En effet certains mkv chez moi sont "reconnus" comme des fichiers (pas de petite icône de film), mais lorsque je les lancent pas de souci vlc les prend en charge.
Dans l'ordre :
General
Complete name : test.mkv
Format : Matroska
File size : 6.56 GiB
Duration : 1h 24mn
Overall bit rate : 11.2 Mbps
Encoded date : UTC 2010-09-06 16:19:03
Writing application : mkvmerge v4.1.1 ('Bouncin' Back') built on Jul 3 2010 22:54:08
Writing library : libebml v1.0.0 + libmatroska v1.0.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Muxing mode : Container profile=Unknown@4.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 24mn
Bit rate : 7 914 Kbps
Nominal bit rate : 8 140 Kbps
Width : 1 920 pixels
Height : 816 pixels
Display aspect ratio : 2.35:1
Frame rate : 25.000 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.202
Stream size : 4.65 GiB (71%)
Writing library : x264 core 104 r1713 c276662
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x2 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=8140 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
Language : French
Audio #1
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Codec ID : A_DTS
Duration : 1h 24mn
Bit rate mode : Constant
Bit rate : 1 510 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Resolution : 24 bits
Stream size : 909 MiB (14%)
Title : DTS 5.1
Language : French
Audio #2
ID : 3
Format : DTS
Format/Info : Digital Theater Systems
Codec ID : A_DTS
Duration : 1h 24mn
Bit rate mode : Constant
Bit rate : 1 510 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Resolution : 24 bits
Stream size : 909 MiB (14%)
Title : DTS 2.0
Language : French
Puis :
MPlayer SVN-r1.0~rc3+svn20090426-4.4.3 (C) 2000-2009 MPlayer Team
Playing test.mkv.
ID_VIDEO_ID=0
[mkv] Track ID 1: video (V_MPEG4/ISO/AVC), -vid 0
ID_AUDIO_ID=0
ID_AID_0_NAME=DTS 5.1
ID_AID_0_LANG=fre
[mkv] Track ID 2: audio (A_DTS) "DTS 5.1", -aid 0, -alang fre
ID_AUDIO_ID=1
ID_AID_1_NAME=DTS 2.0
ID_AID_1_LANG=fre
[mkv] Track ID 3: audio (A_DTS) "DTS 2.0", -aid 1, -alang fre
[mkv] Will play video track 1.
Matroska file format detected.
VIDEO: [avc1] 1920x816 24bpp 25.000 fps 0.0 kbps ( 0.0 kbyte/s)
ID_FILENAME=test.mkv
ID_DEMUXER=mkv
ID_VIDEO_FORMAT=avc1
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=1920
ID_VIDEO_HEIGHT=816
ID_VIDEO_FPS=25.000
ID_VIDEO_ASPECT=2.3529
ID_AUDIO_FORMAT=8193
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=6
ID_LENGTH=5049.16
ID_SEEKABLE=1
ID_CHAPTERS=0
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
ID_VIDEO_CODEC=ffh264
==========================================================================
Opening audio decoder: [libdca] DTS decoding with libdca
Stream with high frequencies VQ coding
AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio: 192000->192000)
ID_AUDIO_BITRATE=1536000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
Selected audio codec: [dts] afm: libdca (DTS-libdca)
==========================================================================
AO: [null] 48000Hz 2ch s16le (2 bytes per sample)
ID_AUDIO_CODEC=dts
Starting playback...
Exiting... (End of file)
ID_EXIT=EOF