[Matroska-devel] EBML IRL survey

Dave Rice dave at dericed.com
Thu Oct 22 15:58:27 CEST 2015


Hi all,

For those who are very curious, I've started to do some analysis of Matroska files (running through about 100,000 of user-submitted ones in archive.org <http://archive.org/>). Currently I'm only about 1% of the way through this process. From the gathered data I'm mining out certain characteristics to see what is being done or has been done with ebml/mkv muxers. Eventually this will lead to testing of the in-development ebml/matroska implementation checker, MediaConch. Here's a few histograms of the initial findings, please let me know if you suggest any particular tests to add to this process.

Total EBML Header Size in bytes (histogram of # of occurrences and the value)
 905 24
 878 40
 133 47

Inclusion of EBMLVersion and EBMLReadVersion is about 50/50. About half of the sample set don't specifically use the Element and the other half set it to 1.

Same for EBMLMaxIDSize and EBMLMaxDataSize. Not used about half the time, the other times it is set to 4 and 8. I haven't seen any non-default values for these.

Histogram of matroska versions:
 443 1
 827 2
 646 4

What happened to matroska version 3? Is 4 considered 'released'?

So far, there is only one EBML and one Segment as the level 0 elements of the files. No VOID at level 0 (yet), never (yet) more than one level 0 element after the EBML Header.

Matroska timescale histogram
   3    "not written"
1913 1000000

Histogram of muxingApp
   3 
   1 Haali DirectShow Matroska Muxer 1.10.262.12
   1 IDMmkvlib0.1
   8 Lavf51.12.1
   1 Lavf52.31.0
   1 Lavf52.84.0
   1 Lavf53.24.0
   1 Lavf53.24.2
   3 Lavf53.31.100
   9 Lavf53.32.100
   1 Lavf54.29.104
   9 Lavf54.63.104
  23 Lavf55.12.0
  13 Lavf55.19.104
   6 Lavf55.40.100
   1 Lavf55.43.100
   1 Lavf55.48.100
   2 Lavf55.51.101
   2 Lavf55.7.100
   5 Lavf56.1.0
   3 Lavf56.4.101
  36 SUPER(C)   
   4 WonderShare Matroska Muxer
   6 libDivXMediaFormat 3.4.1.0004
   3 libebml v0.6.3 + libmatroska v0.6.3
 132 libebml v0.7.7 + libmatroska v0.8.0
 695 libebml v0.7.7 + libmatroska v0.8.1
   3 libebml v0.7.8 + libmatroska v0.8.1
  62 libebml v0.7.9 + libmatroska v0.8.1
   6 libebml v0.8.0 + libmatroska v0.9.0
  18 libebml v1.0.0 + libmatroska v1.0.0
   5 libebml v1.2.0 + libmatroska v1.1.0
   1 libebml v1.2.1 + libmatroska v1.1.1
  17 libebml v1.2.2 + libmatroska v1.3.0
 171 libebml v1.2.3 + libmatroska v1.3.0
  30 libebml v1.3.0 + libmatroska v1.4.0
 562 libebml v1.3.0 + libmatroska v1.4.1
  37 libebml v1.3.1 + libmatroska v1.4.2
  33 libmkv 0.6.5

