[Matroska-devel] Tagging MKV files

Dan Hinsley danhi at cox.net
Sat Sep 1 18:06:38 CEST 2012

Thanks for the quick feedback.  I suspect it's #3 that's causing my problem.
Just so I understand, is the SeekHead always contained in a Segment, and
then all offsets are from the start of that segment?

Thanks again for the help,


-----Original Message-----
From: matroska-devel-bounces at lists.matroska.org
[mailto:matroska-devel-bounces at lists.matroska.org] On Behalf Of Moritz
Sent: Friday, August 31, 2012 11:50 PM
To: Discussion about the current and future development of Matroska
Subject: Re: [Matroska-devel] Tagging MKV files


You've obviously done something wrong ;) Three things:

1. Look at your file with mkvinfo -v -v and look for "suspicious"
things. I cannot really be more precise; things like "unknown
elements" or "dummy element" would definitely be suspicious.

2. You can also use "mkvmerge --identify-verbose yourfile.mkv" before
and after your modification. It should show identical output safe for
the tags. However, this is a pretty superficial test, so you cannot
derive validity from a successful comparison.

3. The seek head positions they point to are relative to the segment
position! Check that with mkvinfo -v -v and compare it with known-good

Kind regards,
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