[Bug 712134] Text stream generated by appsrc into kateenc loses subtitle encoding

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=712134
  GStreamer | gst-plugins-bad | 1.x

Vincent Penquerc'h <vincent.penquerch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
                 CC|                            |vincent.penquerch at collabora
                   |                            |.co.uk
         Resolution|                            |FIXED

--- Comment #8 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2014-01-09 18:33:24 UTC ---
Fixed by writing codec ID and private data at start, when they are known, as is
done for audio and video. Not sure just why subtitles were treated differently
(can these become known *later* ?), but the code is still there if anything
else depends on it.

Tested with the gst-launch line give above.

commit 1c6ee3fba47fb8efb8c312239cc9cb7673371351
Author: Vincent Penquerc'h <vincent.penquerch at collabora.co.uk>
Date:   Thu Jan 9 18:25:04 2014 +0000

    matroskamux: write subtitle codec ID and data at start when known

    This avoids issues with writing dummy data first, then having
    to come back and write correct data later. Doing so prevents
    the muxed stream from being actually streamable.

    https://bugzilla.gnome.org/show_bug.cgi?id=712134

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