AAC audio not supported?

I thought AAC was a supported format for MKV files but apparently it is not or I have made some error while enocding the files. Here is the info for one of the problematic files


C:\Documents and Settings\PcOne\Desktop\01.mkv
   General
      Unique ID : 204708154166548079381023635157331701821 (0x9A015B3CD4C4DD60A23BFCFA4C2B703D)
      Complete name : C:\Documents and Settings\PcOne\Desktop\01.mkv
      Format : Matroska
      File size : 91.8 MiB
      Duration : 23mn 56s
      Overall bit rate : 536 Kbps
      Encoded date : UTC 2008-07-17 11:19:39
      Writing application : mkvmerge v2.0.2 (‘You’re My Flame’) built on Feb 21 2007 23:40:55
      Writing library : libebml v0.7.7 + libmatroska v0.8.1
   Video #1
      ID : 1
      Format : AVC
      Format/Info : Advanced Video Codec
      Format profile : High@L5.1
      Format settings, CABAC : Yes
      Format settings, ReFrames : 8 frames
      Codec ID : V_MPEG4/ISO/AVC
      Duration : 23mn 56s
      Nominal bit rate : 500 Kbps
      Width : 640 pixels
      Height : 480 pixels
      Display aspect ratio : 4:3
      Frame rate : 29.970 fps
      Color space : YUV
      Chroma subsampling : 4:2:0
      Bit depth : 8 bits
      Scan type : Progressive
      Bits/(Pixel*Frame) : 0.054
      Writing library : x264 core 56 svn-676
      Encoding settings : cabac=1 / ref=5 / deblock=1:1:1 / analyse=0x3:0x133 / me=umh / subme=6 / brdo=1 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=5 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=500 / ratetol=1.0 / rceq=‘blurCplx^(1-qComp)’ / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30
   Audio #2
      ID : 2
      Format : AAC
      Format/Info : Advanced Audio Codec
      Format profile : HE-AACv2 / HE-AAC / LC
      Codec ID : A_AAC
      Duration : 23mn 56s
      Channel(s) : 2 channels / 1 channel / 1 channel
      Channel positions : Front: L R / Front: C / Front: C
      Sampling rate : 48.0 KHz / 48.0 KHz / 24.0 KHz
      Compression mode : Lossy


Any way of getting these files to work without rencoding them ?

TIA,

Nosx

Bump… Anyone ?

I’ve read somewhere that some variations of AAC (SMB?) do not work but I can’t find the link anymore.