Am Dienstag, den 12.08.2008, 15:50 +0200 schrieb Achim Frase: > Am Dienstag, den 12.08.2008, 14:25 +0100 schrieb Colin Guthrie: > > Achim Frase wrote: > > > If I try to record 5.1 sound with this command line the channels get > > > mixed up. > > > > > > gst-launch pulsesrc > > > device=alsa_output.pci_8086_284b_sound_card_0_alsa_playback_0.monitor ! > > > queue ! audio/x-raw-float,rate=44100,channels=6 ! audioconvert ! > > > vorbisenc quality=.8 ! oggmux ! filesink location=outtest.ogg > > > > > > If someone finds the time to look at it, that would be nice. > > > http://bugzilla.gnome.org/show_bug.cgi?id=547258 > > > > I think channel mapping is a bit of a black art. You may need to specify > > your own channel map when loading the alsa source.... although as you > > are using a monitor, you perhaps need a "remap source" module loaded > > (which is a shame as AFAIK, there is only a remap-sink module right now!). > > okay, interesting. > > > All that said, as it presumably works fine for output, you'd expect that > > recording from the monitor, you'd get a file that you could then output > > properly. > > Yes, my channel mapping seems to work quite good for playback > (out-of-the-box). But it is a bit tricky to record 5.1 Sound. > I was not able to record the sound properly with pacat. I have tried > some options but without much success. Sorry for the noise, I thought I give pacat a second try and now it works. I needed to set the channel mapping as options for pacat. What I don't understand is why the normal playback works without any extra options. I only set the default-sample-channels = 6 in the /etc/pulse/daemon.conf > > That said, I've had issues with oggs before where they get the mapping > > wrong :s > > Thanks for your help so far.
