[vdr] [Fwd: Softdevice and AC3 Passthrough]

Dave inssomniak at mountaincable.net
Sun Nov 13 19:35:43 CET 2005


Stealing a line from the output of ac3dec, I came up with this:

-ao alsa:pcm=default#ac3=iec958:AES0=0x2,AES1=0x82,AES2=0x0,AES3=0x2#

this gives me AC3 passthrough, but Im open to suggestions on how to make 
this easier or why it works like this :)

Thanks!



Dave wrote:

> I tried with option
>
> -ao alsa:pcm=default#ac3=iec958#
> -ao alsa:pcm=default#ac3=spdif#
>
> Still get the error
> ac3play: Unable to update the IEC958 control: No such file or directory
>
>
>
>
> Nicolas Huillard wrote:
>
>> Dave a écrit :
>>  
>>
>>> softdevice cvs
>>>
>>> vdr 1.3.34
>>> kernel 2.6.14-rc3 using kernel ALSA drivers
>>>
>>> I have got softdevice working with sound via SPDIF for PCM, but cant 
>>> get
>>> AC3 to pass through to the decoder, mplayer and ac3dec both pass AC3 no
>>> problem, but with softdevice I get error:
>>>
>>> ac3play: Unable to update the IEC958 control: No such file or directory
>>>
>>> -P"softdevice -vo dfb: -ao alsa:pcm=default#ac3=hw:0,0#"
>>> -P"softdevice -vo dfb: -ao alsa:pcm=default#ac3=hw:0,1#"
>>> -P"softdevice -vo dfb: -ao alsa:pcm=default#ac3=plug:iec958#"
>>>   
>>
>>
>> I use :
>> -ao alsa:pcm=default#ac3=spdif#
>>
>> I think you're not that off : just remove "plug:" from the last one, to
>> get "ac3=iec958"
>>
>>  
>>
>
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