no audio with simplescreenrecorder

[Kevin Oberman]

On Fri, Apr 3, 2020 at 1:15 PM Hans Petter Selasky <hps at selasky.org> wrote:

> On 2020-04-03 19:29, Kevin Oberman wrote:
> > I am attempting to capture screen video with
> > multimedia/simplescreenrecorder and can't seem to record the audio. Video
> > is fine, but the audio silent. I have tried oth Pulse and ALSA to find
> only
> > silence.
> >
> > My system is an old ThinkPad T520 with Conexant CX20590 HDA audio.
> >
> > I select "Record audio" and, for ALSA, OSS. For Pulse, I select
> /dev/dsp0.
> >
> > Anyone have this working? Any clues appreciated!
>
> What is the output from mixer?
>
> Did you select the correct recording source?
>
> --HPS


Bingo! Well, sort of. I had "mic" as my record device and changes it to the
only other option, "monitor. Now I get sound, but I am getting both the
audio from the web site and from the microphone. I set the mic gain to 0:0,
but I still hear the sounds in the room. I'm just guessing that my audio
device setup is wrong.

I have the following mixer setup:
> mixer
Mixer vol      is currently set to 100:100
Mixer pcm      is currently set to 100:100
Mixer speaker  is currently set to 100:100
Mixer mic      is currently set to   0:0
Mixer rec      is currently set to   1:1
Mixer monitor  is currently set to  75:75
Recording source: monitor

I've tried tweaking various settings, but I can't avoid picking up room
sounds.  I would also like to record without thee speakers playing, but l
found no way to turn off the speakers and still get audio. Makes me wonder
whether the audio I was recording was picked up by the mic from the
speakers.

and the following  sound card setup:
# Setup headphones
# Out : speaker + headphones
hint.hdac.0.cad0.nid25.config="as=1 seq=15"
# In : mic + external mic
hint.hdac.0.cad0.nid35.config="as=2"
hint.hdac.0.cad0.nid27.config="as=2 seq=15"

I'm going to play with the "mic + external mic" setup though I did this
years ago and I think I had help.
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman at gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683