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Groups > comp.os.linux.hardware > #3376 > unrolled thread

Low audio in recorded videos with desktop screen recorders.

Started byant@zimage.comANT (Ant)
First post2019-02-17 17:24 -0600
Last post2019-02-17 21:03 -0600
Articles 4 — 2 participants

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  Low audio in recorded videos with desktop screen recorders. ant@zimage.comANT (Ant) - 2019-02-17 17:24 -0600
    Re: Low audio in recorded videos with desktop screen recorders. J G Miller <miller@yoyo.org> - 2019-02-18 00:46 +0000
      Re: Low audio in recorded videos with desktop screen recorders. ant@zimage.comANT (Ant) - 2019-02-17 20:35 -0600
        Re: Low audio in recorded videos with desktop screen recorders. ant@zimage.comANT (Ant) - 2019-02-17 21:03 -0600

#3376 — Low audio in recorded videos with desktop screen recorders.

Fromant@zimage.comANT (Ant)
Date2019-02-17 17:24 -0600
SubjectLow audio in recorded videos with desktop screen recorders.
Message-ID<p4CdnS62t96zcPTBnZ2dnUU7-I3NnZ2d@earthlink.com>
It seems like other Internet posters and I have problems with (e.g., Vokoscreen and 
Kazam for me) screen recorders' video recordings having low audio volume than what I 
hear during my simple video recordings. I am using an over decade old Debian Jessie 
v8/oldstable desktop PC that uses an Intel onboard sound. 
http://zimage.com/~ant/antfarm/about/MyComputerStuff.txt for the secondary PC's 
details. I tried changing so many mixer volumes in ALSA, Pulse Audio, etc. in KDE 
v4. It's confusing! My recorded videos' audioa are always low.

Has anyone had this problem and know how to fix it? Or do I have to use my decade 
old, updated 64-bit W7 HPE SP1 PC to do the video recordings. :(

Thank you for reading and hopefully answering. :)
-- 
Quote of the Week: "As a thinker and planner, the ant is the equal of 
any savage race of men; as a self-educated specialist in several arts 
she is the superior of any savage race of men; and in one or two high 
mental qualities she is above the reach of any man..." --Mark Twain
Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly.
  /\___/\   Ant(Dude) @ http://aqfl.net & http://antfarm.home.dhs.org /
 / /\ /\ \ http://antfarm.ma.cx. Please nuke ANT if replying by e-mail.
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#3377

FromJ G Miller <miller@yoyo.org>
Date2019-02-18 00:46 +0000
Message-ID<q4cv9m$35f$1@dont-email.me>
In reply to#3376
On Sun, 17 Feb 2019 17:24:30 -0600, Ant wrote:

On Sunday, February 17th, 2019, at 17:24:30h -0600, Ant explained:

> I tried changing so many mixer volumes in ALSA, Pulse Audio, etc. in KDE 
> v4. It's confusing! My recorded videos' audioa are always low.

You should only change one thing at a time.

And in order to track down the problem, the following points must be
addressed:

1) Which application are you using to playback videos?  Some applications
   have their own volume control which can sometimes (eg mplayer) be difficult
   to find how to adjust.

2) Are you running pulseaudio?  If so, when you fire up pavucontrol and
   go to the "Playback" tab (the first tab in fact), do you see in addition
   to System Sounds, your application name and a volume control slider?

3) If you fire up alsamixer, does it show pulseaudio as the first (default)
   device with volume control?   The hitting F6, can you select the sound card
   device for your Intel onboard output.  Warning, on changing the alsamixer
   volume control for the real sound card hardware device, some older pulseaudio
   setups had a habit of resetting the level by themselves, so attempting to
   change it manually actually served no purpose.

Old versions of pulseaudio at times had major problems messing with
sound levels and upgrading to a recent version (8.0 at least) would be
a sensible course of action.

The other issue is, are you actually recording the videos with a sensible
audio level for playback?

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#3378

Fromant@zimage.comANT (Ant)
Date2019-02-17 20:35 -0600
Message-ID<u-mdnahXv5ZohPfBnZ2dnUU7-SvNnZ2d@earthlink.com>
In reply to#3377
J G Miller <miller@yoyo.org> wrote:
> On Sun, 17 Feb 2019 17:24:30 -0600, Ant wrote:

> On Sunday, February 17th, 2019, at 17:24:30h -0600, Ant explained:

> > I tried changing so many mixer volumes in ALSA, Pulse Audio, etc. in KDE 
> > v4. It's confusing! My recorded videos' audios are always low.

> You should only change one thing at a time.

> And in order to track down the problem, the following points must be
> addressed:

> 1) Which application are you using to playback videos?  Some applications
>    have their own volume control which can sometimes (eg mplayer) be difficult
>    to find how to adjust.

Many players like VLC, MPC-HC, etc. on multiple computers when I try to play the 
recordings back.


> 2) Are you running pulseaudio?  If so, when you fire up pavucontrol and
>    go to the "Playback" tab (the first tab in fact), do you see in addition
>    to System Sounds, your application name and a volume control slider?

> 3) If you fire up alsamixer, does it show pulseaudio as the first (default)
>    device with volume control?   The hitting F6, can you select the sound card
>    device for your Intel onboard output.  Warning, on changing the alsamixer
>    volume control for the real sound card hardware device, some older pulseaudio
>    setups had a habit of resetting the level by themselves, so attempting to
>    change it manually actually served no purpose.

