[Matroska-devel] Anamorphic video plays as 3:2

Steve Lhomme slhomme at matroska.org
Sat Aug 20 10:15:08 CEST 2011


The correct way to play this file is 853x480 pixels, ie 16:9

On Fri, Aug 19, 2011 at 3:12 AM, Watcher <lists at on-track.ca> wrote:
>>
>
> The info
>
>
> + EBML head
> |+ Doc type: matroska
> |+ Doc type version: 1
> |+ Doc type read version: 1
> + Segment, size 240286424
> |+ Seek head (subentries will be skipped)
> |+ EbmlVoid (size: 3996)
> |+ Segment information
> | + Timecode scale: 1000000
> | + Muxing application: libebml v0.7.7 + libmatroska v0.8.1
> | + Writing application: mkvmerge v2.2.0 ('Turn It On Again')
> built on Mar  4 2008 12:58:26
> | + Duration: 1431.263s (00:23:51.263)
> | + Date: Sun Apr 26 15:02:05 2009 UTC
> | + Segment UID: 0x85 0xa8 0x0a 0x4a 0x21 0x6e 0xea 0x6f
> 0x85 0xe8 0x69 0x83 0x87 0x6d 0xf1 0x57
> |+ Segment tracks
> | + A track
> |  + Track number: 1
> |  + Track UID: 1131611014
> |  + Track type: video
> |  + Enabled: 1
> |  + Default flag: 1
> |  + Forced flag: 0
> |  + Lacing flag: 0
> |  + MinCache: 1
> |  + Timecode scale: 1
> |  + Max BlockAddition ID: 0
> |  + Codec ID: V_MPEG4/ISO/AVC
> |  + Codec decode all: 1
> |  + CodecPrivate, length 39 (h.264 profile: High @L3.0)
> |  + Default duration: 41.708ms (23.976 fps for a video track)
> |  + Language: und
> |  + Video track
> |   + Pixel width: 720
> |   + Pixel height: 480
> |   + Interlaced: 0
> |   + Display width: 853
> |   + Display height: 480
> | + A track
> |  + Track number: 2
> |  + Track UID: 792881594
> |  + Track type: audio
> |  + Enabled: 1
> |  + Default flag: 1
> |  + Forced flag: 0
> |  + Lacing flag: 1
> |  + MinCache: 0
> |  + Timecode scale: 1
> |  + Max BlockAddition ID: 0
> |  + Codec ID: A_AAC
> |  + Codec decode all: 1
> |  + CodecPrivate, length 2
> |  + Default duration: 21.333ms (46.875 fps for a video track)
> |  + Language: und
> |  + Audio track
> |   + Sampling frequency: 48000
> |   + Channels: 2
> | + A track
> |  + Track number: 3
> |  + Track UID: 3621949353
> |  + Track type: subtitles
> |  + Enabled: 1
> |  + Default flag: 1
> |  + Forced flag: 0
> |  + Lacing flag: 0
> |  + MinCache: 0
> |  + Timecode scale: 1
> |  + Max BlockAddition ID: 0
> |  + Codec ID: S_TEXT/ASS
> |  + Codec decode all: 1
> |  + CodecPrivate, length 1080
> |  + Language: und
> |+ EbmlVoid (size: 1024)
> |+ Attachments
> | + Attached
> |  + File name: gisha.ttf
> |  + Mime type: application/x-truetype-font
> |  + File data, size: 72932
> |  + File UID: 174024383
> |+ Chapters
> | + EditionEntry
> |  + EditionFlagHidden: 0
> |  + EditionFlagDefault: 0
> |  + EditionUID: 3751638146
> |  + ChapterAtom
> |   + ChapterUID: 4180662449
> |   + ChapterTimeStart: 00:00:00.000000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: On-Spot Filming (First Time)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3501511344
> |   + ChapterTimeStart: 00:00:35.577000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Introduction (First Time)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3171144100
> |   + ChapterTimeStart: 00:02:35.489000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Weight-Training Start (First Time)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3892135326
> |   + ChapterTimeStart: 00:03:06.019000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups (First Time)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3105298855
> |   + ChapterTimeStart: 00:03:48.770000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups (First Time)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3720898717
> |   + ChapterTimeStart: 00:04:23.346000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: After Weight-Training (First Time)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 44885934
> |   + ChapterTimeStart: 00:05:35.835000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Ending Scene 1
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1141046461
> |   + ChapterTimeStart: 00:06:35.937000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Introduction (Came Back Again)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3676670123
> |   + ChapterTimeStart: 00:07:00.670000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups (Came Back Again)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2392883601
> |   + ChapterTimeStart: 00:07:22.317000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups (Came Back Again)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 141537983
> |   + ChapterTimeStart: 00:07:44.422000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats (Came Back Again)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 560446601
