[solved] - No audio on certain codecs

Discussion in 'Codecs, External Players' started by alexanderfoti, October 20, 2018.

  1. alexanderfoti

    alexanderfoti Portal Member

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    Hi all

    I have a USB sound card with SPDIF out into a Denon AVR-1909.

    I have the LAV filters set to bitstream all codecs.

    I have no issues with DTS, AAC, AC3 but when playing things with Dolby Digital plus (e-ac3) they do not bit stream via SPDIF
    Oddly DTS-HD appears to work, but I do wonder if its downmixing that already (despite being ticked under bitstreaming)

    I know this is a limitation of optical SPDIF and that I need to use the HDMI input on the Denon. Is there a way to downmix to dolby digital over SPDIF until the new graphics card arrives?



    Thanks all
     
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  3. Owlsroost
    • Team MediaPortal

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    Not to
    LAV Audio decoder can downmix multi-channel audio to Dolby Pro Logic II (see the 'Mixing' tab, as below) which is probably the easiest thing to do if this is a temporary situation. You might not need the 'Enable Mixing' box ticked - I can't remember if this is necessary.

    upload_2018-10-20_19-28-27.png
     

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  4. alexanderfoti

    alexanderfoti Portal Member

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    Thanks, I thought so too, but down-mixing to Pro logic 2 still gives no sound in these files with e-ac3, not quite sure why.
     
  5. Owlsroost
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    Have you disabled bitstreaming for E-AC3? (LAV can only downmix it to Pro Logic if it decodes it)
     
  6. alexanderfoti

    alexanderfoti Portal Member

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    Sorry, that was it!! All working now.
     
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