[MPlayer-users] OT Audio routing in TV capture?

Bradley Alexander storm at tux.org
Mon Jan 20 21:56:41 CET 2003


On Mon, 2003-01-20 at 10:57, Luis.F.Correia wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> You CANNOT plug a lineout into a mic-in, it is not electricaly compatible.
> 
> Mic input expects very weak and feable signals, in the milivolt area whereas
> the
> lineout can output up to 150mv.
> 
> IF you build a voltage divisor, you might get away with it, but my guess is
> that you must edit the aumix settings to allow recording from another
> source.
> 
> read aumix man page, and I'm sure you will find the solution.
> 
> Now unplug the cable from the mic input before you screw up your sound card!

I did that, and plugged it back into line out. That also explains why
things sounded so overdriven. But that also begs the question of why
mencoder selects the mic-in rather than the line-in. I did a test where
I ran an mencoder capture and watched the aumix display. When the
mencoder session kicked off, changed it to record from the line-in
interface. On playback, the audio and video was very, very slow.

Obviously, I'm missing something fundamental, and I feel that I'm back
to square one. How or why is mencoder forcing the record device to
mic-in, and why am I get the strange record behavior when I switch it to
the correct device?

-- 
--Brad
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Bradley M. Alexander                |
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Debian/GNU Linux Developer          |   storm [at] debian.org
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