[vdr] softdevice and pass through - don't work

Hello VDR readers,

I try to use pass through with softdevice.

When I use the following options I get always the same error after start a 5.1 file:

# ac3play: sound open: no such file or directory.

I start the vdr with:

-P"softdevice -vo dummy: -ao alsa:ac3=iec958:AES0=0x02,AES1=0x82,AES2=0x00,AES3=0x2#"

or with the options in the setup.conf:

softdevice.AC3Mode = 1 softdevice.AlsaAC3Device = iec958:AES0=0x02,AES1=0x82,AES2=0x00,AES3=0x2 softdevice.AlsaDevice = default

When I run a 5.1 file with ac3dec all works fine.

What must I do to get the pass through?