DTS/Digital Playback through SPDIF. (1 Viewer)

Mish

Portal Member
August 10, 2006
15
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Area: Media Portal Program
MP Version: 0.2.0.0 (2006-07-03)
Windows Version: XPSP2
CPU Type: P4@2.0Ghz
Memory: 1GB SDRAM
Audio Codec Type & Version: I've tried about every combination.
Audio Card: MM Gear External USB Soundcard (MM-USC100)

Synopsis:

WinDVD7 plays DVDs out through SPDIF correctly.
The amplifier detects the DTS stream and plays it.

No codecs that I select in MediaPortal allow MediaPortal to playback DVD digital audio through SPDIF.
The closest I get is some codecs playback PCM through SPDIF.

I've tried every combination of filter (NVIDIA, Intervideo/WinDVD7, PowerDVD) and none of them seem to outout DTS through SPDIF in MediaPortal, yet WinDVD7 does perfectly when run standalone.
I've made sure all codecs are set to use SPDIF.

Can anyone suggest what I can do to troubleshoot this, or even better, a solution.
 

Brocklander

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  • September 15, 2004
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    I just set FFDShow as my audio decoder, and within FFDShow set DD and DTS to SPDIF. Easy as that!
     

    Mish

    Portal Member
    August 10, 2006
    15
    0
    If I set FFDShow to SPDIF for DTS and AC3 it will sometimes (one in maybe 30 times) work. Looking at GraphEdit it shows me various things (depending on what codecs are installed) connecting to DirectSound or WaveOut... As you'd expect.

    The confusing part for me is that when I play a DVD through SPDIF in WinDVD (Which always works and always outputs DTS/Digital/Dolby) it doesn't show up in GraphEdit, implying that it's doing something other than using its own filters?

    If I use the WinDVD Codecs in Media Player I get PCM sound output through SPDIF and it shows up in GraphEdit. If I use WinDVD standalone I get Digital Output through SPDIF but it doesn't appear in GraphEdit.

    Any suggestions, anyone?
     

    orencha

    Portal Pro
    February 2, 2005
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    Netanya
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    Mish,

    I also had this problems with SPDIF pass-thru. It seems like the menu sounds of MediaPortal, prevent SPDIF usage somehow.

    My solution: uncheck "Use GUI sound effects" in the MP config, and try again.
    It works for me (currently using FFDshow in "SPDIF" mode for both AC3 and DTS).
     

    Mish

    Portal Member
    August 10, 2006
    15
    0
    Yep, tried that, still no luck.
    WinDVD works fine, but using any codecs (even WinDVDs) in MediaPortal means only PCM gets output over SPDIF (at best, usually nothing).
    What really confuses me is that when I play a DVD using WinDVD it doesn't use any DirectShow filters, either it's hiding what it's using or it's outputting straight to SPDIF somehow.
     

    elorentz

    Portal Pro
    July 6, 2006
    58
    2
    HKEY_CURRENT_USER\Software\InterVideo\Common\AudioDec\"your app"\Audio = 6

    This should help you, exchange "your app" is the program that you use to play dvd's, in your case it should be "media portal". audio = 6 means change the reg key named audio to have the value 6.
     

    pierremenard
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  • April 6, 2006
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    Yep, tried that, still no luck.
    WinDVD works fine, but using any codecs (even WinDVDs) in MediaPortal means only PCM gets output over SPDIF (at best, usually nothing).
    What really confuses me is that when I play a DVD using WinDVD it doesn't use any DirectShow filters, either it's hiding what it's using or it's outputting straight to SPDIF somehow.
    I think it is your audio card needing to be set up. Does windows sounds (explorer clicks, flash applications etc) plays correctly over spdif? If not, you should set on your audio card control panel to use spdif as output. On my realtek (not really the state of the art) it worked. It's even possible to convert your analog input to digital and pass it through spdif, but you won't be able to use microphone if you do it so.

    F.

    MediaPortal Version: 2.0.0. Rev 9973
    Windows Version: Windows XP SP2
    CPU Type: Intel Celeron 2Ghz
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    Motherboard: MSI Hetis 865GV
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    Motherboard Bios: AMI Bios 5.1
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    Video Card Driver: Latest
    Sound Card: Onboard Realtek thour SPDIF
    Sound Card AC3: SPDIF
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    1. TV Card Driver: 1.3.3
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    NLS

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    April 26, 2006
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    HKEY_CURRENT_USER\Software\InterVideo\Common\AudioDec\"your app"\Audio = 6

    This should help you, exchange "your app" is the program that you use to play dvd's, in your case it should be "media portal". audio = 6 means change the reg key named audio to have the value 6.
    MediaPortal Version: 2.0.4 (will soon jump on the CVS train again)
    Windows Version: Windows XP SP2
    CPU Type: intel P4 @2.6GHz s478
    HDD: 320GB by someone
    Memory: 2GB DDR on 4x512MB (HT)
    Motherboard: Chaintech Zenith
    Motherboard Chipset: 875P+ICH5R
    Motherboard Bios: latest from Chaintech
    Video Card: Asus ATI 9800XT/256
    Video Card Driver: latest from ATI always
    Sound Card: on-board 7.1 (VIA Envy something)
    Sound Card AC3: has optical
    Sound Card Driver: latest from VIA Arena
    1. TV Card: Hauppauge PVR-350
    1. TV Card Type: analog, hardware
    1. TV Card Driver: latest from SHS
    2. TV Card: Skystar 2 on Hotbird 13E/Astra 19.2E
    2. TV Card Type: DVB-T, software
    2. TV Card Driver: latest from company
    3. TV Card: (planning on some DVB-T or more possibly hybrid)
    3. TV Card Type:
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    4. TV Card: no space for more :D
    4. TV Card Type:
    4. TV Card Driver:
    MPEG2 Video Codec: MPV usually, ffdshow assisted
    MPEG2 Audio Codec: MPA usually, ffdshow assisted
    Satelite/CableTV Provider: Astra 19.2 and Hotbird (soon)
    HTPC Case: Accent, aluminum, big enough for full-ATX and VFD
    Cooling: just plain stock AND unacceptably loud cooling (planning to change those)
    Power Supply: I don't remember, large enough
    Remote: Marmitek PC Control (IR/RF)
    TV: Amoi LC37AF1E, 37", 1920x1080 progressive 50/60Hz, dual-tuner, card-reader etc.
    TV - HTPC Connection: DVI-HDMI

    mine has value 7... what does it mean?
     

    elorentz

    Portal Pro
    July 6, 2006
    58
    2
    Some decoders, like windvd and powerdvd has problems setting the right spdif setting for 3 part apps, by manualle changing the before mentioned registry key you force the ,in this case windvd, decoder into spdif mode. If you have 7 and it works for you don't change it, if it does not work for you try to change it to 6, the values are for windvd 7, don't know if they are the same for earlier versions.
     

    NLS

    Portal Pro
    April 26, 2006
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    mine is the latest

    I will check if AC3 or DTS switches on my decoder (some time ago it did, haven't checked lately)
     

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