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<TITLE> [Mageia-discuss] audio recording (from Line In) doesn't work in Mageia 2
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<H1>[Mageia-discuss] audio recording (from Line In) doesn't work in Mageia 2</H1>
<B>AL13N</B>
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TITLE="[Mageia-discuss] audio recording (from Line In) doesn't work in Mageia 2">alien at rmail.be
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<I>Sat Dec 29 21:07:56 CET 2012</I>
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<PRE>Op zaterdag 29 december 2012 14:07:23 schreef David Walser:
><i> David Walser wrote:
</I>><i> > Christiaan Welvaart wrote:
</I>><i> >> On Sat, 29 Dec 2012, David Walser wrote:
</I>><i> >>> I have an ATI TV Wonder VE video card which doesn't handle audio
</I>><i> >>> internally, it just pipes it out a 1/8" audio cable which you plug into
</I>><i> >>> the Line In input in the sound card, and you record the audio from that.
</I>><i> >>> For years, I've been using the script below to record TV from it. The
</I>><i> >>> aumix command sets the IGain mixer channel, which controls the volume of
</I>><i> >>> the audio that gets recorded. Up through Mageia 1, this worked fine.
</I>><i> >>> Now in Mageia 2, I get no sound.
</I>><i> >>>
</I>><i> >>> aumix -i 60
</I>><i> >>> mencoder -tv
</I>><i> >>> driver=v4l2:width=640:height=480:adevice=/dev/dsp:norm=ntsc:input=0
</I>><i> >>> <A HREF="tv://">tv://</A> -o tv.avi -oac mp3lame -ovc lavc -lavcopts>
</I>><i> > acodec=libmp3lame:abitrate=64:vbitrate=1800:vhq -lameopts vbr=3:br=64
</I>><i> > -srate 44100 -vf crop=608:456:14:10 > /dev/null 2>&1>
</I>><i> >>> aumix -i 0
</I>><i> >>
</I>><i> >> Well all kinds of things can be wrong. Does the TV card output sound?
</I>><i> >
</I>><i> > The TV card is fine, all that's changed is upgrading to mga2.
</I>><i> >
</I>><i> >> Maybe the input selector of the sound card is set to microphone.
</I>><i> >
</I>><i> > How would you check/change that? Why would it get messed up all of a
</I>><i> > sudden?>
</I>><i> >> Why are you using OSS instead of alsa directly?
</I>><i> >
</I>><i> > That's what mencoder uses. It should work fine.
</I>><i>
</I>><i> I tried changing adevice=/dev/dsp to the following things, which all also
</I>><i> didn't work: alsa:adevice=hw.0,0
</I>><i> alsa:adevice=hw.0,1
</I>><i> alsa:adevice=hw.0,2
</I>><i>
</I>><i> Here are the sound and TV devices from lspcidrake. This is smelling like a
</I>><i> kernel bug to me. snd_hda_intel : Intel Corporation|82801JI (ICH10
</I>><i> Family) HD Audio Controller bt878 : Brooktree Corporation|Bt878
</I>><i> Audio Capture [MULTIMEDIA_OTHER] (rev: 11) bttv : Brooktree
</I>><i> Corporation|Bt878 Video Capture [MULTIMEDIA_VIDEO] (rev: 11)
</I>><i> >> Try to get things working with alsamixer if aumix doesn't work...
</I>><i> >
</I>><i> > aumix seems to be working fine, it still sees the IGain channel and can
</I>><i> > set it just fine. I think something else is wrong.
</I>
it could still be that channels are being changed in kernel driver, perhaps
you can with alsamixer try to select the correct line-in function, and up the
volumes that could maybe have effect?
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