GNOME Bugzilla – Bug 140898
No writing application specified in matroska files created with matroska muxer
Last modified: 2004-12-22 21:47:04 UTC
The writing application element appears to be missing from the files made with the muxer. I don't think it's really required but some tools look for it for informational purposes.
Now it sets the writing application element to "GStreamer plugin version X.X.X".