for video

appsrc ! video/x-raw format=RGB,width=800,height=400,framerate=24/1 !  jpegenc ! matroskamux ! filesink location=c:\gstreamer\test.mkv 

for subtitles

appsrc ! text/x-raw format=utf8 ! matroskamux ! filesink location=c:\gstreamer\test.mkv 

In attachment you can see result of recording and my source code (c++ with some development garbage. sorry.) 

Video file itself can be found in dropbox https://www.dropbox.com/s/d7sd2ubars9wn91/1474357518134.mkv?dl=0

Thank you in advance for helping.

Best regards, Michael.

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[Sebastian Dröge-3]

On Di, 2016-09-20 at 13:59 +0000, Michael Yarochkin wrote:

>
> Hello,
>
> Thank you for developing this plugin.
> I have a questions about it.
>
> I am recording video from raw rgb data (coming from camera) with 2
> subtitles tracks.
>
> How i can set name of subtitle truck?
> How i can set subtitle truck as default?
> It is possible?
> How i can do it?

This needs some additions to the Matroska muxer, so that it writes
those from the information it gets from GStreamer. Default tracks are
marked in the stream-start event, title could be retrieved from the
TITLE tag.

--
Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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[Mikl]

Hello, Sebastian

Thank you for the answer.

But i did not understand HOW to do it?
I found THIS place in last matroska source code (matroska-mux.c line 2338), but did not found any way to change it.

-Set TITLE for pad, after linking source
-Set TITLE for source
-Make gst_object_set(...)
...

Sorry for stupid questions.