Probably a bug in mkvmerge/mmg: srt subtitles in mkv v2 lacks block duration information
Original reporter: yaroslav.isakov@gmail.com
Please see the http://bugzilla.mplayerhq.hu/show_bug.cgi?id=669
Cite: The v2 sample lacks block duration information for subtitles, and cannot be displayed correctly. With this file, mkvextract produces a .srt where all subtitles have zero duration. It seems like a bug in mkvtoolnix 1.8.1.
PS I'm was reporter of 669 bug
Edited by Moritz Bunkus