> |   + ChapterTimeStart: 00:08:04.275000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: After Training (Came Back Again)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2522595982
> |   + ChapterTimeStart: 00:08:43.440000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Ending Scene 2
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3695657117
> |   + ChapterTimeStart: 00:09:43.541000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Hungry at Night (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3471934614
> |   + ChapterTimeStart: 00:09:56.763000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Camisole 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2804572548
> |   + ChapterTimeStart: 00:10:18.451000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Camisole 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 374831790
> |   + ChapterTimeStart: 00:10:58.157000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Lingerie 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2843673473
> |   + ChapterTimeStart: 00:11:19.846000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Gym Uniform 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 128758458
> |   + ChapterTimeStart: 00:11:41.534000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Eurobeat 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3500554657
> |   + ChapterTimeStart: 00:12:03.222000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Eurobeat 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 4114661813
> |   + ChapterTimeStart: 00:12:42.929000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Special A (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1058786218
> |   + ChapterTimeStart: 00:13:04.617000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Push-ups Special B (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1715744906
> |   + ChapterTimeStart: 00:13:26.305000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Camisole 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1245569192
> |   + ChapterTimeStart: 00:13:47.994000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Camisole 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1906346140
> |   + ChapterTimeStart: 00:14:27.700000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Lingerie 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 535115189
> |   + ChapterTimeStart: 00:14:49.388000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Gym Uniform 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1536549038
> |   + ChapterTimeStart: 00:15:11.077000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Sucking-in-Stomach 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 54320533
> |   + ChapterTimeStart: 00:15:32.765000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Sucking-in-Stomach 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2526299018
> |   + ChapterTimeStart: 00:16:12.471000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Special A (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 849328826
> |   + ChapterTimeStart: 00:16:34.160000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Sit-ups Special B (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3728166819
> |   + ChapterTimeStart: 00:16:55.848000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Camisole 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2463731891
> |   + ChapterTimeStart: 00:17:17.536000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Camisole 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1908471433
> |   + ChapterTimeStart: 00:17:57.243000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Lingerie 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2431692183
> |   + ChapterTimeStart: 00:18:18.931000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Gym Uniform 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3797758855
> |   + ChapterTimeStart: 00:18:40.620000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Breathing 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2899192715
> |   + ChapterTimeStart: 00:19:02.308000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Breathing 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 804111237
> |   + ChapterTimeStart: 00:19:42.014000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Special A (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 4090058640
> |   + ChapterTimeStart: 00:20:03.702000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Squats Special B (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1835093403
> |   + ChapterTimeStart: 00:20:25.391000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Bed 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 2869796226