Histogram of writingApp
   4 
  14 AVSMatroskaFile
   6 DivXMKVMux 3.4.1.0004
   3 HandBrake 0.10.0 2014112200
   8 HandBrake 0.10.1 2015030800
   1 HandBrake 0.9.6
   8 HandBrake 0.9.8
  24 HandBrake 0.9.9
  12 HandBrake 6548svn 2014112401
   1 HandBrake 6967svn 2015030601
   3 HandBrake svn3404
   3 Helix Producer MKV Output Plugin - MatroskaMuxer 1.0
   1 IDMmkvlib0.1
   8 Lavf51.12.1
   1 Lavf52.31.0
   1 Lavf52.84.0
   1 Lavf53.24.0
   1 Lavf53.24.2
   3 Lavf53.31.100
   9 Lavf53.32.100
   1 Lavf54.29.104
   9 Lavf54.63.104
  13 Lavf55.19.104
   6 Lavf55.40.100
   1 Lavf55.43.100
   1 Lavf55.48.100
   2 Lavf55.51.101
   2 Lavf55.7.100
   4 Lavf56.1.0
   3 Lavf56.4.101
  36 SUPER(C)   
   1 gdsmux
 104 mkvmerge v1.7.0 ('What Do You Take Me For') built on Apr 28 2006 17:20:19
  28 mkvmerge v2.0.0 ('After The Rain Has Fallen') built on Feb  7 2007 19:06:51
  62 mkvmerge v2.1.0 ('Another Place To Fall') built on Oct  9 2007 04:36:00
  79 mkvmerge v2.2.0 ('Turn It On Again') built on Mar  4 2008 12:58:26
   5 mkvmerge v2.2.0 ('Turn It On Again') built on Mar  4 2008 13:20:25
  58 mkvmerge v2.3.0 ('Freak U') built on Sep  8 2008 18:32:16
  10 mkvmerge v2.4.0 ('Fumbling Towards Ecstasy') built on Oct 11 2008 20:13:15
   4 mkvmerge v2.4.1 ('Use Me') built on Dec  5 2008 15:43:32
   2 mkvmerge v2.5.1 ('He Wasn't There') built on Feb 22 2009 18:19:47
   7 mkvmerge v2.5.2 ('Stranger in your Soul') built on Feb 28 2009 18:58:17
   4 mkvmerge v2.5.3 ('Boogie') built on Mar  7 2009 15:00:41
  50 mkvmerge v2.6.0 ('Kelly watch the Stars') built on Mar 24 2009 15:23:17
 101 mkvmerge v2.7.0 ('Do It Again') built on Apr 15 2009 00:27:10
   7 mkvmerge v2.8.0 ('The Tree') built on May 14 2009 09:28:39
 139 mkvmerge v2.9.0 ('Moanin'') built on May 22 2009 17:46:31
   2 mkvmerge v2.9.5 ('Tu es le seul') built on Jun  7 2009 11:07:07
   2 mkvmerge v2.9.5 ('Tu es le seul') built on Jun  8 2009 14:34:11
   7 mkvmerge v2.9.7 ('Tenderness') built on Jul  1 2009 18:43:35
   1 mkvmerge v2.9.7 ('Tenderness') built on Jul 13 2009 11:47:01
 144 mkvmerge v2.9.8 ('C'est le bon') built on Aug 13 2009 12:49:06
   8 mkvmerge v2.9.9 ('Tutu') built on Nov 25 2009 21:13:32
   3 mkvmerge v3.1.0 ('Happy up here') built on Jan 19 2010 12:09:24
  51 mkvmerge v3.2.0 ('Beginnings') built on Feb 12 2010 16:46:17
   6 mkvmerge v3.3.0 ('Language') built on Mar 24 2010 14:59:24
  15 mkvmerge v4.0.0 ('The Stars were mine') built on Jun  6 2010 16:18:42
   2 mkvmerge v4.3.0 ('Escape from the Island') built on Sep  5 2010 10:30:51
   1 mkvmerge v4.3.0 ('Escape from the Island') built on Sep 28 2010 23:42:10
   1 mkvmerge v4.6.0 ('Still Crazy After All These Years') built on Mar 10 2011 02:50:32
   3 mkvmerge v4.7.0 ('Just Like You Imagined') built on Apr 21 2011 01:13:14
   1 mkvmerge v4.8.0 ('I Got The...') built on May 24 2011 03:12:58
