dolby digital passthrough via SPDIF

Discussion in 'Desktop & Laptop Computers Forum' started by John_N, Feb 5, 2003.

  1. John_N

    John_N
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    Hi

    I've just set up my HTPC for a trial run.

    I have a sony HS10 projector linked via DVI to Radeon 9000 pro card.

    And a Philips Sonic Edge 5.1 linked via SPDIF to a Nakamichi AV amp.

    The visual side works fine and I get widescreen video OK.

    The audio side is sort of working - I am getting PCM stereo out of the card SPDIF so using the amplifier digital input I can hear all the windows sounds.

    However, when playing a DVD using winDVD, I just hear the sounds in 'stereo' (PCM audio being transmitted over the SPDIF link is stereo NOT 5.1 channels).

    I've tried enabling 'SPDIF out' on WINDVD - no joy. The sound just goes completely dead.

    Has anyone got any ideas about a player I could/should use or something I can do to make sure that I'm getting the full 5.1 channels passed through to my philips sonic edge card's SPDIF output?

    I don't have any wires connected internally in the case to the Philips 'SPDIF in' ports or anything by the way.

    Cheers
    John
     
  2. Gerbil

    Gerbil
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    I don't use WinDVD, but i seem to remember reading something about SPDIF output only working in WinDVD if hardware acceleration is disabled.

    Have you seen here
     
  3. John_N

    John_N
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    Hi Thanks for the ideas.
    No - didn't work. Like I said I get SPDIF digital output - it just is PCM audio which is 2 channels only. I'm not getting passthrough of the unaltered digital signal from the DVD.

    :(
     
  4. Tim Cooper

    Tim Cooper
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    Hi John,
    What operating system are you using?
    Cheers.
    Tim.
     
  5. John_N

    John_N
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    Hi
    I'm using windows 2000.

    I got it working anyway. I used a different DVD player. I downloaded a trial version of PowerDVD and it worked fine so I bought the full version online.

    System configuration is now:

    Windows 2000
    Radeon 9000 pro - DVI output to Sony HS-10
    Philips Sonic Edge 5.1 - SPDIF to Nakamichi
    ATI Remote Wonder remote control

    Player: PowerDVD

    This seems to do everything; I now get my DVD output in full 5.1 surround and I get system sounds in PCM stereo so it means that the system is controllable totally from the couch.

    Fantastic.

    I watched a movie last night and got concerned about image quality. Turned out I was watching it in 16 bit colour by mistake.
    Upping the colours to 32 bit made a big difference. The picture is very very good.

    My only concern is that in very slow pans, I see the picture judder a bit. Is this normal? It only happens in very very slow pans.
     
  6. Tim Cooper

    Tim Cooper
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    John,
    For the sp/dif to work in windows 2000 you need at least service pack 1 pref' 2.
    LMK if it works.
    Tim
     

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