[linux-dvb] ac3 playback - please help !!!

[Martin Hoffmann <ma.hoff@bigfoot.com>]

Hi,

i'm still trying to get the SB Live digital out running.

I have the following, and i really don't get why it does NOT work :-(

Maybe one of you has an idea, i guess it has something to do with stdin and pipes in linux - and i guess i'm not too familiar with it !
Any advice would be nice !

Let's see what i have:


First of all adding "-a 'cat > /video0/test.ac3' " to the commandline of vdr give me a file named test.ac3 with the dd audio played back in vdr !
That's okay!

After that a "cat /video0/test.ac3 | play-ac3 -" plays the sound via digi out - just as supposed to !
Thats okay too !
So obviously the recording contains ac3 audio, which is played back through vdr properly and the soundcard is also set up to use its digi out.

Now lets combine the two (that's what i need :-)
Adding "-a 'cat | play-ac3 -' " only gives the line "reading from stdin." on the console, which is right and shows that "play-ac3 -" has been called properly, but the digi out remains silent :-(
And that is what i don't understand !
It seems to me, as if the data stream isn't properly directed into the stdin of play-ac3  - but why ?

Anyone ?

btw: Some background info: vdr 0.84, latest emu10k1 drivers for the SB Live (including play-ac3)

 


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