[solved] No audio on certain codecs (1 Viewer)

[alexanderfoti]

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

 

[Owlsroost]

Not to

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

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.

 

[alexanderfoti]

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.

 

[Owlsroost]

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.

Have you disabled bitstreaming for E-AC3? (LAV can only downmix it to Pro Logic if it decodes it)

 

[alexanderfoti]

Sorry, that was it!! All working now.