> |   + ChapterTimeStart: 00:20:47.079000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Bounce 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1583836337
> |   + ChapterTimeStart: 00:21:08.767000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Bounce 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 925790369
> |   + ChapterTimeStart: 00:21:48.474000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Boobs 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 4273610625
> |   + ChapterTimeStart: 00:22:10.162000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Boobs 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 1478247040
> |   + ChapterTimeStart: 00:22:49.868000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Staring 12 Reps (Bonus)
> |    + ChapterLanguage: eng
> |  + ChapterAtom
> |   + ChapterUID: 3949401006
> |   + ChapterTimeStart: 00:23:11.557000000
> |   + ChapterFlagHidden: 0
> |   + ChapterFlagEnabled: 1
> |   + ChapterDisplay
> |    + ChapterString: Count Staring 24 Reps (Bonus)
> |    + ChapterLanguage: eng
> |+ EbmlVoid (size: 101)
> |+ Cluster
>
>
> Steve Lhomme <slhomme <at> matroska.org> writes:
>
>>
>> Please run mkvinfo to show what's in the file, not what software
>> interpret from it.
>>
>> On Wed, Aug 17, 2011 at 10:35 AM, Watcher <lists <at> on-track.ca> wrote:
>
>> > I have an anamorphic video that is playing in MPC-HC as 3:2. If I switch
>  MPC-HC
>> > to use the internal matroska filter is plays at the correct 16:9 so I
> assume it
>> > must be Haali causing the problem.
>> >
>> > The info collected below from Haali seems to show that is does recognize
>  it
>> > being anamorphic, but for some reason it is playing as 3:2. Note that the
> window
>> > does open to 16:9 initially for a fraction of a second before resizing to
> 3:2.
>> >
>> >
>> > Filter : Haali Media Splitter - CLSID : {55DA30FC-F16B-49FC-
> BAA5-AE59FC65F82D}
>> >
>> > - Connected to:
>> >
>> > CLSID: {04FE9017-F873-410E-871E-AB91661A4EF7}
>> > Filter: ffdshow Video Decoder
>> > Pin: In
>> >
>> > - Connection media type:
>> >
>> > Video: MPEG4 Video (H264) 720x480 (853:480) 23.98fps
>> >
>> > AM_MEDIA_TYPE:
>> > majortype: MEDIATYPE_Video {73646976-0000-0010-8000-00AA00389B71}
>> > subtype: Unknown GUID Name {31435641-0000-0010-8000-00AA00389B71}
>> > formattype: FORMAT_MPEG2_VIDEO {E06D80E3-DB46-11CF-B4D1-00805F6CBBEA}
>> > bFixedSizeSamples: 0
>> > bTemporalCompression: 0
>> > lSampleSize: 1
>> > cbFormat: 169
>> >
>> > VIDEOINFOHEADER:
>> > rcSource: (0,0)-(0,0)
>> > rcTarget: (0,0)-(0,0)
>> > dwBitRate: 0
>> > dwBitErrorRate: 0
>> > AvgTimePerFrame: 417083
>> >
>> > VIDEOINFOHEADER2:
>> > dwInterlaceFlags: 0x00000000
>> > dwCopyProtectFlags: 0x00000000
>> > dwPictAspectRatioX: 853
>> > dwPictAspectRatioY: 480
>> > dwControlFlags: 0x00000000
>> > dwReserved2: 0x00000000
>> >
>> > MPEG2VIDEOINFO:
>> > dwStartTimeCode: 0
>> > cbSequenceHeader: 37
>> > dwProfile: 0x00000064
>> > dwLevel: 0x0000001e
>> > dwFlags: 0x00000004
>> >
>> > BITMAPINFOHEADER:
>> > biSize: 40
>> > biWidth: 720
>> > biHeight: 480
>> > biPlanes: 1
>> > biBitCount: 24
>> > biCompression: avc1
>> > biSizeImage: 0
>> > biXPelsPerMeter: 720
>> > biYPelsPerMeter: 853
>> > biClrUsed: 0
>> > biClrImportant: 0
>> >
>> > pbFormat:
>> > 0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
>> > 0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
>> > 0020: 00 00 00 00 00 00 00 00 3b 5d 06 00 00 00 00 00 ........;]......
>> > 0030: 00 00 00 00 00 00 00 00 55 03 00 00 e0 01 00 00 ........U...à...
>> > 0040: 00 00 00 00 00 00 00 00 28 00 00 00 d0 02 00 00 ........(...Ð...
>> > 0050: e0 01 00 00 01 00 18 00 61 76 63 31 00 00 00 00 à.......avc1....
>> > 0060: d0 02 00 00 55 03 00 00 00 00 00 00 00 00 00 00 Ð...U...........
>> > 0070: 00 00 00 00 25 00 00 00 64 00 00 00 1e 00 00 00 ....%...d.......
>> > 0080: 04 00 00 00|00 1c 67 64 00 1e ac 34 e7 02 d0 f6 ......gd..¬4ç.Ðö
>> > 0090: ff c0 d5 40 b4 04 00 00 0f a4 00 02 ee 02 3c 58 ÿÀÕ@´....¤..î.<X
>> > 00a0: b6 78 00 05 68 ee b2 c8 b0                      ¶x..hî²È°
>> >
>> > - Enumerated media type 0:
>> >
>> > Set as the current media type
>> >
>> >
>> >
>> > _______________________________________________
>> > Matroska-devel mailing list
>> > Matroska-devel <at> lists.matroska.org
>> > http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-devel
>> > Read Matroska-Devel on GMane:
> http://dir.gmane.org/gmane.comp.multimedia.matroska.devel
>>
>
>
>
>
> _______________________________________________
> Matroska-devel mailing list
> Matroska-devel at lists.matroska.org
> http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-devel
> Read Matroska-Devel on GMane: http://dir.gmane.org/gmane.comp.multimedia.matroska.devel



-- 
Steve Lhomme
Matroska association Chairman



More information about the Matroska-devel mailing list