> Old versions of pulseaudio at times had major problems messing with
> sound levels and upgrading to a recent version (8.0 at least) would be
> a sensible course of action.

Hmm, maybe that's why:
$ dpkg -l |grep pulseaudio
ii  gstreamer0.10-pulseaudio:amd64        0.10.31-3+nmu4+deb8u2                       amd64        GStreamer plugin for PulseAudio
ii  gstreamer1.0-pulseaudio:amd64         1.4.4-2+deb8u3                              amd64        GStreamer plugin for PulseAudio
ii  pulseaudio                            5.0-13                                      amd64        PulseAudio sound server
ii  pulseaudio-esound-compat              5.0-13                                      amd64        PulseAudio ESD compatibility layer
ii  pulseaudio-module-x11                 5.0-13                                      amd64        X11 module for PulseAudio sound server
ii  pulseaudio-utils                      5.0-13                                      amd64        Command line tools for the PulseAudio sound server


> The other issue is, are you actually recording the videos with a sensible
> audio level for playback?

Yes. When I just do my normal playing, it is fine. It's just my recordings' audio 
volume isn't.

Now, the bad news. I lost the audio completely in my recordings. Argh. I need to 
figure how to get it back even if it is low.
-- 
Quote of the Week: "As a thinker and planner, the ant is the equal of 
any savage race of men; as a self-educated specialist in several arts 
she is the superior of any savage race of men; and in one or two high 
mental qualities she is above the reach of any man..." --Mark Twain
Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly.
  /\___/\   Ant(Dude) @ http://aqfl.net & http://antfarm.home.dhs.org /
 / /\ /\ \ http://antfarm.ma.cx. Please nuke ANT if replying by e-mail.
| |o   o| |
   \ _ /
    ( )

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#3379

Fromant@zimage.comANT (Ant)
Date2019-02-17 21:03 -0600
Message-ID<cI-dnTYjKZAPvffBnZ2dnUU7-cmdnZ2d@earthlink.com>
In reply to#3378
Ant <ant@zimage.comant> wrote:
> J G Miller <miller@yoyo.org> wrote:
> > On Sun, 17 Feb 2019 17:24:30 -0600, Ant wrote:

> > On Sunday, February 17th, 2019, at 17:24:30h -0600, Ant explained:

> > > I tried changing so many mixer volumes in ALSA, Pulse Audio, etc. in KDE 
> > > v4. It's confusing! My recorded videos' audios are always low.

> > You should only change one thing at a time.

> > And in order to track down the problem, the following points must be
> > addressed:

> > 1) Which application are you using to playback videos?  Some applications
> >    have their own volume control which can sometimes (eg mplayer) be difficult
> >    to find how to adjust.

> Many players like VLC, MPC-HC, etc. on multiple computers when I try to play the 
> recordings back.


> > 2) Are you running pulseaudio?  If so, when you fire up pavucontrol and
> >    go to the "Playback" tab (the first tab in fact), do you see in addition
> >    to System Sounds, your application name and a volume control slider?

> > 3) If you fire up alsamixer, does it show pulseaudio as the first (default)
> >    device with volume control?   The hitting F6, can you select the sound card
> >    device for your Intel onboard output.  Warning, on changing the alsamixer
> >    volume control for the real sound card hardware device, some older pulseaudio
> >    setups had a habit of resetting the level by themselves, so attempting to
> >    change it manually actually served no purpose.

> > Old versions of pulseaudio at times had major problems messing with
> > sound levels and upgrading to a recent version (8.0 at least) would be
> > a sensible course of action.

> Hmm, maybe that's why:
> $ dpkg -l |grep pulseaudio
> ii  gstreamer0.10-pulseaudio:amd64        0.10.31-3+nmu4+deb8u2                       amd64        GStreamer plugin for PulseAudio
> ii  gstreamer1.0-pulseaudio:amd64         1.4.4-2+deb8u3                              amd64        GStreamer plugin for PulseAudio
> ii  pulseaudio                            5.0-13                                      amd64        PulseAudio sound server
> ii  pulseaudio-esound-compat              5.0-13                                      amd64        PulseAudio ESD compatibility layer
> ii  pulseaudio-module-x11                 5.0-13                                      amd64        X11 module for PulseAudio sound server
> ii  pulseaudio-utils                      5.0-13                                      amd64        Command line tools for the PulseAudio sound server


> > The other issue is, are you actually recording the videos with a sensible
> > audio level for playback?

> Yes. When I just do my normal playing, it is fine. It's just my recordings' audio 
> volume isn't.

> Now, the bad news. I lost the audio completely in my recordings. Argh. I need to 
> figure how to get it back even if it is low.

I forgot to share my http://screenshot.cz/F5/F55QQ/audiomixers.gif 
screen capture if it helps.
-- 
Quote of the Week: "As a thinker and planner, the ant is the equal of 
any savage race of men; as a self-educated specialist in several arts 
she is the superior of any savage race of men; and in one or two high 
mental qualities she is above the reach of any man..." --Mark Twain
Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly.
  /\___/\   Ant(Dude) @ http://aqfl.net & http://antfarm.home.dhs.org /
 / /\ /\ \ http://antfarm.ma.cx. Please nuke ANT if replying by e-mail.
| |o   o| |
   \ _ /
    ( )

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