<p><br>
> ><br>
> > To make sure that I have understood the problem correctly, I'll try<br>
> > to summarize it here: You have been happily capturing video and<br>
> > audio from a video capture card for some time now. The audio<br>
> > capture has been done by connecting the video capture card's audio<br>
> > output to a sound card's line-in using a physical loopback cable.<br>
> > The audio capturing has been done so far with direct alsa access<br>
> > without pulseaudio in the middle. This has been working fine, until<br>
> > recently it just stopped working.<br>
><br>
> You did understand the problem perfectly.<br>
><br>
> > What are the symptoms of the breakage? Do you get silence instead<br>
> > of real audio, or does mencoder refuse to do anything at all? Do<br>
> > you get any error messages from mencoder?<br>
><br>
> No error messages by mencoder, just recording silence!<br>
><br>
> ><br>
> tv=input=1:driver=v4l2:device=/dev/video0:normid=3:input=1:alsa=1:adevice=hw.0,2:audiorate=48000:amode=1:width=768:height=576<br>
> ><br>
> > The audio specific parts are: alsa=1 (use alsa) adevice=hw.0,2 (use<br>
> > direct hardware access with device 2 of card 0) audiorate=48000<br>
> > (audio sample rate) amode=1 (stereo)</p>
<p>afaik, pulseaudio does not use capture device 2 of your hda realtek alc88x for capturing as pulseaudio does not sopport multi streaming capture </p>
<p>did you select the "line in" in correct "input source" control ,the capture volume and unmute capture switch of device 2<br></p>
<p>Simple mixer control 'Capture',0<br>
Capabilities: cvolume cswitch penum<br>
Capture channels: Front Left - Front Right<br>
Limits: Capture 0 - 46<br>
Front Left: Capture 16 [35%] [0.00dB] [on]<br>
Front Right: Capture 16 [35%] [0.00dB] [on]<br>
Simple mixer control 'Capture',1<br>
Capabilities: cvolume cswitch penum<br>
Capture channels: Front Left - Front Right<br>
Limits: Capture 0 - 46<br>
Front Left: Capture 0 [0%] [-16.00dB] [off]<br>
Front Right: Capture 0 [0%] [-16.00dB] [off]</p>
<p>Simple mixer control 'Input Source',0<br>
Capabilities: cenum<br>
Items: 'Rear Mic' 'Front Mic' 'Line'<br>
Item0: 'Front Mic'<br>
Simple mixer control 'Input Source',1<br>
Capabilities: cenum<br>
Items: 'Rear Mic' 'Front Mic' 'Line'<br>
Item0: 'Rear Mic'<br></p>
<p>arecord -l <br>
**** List of CAPTURE Hardware Devices ****</p>
<p>> shm_open() failed: Permission denied</p>
<p>you have a customised asoundrc which use shm</p>
<p>card 0: SB [HDA ATI SB], device 0: ALC892 Analog [ALC892 Analog] <br>
Subdevices: 0/1 <br>
Subdevice #0: subdevice #0 <br>
card 0: SB [HDA ATI SB], device 2: ALC892 Analog [ALC892 Analog] <br>
Subdevices: 1/1 <br>
Subdevice #0: subdevice #0 <br>
card 2: CX8811 [Conexant CX8811], device 0: CX88 Digital [CX88 Digital] <br>
Subdevices: 0/1 <br>
Subdevice #0: subdevice #0</p>