It's completely separate from #342448. It's not supposed to work yet AFAIK - for the same reason we don't do DVD subtitles yet (the dvdsubdec element doesn't work right yet).
-- play vobsub subtitles in matroska files https://launchpad.net/bugs/47056 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
