Enabling DxVA and HWMC for hauppauge/intervideo decoders (1 Viewer)

Frodo

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  • April 22, 2004
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    This is a tip for people using the
    - Hauppauge mpeg2 decoder (comes with the Hauppauge PVR cards)
    - or the intervideo mpeg2 decoder (comes with WinDVD6)
    (this tip is copied from the GOTPVR forums)

    Their latest codecs have support for DxVA and HWMC

    So whats DxVA
    DxVA - DirectX Video Acceleration: DxVA is a standardized group of MPEG2 decoding video routines that are to be in a modern graphics processor's video engine. This allows modern video cards to accelerate the most CPU intensive parts of the MPEG2 decoding process, leaving the lesser parts of the decoding pipeline to the CPU. This can also simply be called Hardware Acceleration. For HDTV use DxVA accleration becomes critical as pure software decoding of HDTV streams requires a 3Ghz processor while only a ~2Ghz processor is needed with a DxVA compliant video card. Video cards that are DxVA compliant include the ATI Radeon family, the GeForce 4 MX and GeForce FX family.

    HWMC (Hardware Motion Compensation) is another more basic way that most graphics cards help deal with MPEG2 playback.

    So how to turn on these features?

    startup regedit (Start->run->regedit.exe)

    Set these two values to "1" and this will enable DxVA support and Hardware Motion Compensation.
    To do this you need a Radeon 7500+ or a GeForce 4MX or FX based card.

    HKLM\Software\Intervideo\Custom\Hauppauge\VideoDec\Dxva
    HKLM\Software\Intervideo\Custom\Hauppauge\VideoDec\Hwmc

    For the newer decoders the location is:
    HKLM\Software\IviSDK4Hauppauge\Common\VideoDec\Dxva
    HKLM\Software\IviSDK4Hauppauge\Common\VideoDec\Hwmc

    For the intervideo (WinDVD6) codecs the location is:
    HKLM\Software\InterVideo\Common\VideoDec\Dxva
    HKLM\Software\InterVideo\Common\VideoDec\Hwmc



    Frodo
     
    P

    premii

    Guest
    My TV crashes if i enable DxVA and HWMC for InterVideo.

    My Settings:
    Hauppauge Win250 driver: hcw2_2_22301_pp2,
    DXVA and HWMC enable for IviSDK4Hauppauge
    ATI Radeon 9800 video card
    MP 0.1.0.3
    WinDVD 6.0
     

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