Recording video and sound

[Wes Kurdziolek]

You might have to manually select the input the TV audio is coming in
on (which you know: line in, not mic), unmute it, and turn the volume
up beforehand w/ a tool like aumix.  TVtime knows to do this already. 
I ran into this problem a while ago while trying to use mencoder to do
what you're trying to do.

On 9/15/05, Thomas Kaiser (ubuntu) <ubuntu at kaiser-linux.li> wrote:
> Hello All
> 
> I have a Brooktree Bt878 TV card install in my box and use TVtime to
> watch TV. Now I would like to record TV with the CLI application
> streamer but I don't get sound. I was searching the Internet a lot but I
> couldn't get it work so far.
> 
> First of all, details about my hardware:
> - AMD64 Athlon 64 3000+
> - ASUS A8N-SLI Mainboard
> - Bt878 Video Capture
> - Bt878 Audio Capture
> 
> 0000:05:06.0 Multimedia video controller: Brooktree Corporation Bt878
> Video Capture (rev 02)
> 0000:05:06.1 Multimedia controller: Brooktree Corporation Bt878 Audio
> Capture (rev 02)
> 
> 
> The Sound in TVtime is working. I use the audio jumper cable for this.
> Thus, the sound goes to the line_in of my sound card.
> 
> Here is the first thing which looks somehow strange to me. After
> rebooting the box, I can adjust the volume of the line_in in the "Volume
> Control" with the "Line-in" switches, but also "Volume" has to be high.
> So it looks like "Volume" is the master control and "Line-in" is the
> slave. AFTER, I started TVtime the volume of line_in is only controlled
> by "Volume" (even TV time is not running anymore).
> 
> I see two sound devices:
> # ls /dev/ds*
> /dev/dsp  /dev/dsp1
> 
> I used "sox -w -r 448000 -t ossdsp /dev/dsp -t .wav test.wav" to see on
> which one I get the sound of the TV card. I used /dev/dsp and /dev/dsp1.
> But I cannot record any sound of one of this two interfaces.
> 
> I found out that it should be possible to get the sound direct from the
> pci bus with my card. The snd_bt87x should do the trick. And this module
> gets loaded during boot. So, I assume the /dev/dsp is the line_in of my
> sound card and the /dev/dsp1 is the sound from the TV card. Actually, if
> I unload snd_bt87x the /dev/dsp1 is gone.
> 
> Why do I can't record any sound either on /dev/dsp or /dev/dsp1?
> 
> How can I tell TVtime to use /dev/dsp1?
> 
> Or do I something completly wrong?
> 
> Thanks in advance, Thomas
> 
> 
> 
> 
> --
> http://www.kaiser-linux.li
> 
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