   1 mkvmerge v4.9.1 ('Ich will') built on Jul 11 2011 23:53:15
  16 mkvmerge v5.0.1 ('Es ist Sommer') built on Oct  9 2011 11:55:43
   1 mkvmerge v5.1.0 ('And so it goes') built on Feb  1 2012 11:32:58
   8 mkvmerge v5.2.0 ('I can't explain') built on Dec 18 2011 18:12:03
   2 mkvmerge v5.3.0 ('I could have danced') built on Feb  9 2012 10:38:07
   2 mkvmerge v5.5.0 ('Healer') built on Apr  6 2012 21:43:24
  10 mkvmerge v5.6.0 ('Kenya Kane') built on May 27 2012 16:44:04
 130 mkvmerge v5.7.0 ('The Whirlwind') built on Jul  8 2012 20:08:51
   1 mkvmerge v5.7.0 ('The Whirlwind') built on Jul 29 2012 15:12:35
  18 mkvmerge v5.8.0 ('No Sleep / Pillow') built on Sep  2 2012 15:37:04
   2 mkvmerge v5.9.0 ('On The Loose') built on Dec  9 2012 15:37:01
  13 mkvmerge v6.0.0 ('Coming Up For Air') built on Jan 20 2013 09:52:00
   1 mkvmerge v6.0.0 ('Coming Up For Air') built on Jan 20 2013 12:38:35
   2 mkvmerge v6.1.0 ('Old Devil') built on Mar  2 2013 14:32:37
   3 mkvmerge v6.2.0 ('Promised Land') built on Apr 28 2013 12:22:01
   2 mkvmerge v6.3.0 ('You can't stop me!') built on Jul 10 2013 08:40:50
   7 mkvmerge v6.3.0 ('You can't stop me!') built on Jun 28 2013 20:09:41
   4 mkvmerge v6.4.1 ('Omega Point') built on Sep 16 2013 22:05:10
 358 mkvmerge v6.5.0 ('Isn't she lovely') built on Oct 20 2013 12:50:05
  12 mkvmerge v6.6.0 ('The Edge Of The In Between') built on Dec  1 2013 17:55:00
   1 mkvmerge v6.6.0 ('The Edge Of The In Between') built on Dec  1 2013 18:33:13
   4 mkvmerge v6.7.0 ('Back to the Ground') 32bit built on Jan  8 2014 15:03:17
   2 mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan  8 2014 15:10:52
  58 mkvmerge v6.8.0 ('Theme for Great Cities') 32bit built on Mar  2 2014 21:27:07
   2 mkvmerge v6.9.0 ('On Duende') 64bit built on Apr 18 2014 12:57:54
   6 mkvmerge v6.9.1 ('Blue Panther') 64bit built on Apr 18 2014 18:23:38
   3 mkvmerge v7.0.0 ('Where We Going') 32bit built on Jun  9 2014 15:08:34
   1 mkvmerge v7.1.0 ('Good Love') 64bit built on Jul 27 2014 13:06:55
  31 mkvmerge v7.2.0 ('On Every Street') 32bit built on Sep 13 2014 15:42:11
   4 mkvmerge v7.2.0 ('On Every Street') 64bit built on Sep 13 2014 15:52:10
   7 mkvmerge v7.3.0 ('Nouages') 32bit built on Oct 22 2014 18:44:01
  34 mkvmerge v7.3.0 ('Nouages') 64bit built on Oct 22 2014 18:53:34
  35 mkvmerge v7.4.0 ('Circles') 64bit built on Dec 12 2014 12:19:56
   1 mkvmerge v7.5.0 ('Glass Culture') 64bit built on Jan  4 2015 16:48:44
   1 mkvmerge v7.7.0 ('Six Voices') 32bit built on Feb 28 2015 23:23:00
  10 mkvmerge v7.7.0 ('Six Voices') 64bit built on Feb 28 2015 23:39:33
   1 mkvmerge v7.8.0 ('River Man') 64bit built on Mar 27 2015 16:31:37
  10 mkvmerge v7.9.0 ('Birds') 32bit
  12 mkvmerge v8.1.0 ('Psychedelic Postcard') 32bit
   2 mkvmerge v8.1.0 ('Psychedelic Postcard') 64bit

Best Regards,
Dave Rice
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