5.1 AAC not working using FFDShow under Windows 7

Discussion in 'Codecs, External Players' started by vaelyn, July 28, 2009.

  1. vaelyn

    vaelyn Portal Member

    Joined:
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    MediaPortal Version: 1.02 and 1.10alpha
    Windows Version: windows 7 x64 build 7600

    I have the following problem and hope that some of you might help me fix it:
    In those mp4 or mkv HD movies where the 5.1 sound in encoded with AAC I am unable to pass it correctly to my speakers (logitech z-5500 using Digital Coax Input). This only occurs in Windows 7.

    When I use FFDShow Audio Decoder as MediaPortal's AAC Decoder:
    http://bayimg.com/image/hacciaaco.jpg
    I get this error:
    http://bayimg.com/image/haccdaaco.jpg

    It plays fine when using either:
    MPC - MPA Decoder Filter
    or
    Microsoft DTV-DVD Audio Decoder
    However when I do that, it doesn't pass through the full 6 channels and my speakers get only stereo input.

    When I play the same file in MPC-HC it works fine, as can be seen in GraphEdit, it uses ffdshow and dxva (same as what I want in MP) and the speakers detect input as Dolby Digital, rather than stereo sound.
    http://bayimg.com/image/iaccdaaco.jpg

    -----------




    Edit: Managed to fix it by uninstalling absolutely every codec I had (including the ones integrated in Windows 7) and installing K-Lite 5.00 Mega followed by 5.02 update only. I'm now using DXVA with MPC Video Decoder and FFDShow Audio for both AC3 and DTS throughput.
     
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