Stream seems to change (or audio decoder? who knows) the used audio format to float which is not supported currently.
00000003-0000-0010-8000-00aa00389b71 SUBTYPE_IEEE_FLOAT
Could you upload a sample of such file to:
The file is uploading... (a sample ...)
Generale
Nome completo : D:\Media\SerieTV\***720p.HDTV.mkv
Formato : Matroska
Dimensione : 21,0 Mb
Durata : 32s 800ms
BitRate totale : 5 360 Kbps
Data di codifica : UTC 2010-07-21 09:08:34
Creato con : mkvmerge v2.4.2 ('Oh My God') built on Jan 18 2009 17:30:28
Compressore : libebml v0.7.7 + libmatroska v0.8.1
Video
ID : 1
Formato : AVC
Formato/Informazioni : Advanced Video Codec
Profilo del formato : High@L3.1
Impostazioni del formato, CABAC : Si
Impostazioni del formato, ReFrames : 5 fotogrammi
Modalità di muxing : Container profile=Unknown@3.1
Codec ID : V_MPEG4/ISO/AVC
Durata : 32s 783ms
BitRate : 4 870 Kbps
BitRate nominale : 3 485 Kbps
Larghezza : 1 280 pixel
Altezza : 720 pixel
AspectRatio : 16:9
FrameRate : 23,976 fps
ColorSpace : YUV
ChromaSubsampling : 4:2:0
BitDepth/String : 8 bits
Tipo di scansione : Progressivo
Bit/(Pixel*Frame) : 0.220
Dimensione della traccia : 19,0 Mb (91%)
Compressore : x264 core 93 r1538 bd72d46
Impostazioni compressione : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / 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=1 / wpredb=1 / wpredp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=3485 / 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
Lingua : Inglese
Audio
ID : 2
Formato : AC-3
Formato/Informazioni : Audio Coding 3
Format_Settings_ModeExtension : CM (complete main)
Codec ID : A_AC3
Durata : 32s 800ms
Modalità : Costante
BitRate : 384 Kbps
Canali : 2 canali
Posizione dei canali : Front: L R
SamplingRate : 48,0 KHz
Dimensione della traccia : 1,50 Mb (7%)
Edit: note also with MPA decoder don't work
Imho next step should be:
1) Multi-channel support
2) Ac3 encoding through spd/if (not for me because I've an audio card with encoding embedded ...)
Italy