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SimpleScreenRecorder, record audio in Fossapup64 9.5

Posted: Thu Jan 19, 2023 8:44 pm
by wizard

This how-to will not apply if you already have an audio server installed, such as Jack or Pulse.

Although only tested on Fossapup64 9.5, it may work on other Pups.

The two sources that led to these solutions came from:
@JakeSFR
https://oldforum.puppylinux.com/viewtopic.php?t=95431
@xx_T3n0ch_X
https://forum.puppylinux.com/viewtopic. ... 961#p78961

Test setup:
Fossapup64 9.5
Hardware=Intel desktop, Intel audio chip ALC888, driver=snd-hda-intel.ko

Two .pet files are included since you may find one works better than the other.

alsa_audio_capture.pet
(896 Bytes) Downloaded 96 times
alsa_audio_capture2.pet
(1.36 KiB) Downloaded 98 times

Either of the two .pet files will install:
-/root/startup/alsa-snd-aloop.sh (loads the snd-aloop kernel module on startup)
-/etc/asound.conf

The asound.conf file:
-sets up a loopback device used for recording the audio
-sets up a alsa pre-amp to boost playback. This is not required for recording and can be removed by
editing asound.conf (delete lines 2-20). Note: rebooting several times may be required before the pre-amp appears in Retrovol

pre-amp.jpg
pre-amp.jpg (12.63 KiB) Viewed 1341 times

Usage (overview):
-install .pet file
-reboot
-Open SimpleScreenRecorder
-Set Audio Input Source=[hw:1,1] Loopback: Loopback PCM
-Start recording
-Start video to be captured

For my test I set SimpleScreenRecorder as:
-video container - MP4
-video codec = H.264
-audio codec = MP3
-Bit rate = 128

You may have to do some experimenting with different hardware, but this worked for me.

wizard


Re: SimpleScreenRecorder, record audio in Fossapup64 9.5

Posted: Fri Jan 20, 2023 2:25 am
by mikewalsh

@wizard :-

Cheers for this, Wiz. Very similar kind of operation to what we ended up with during the course of this thread:-

https://forum.puppylinux.com/viewtopic.php?t=6083

.....again, making use of the kernel 'snd_aloop' module. Good for me, certainly, 'cos the audio chip in this HP Pavilion desktop of mine is an absolute PITA when it comes to trying to record anything other than direct, external input via a 'live' microphone..!

I'll give this a try myself over the coming weekend. Thanks.

Mike. ;)