[Bug 752847] matroska mux doesn't write user-supplied tags unless the 'streamable' property is set

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=752847

Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |nicolas.dufresne at collabora.
                   |                            |co.uk
         Resolution|---                         |INVALID

--- Comment #1 from Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> ---
(In reply to Glen Diener from comment #0)
> User-supplied tags are not written out unless 'streamable=true' is set.
> Easily reproducible with gst-launch and mkvinfo.
> We'll try to but the tag comment=hello into the x.mkv file:
> 
> $ gst-launch-1.0 videotestsrc ! taginject tags=comment=hello ! matroskamux !

The problem is on your side. You don't set a finit number of buffers
(num-buffers=N) neither set the -e option to GST launch. That means you will
cause an incorrect termination of the recording, and the matroska header will
never be written to disk. Matroska files are still readable, but things like
seeking will be slow and tag lost.

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