[vdr] softdevice-0.5.0.20090218 and CVS: AC3 passthrough mode no longer working

ua0lnj ua0lnj at bk.ru
Tue Jun 2 15:29:34 CEST 2009


Hi

I use "-vo dfb:mgatv -ao alsa:pcm=plug:spdif#ac3=plug:spdif#"
I not receiving AC3 DVB channels, but DVD AC3 sound works fine, but not
DTS...

Yes, I have softdevice.AC3Mode = 1 - passthrough.



----- Original Message ----- 
From: "Lucian Muresan" <lucianm at users.sourceforge.net>
To: <vdr at linuxtv.org>
Sent: Monday, June 01, 2009 8:48 PM
Subject: [vdr] softdevice-0.5.0.20090218 and CVS: AC3 passthrough mode no
longer working


> Hi there,
>
> well, I haven't used softdevice anymore for a long time, because I had
> some
> strange video issues (only black screen with OSD, no video), and after I
> decided to start with a fresh new system on my VDR machine, now I'm giving
> vdr-1.7.7 a try, with the plugins that work already with it, softdevice
> being one of them.
> I tried this with softdevice-0.5.0.20090218 (as packaged in gentoo) and
> CVS,
> and my problem is that my external amplifier hooked up via optical SPDIF
> detects no signal when switching to AC3 audio tracks of channels or
> recordings. This works however when playing a video file with an AC3 track
> in fbxine for example. I mostly copied over the settings from my old
> system,
> where even this ac3 passtrhrough with softdevice used to work. Here are
> some
> settings and outputs that might be relevant:
>
>
> In /etc/vdr/setup.conf, I have:
> CurrentDolby = 1
> DolbyTransferFix = 0  # don't know what this does, there is no difference
> UseDolbyDigital = 1
> UseDolbyInRecordings = 1
> softdevice.AC3Mode = 1 # should be passthrough, right?
>
>
> 'aplay -l' shows:
> **** List of PLAYBACK Hardware Devices ****
> card 0: CMI8738 [C-Media CMI8738], device 0: CMI8738-MC6 [C-Media PCI
> DAC/ADC]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CMI8738 [C-Media CMI8738], device 1: CMI8738-MC6 [C-Media PCI 2nd
> DAC]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CMI8738 [C-Media CMI8738], device 2: CMI8738-MC6 [C-Media PCI
> IEC958]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
>
>
> 'aplay -L' shows:
> front:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI DAC/ADC
>    Front speakers
> rear:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI 2nd DAC
>    Rear speakers
> surround40:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI 2nd DAC
>    4.0 Surround output to Front and Rear speakers
> surround41:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI 2nd DAC
>    4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI 2nd DAC
>    5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI 2nd DAC
>    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> iec958:CARD=CMI8738,DEV=0
>    C-Media CMI8738, C-Media PCI DAC/ADC
>    IEC958 (S/PDIF) Digital Audio Output
> null
>    Discard all samples (playback) or generate zero samples (capture)
>
>
>
> And the most important, the parameters given to the softdevice plugin:
> '--plugin=softdevice -vo dfb:mgatv -ao alsa:pcm=default#ac3=hw:0,2#'
>
> I have to mention that normal mpeg audio is decoded and sent as PCM to the
> SPDIF, only AC3 and only with vdr softdevice is the problem. I tried
> hw:0,0
> and hw:0,1 as well, but no sound. How to deal with this, did I miss
> something?
>
> Lucian
>
> _______________________________________________
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> vdr at linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
>
>




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