[MPlayer-dev-eng] [PATCH] add support of compression algorithm 3 in mkv demuxer

[Alexander Beregalov]

2008/5/7 compn <tempn at twmi.rr.com>:
>
> On Wed, 7 May 2008 02:24:48 +0400
>  "Alexander Beregalov" <a.beregalov at gmail.com> wrote:
>
>  > Specs from http://www.matroska.org/technical/specs/ :
>  > ContentCompAlgo         The compression algorithm used. Algorithms that have
>  > been specified so far are: 0 - zlib, 1 - bzlib, 2 - lzo1x, 3 - Header
>  > Stripping.
>  > ContentCompSettings    Settings that might be needed by the
>  > decompressor. For Header Stripping (ContentCompAlgo=3), the bytes that
>  > were removed from the beggining of each frames of the track.
>  >
>  > I have such file, it works for me.
>  >
>  > | + A track
>  > |  + Track number: 2
>  > |  + Track UID: 2
>  > |  + Track type: audio
>  > |  + Lacing flag: 1
>  > |  + Default flag: 1
>  > |  + Codec ID: A_AC3
>  > |  + Content encodings
>  > |   + Content encoding
>  > |    + Content compression
>  > |     + Algorithm: 3 (header removal)
>  > |     + Settings: length 2, data: 0x0b 0x77
>  >
>  > See an attachment.
>  > Please comment.
>  >
>
>  mplayer is slowly moving towards libavformat demuxers
>  can you check if mplayer -demuxer lavf file.mkv works for you
>  and if not, send a patch to ffmpeg to add support? :)
>
>  also uploading a small sample would be nice.
>
>  -compn
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>

No, it doesnot work.
I uploaded a file named atlantis405-test.mkv.