Support for audio on webcams

Bill Davidsen davidsen at tmr.com
Mon Jun 14 02:49:46 UTC 2010


This may be related to x86_64 install, but I'm told there's an issue in 
32 bit as well.

I have a webcam, Logitech laptop model, and I'm trying to capture to 
sound and audio.
This is a log when connected:

Jun 12 14:24:23 posidon kernel: usb 4-2: new full speed USB device using uhci_hcd and address 3
Jun 12 14:24:24 posidon kernel: usb 4-2: New USB device found, idVendor=046d, idProduct=0991
Jun 12 14:24:24 posidon kernel: usb 4-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2
Jun 12 14:24:24 posidon kernel: usb 4-2: SerialNumber: 6230E413
Jun 12 14:24:24 posidon kernel: uvcvideo: Found UVC 1.00 device<unnamed>  (046d:0991)
Jun 12 14:24:24 posidon kernel: input: UVC Camera (046d:0991) as /devices/pci0000:00/0000:00:1d.3/us
b4/4-2/4-2:1.0/input/input5
Jun 12 14:24:24 posidon kernel: usbcore: registered new interface driver uvcvideo
Jun 12 14:24:24 posidon kernel: USB Video Class driver (v0.1.0)
Jun 12 14:24:24 posidon kernel: usbcore: registered new interface driver snd-usb-audio
Jun 12 14:24:24 posidon rtkit-daemon[2506]: Sucessfully made thread 3495 of process 2667 (/usr/bin/p
ulseaudio) owned by '500' RT at priority 5.

What I did on older versions of Fedora was to use the recording 
capability of xawtv. So I started that with device /dev/video2 (the cam 
with audio) and it gives no audio. It keeps looking for /dev/dsp 
(analog) even though docs say xawtv knows how to handle the new v4l2 
audio inputs. The only option for audio is -C and that is looking for an 
analog device.

So is there a trick to make this work, or is there another *simple* 
application to do a similar thing?
Ever since audio went digital it has been increasingly hard for non-guru 
users to use, and Pulse just adds to the complexity.
Tell me there's a simple application which just works the way they used to.


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