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Record a program's output with PulseAudio - Ask Ubuntu
https://askubuntu.com/questions/60837/record-a-programs-output-with-pulseaudio
I would like to record an output of a program with PulseAudio using command line/bash script. It is important not to record all output, but only the output from one specific program. I thought I would have to create a new null-sink and than move the program's output to this new sink. Than tell parec to use this specific monitor to record.
PulseAudio: Audio Streams - freedesktop.org
https://freedesktop.org/software/pulseaudio/doxygen/streams.html
PulseAudio allows applications to fully synchronize multiple playback streams that are connected to the same output device. That means the streams will always be played back sample-by-sample synchronously. If stream operations like pa_stream_cork () are issued on one of the synchronized streams, they are simultaneously issued on the others.
alsa - Record to a pulseaudio stream, and manage …
https://stackoverflow.com/questions/53884658/record-to-a-pulseaudio-stream-and-manage-switching-between-streams
Also, I would like to achieve this in pulseaudio, since bluetooth audio and other stuff are managed using pulseaudio (module-bluez5-device). I can get record and play radio input as follows successfully: arecord -Dplug:hw:cs42888audio -f S16_LE -r 48000 test.wav aplay -Dplug:hw:cs42888audio -f S16_LE test.wav.
Record system output sound in Linux with pacat (Pulseaudio ...
https://www.funwithelectronics.com/?id=95
Record system output sound in Linux with pacat (Pulseaudio) When pulseaudio is used as the sound server of the system, there is a simple way to record the output sound to file on the command line using the pacat-command. This short article describes how to do it. In order to find the correct device you should run this command:
PulseAudio/Examples - ArchWiki - Arch Linux
https://wiki.archlinux.org/title/PulseAudio/Examples
Restart PulseAudio, run pavucontrol and select the "Output Devices" tab. Three settings should be displayed: Internal Audio Digital Stereo (HDMI) Internal Audio Simultaneous output to Internal Audio Digital Stereo (HDMI), Internal Audio Now start a program that will use PulseAudio such as MPlayer, VLC, mpd, etc. and switch to the "Playback" tab.
PulseAudio under the hood - Victor Gaydov
https://gavv.github.io/articles/pulseaudio-under-the-hood/
PulseAudio manages all input and output streams of all desktop applications, providing them such features as clocking, buffering, and rewinding. Time management PulseAudio implements a per-device timer-based scheduler that provides clocking in the sound card domain, maintains optimal latency, and reduces the probability of playback glitches.
Tip Top Tips: Recording Mixed Audio Streams Using PulseAudio
http://pclosmag.com/html/Issues/201610/page08.html
If necessary, ensure it uses Pulse Audio and 'default' source. It too will appear on the Recording tab when a recording is started. Set it to record from "Monitor of Null Output." That is the mixed sound stream. The three streams are now set up. Un-pause the recording application. It starts to record. Play the song with your player application.
pulseaudio - Recording microphone and listening from ...
https://unix.stackexchange.com/questions/607877/recording-microphone-and-listening-from-ethernet
stream_port is also an arbitrary port of your choice, like 1234. Then, on "Bob", to receive the stream of live audio (and play it to the default audio output device), issue this command: vlc -vv rtp://@<stream_address>:<stream_port>. Note that cvlc just launches VLC without the GUI, synonymous to vlc -I dummy.
pulseaudio - Route application's audio output to multiple ...
https://unix.stackexchange.com/questions/458044/route-applications-audio-output-to-multiple-playback-devices
If you are using Pulseaudio anyway, have a look at Pulseaudio's modules, in particular module-loopback and module-null-sink.In my experience, snd-aloop is a bit of a pain to use, and as Pulseaudio mostly deals with sound stream transport, it's much easier in Pulseaudio. So if the use case is "record output of one app in the background, use loadspeakers in the …
PulseAudio - ArchWiki - Arch Linux
https://wiki.archlinux.org/title/PulseAudio
PulseAudio - ArchWiki PulseAudio PulseAudio is a general purpose sound server intended to run as a middleware between your applications and your hardware devices, either using ALSA or OSS. It also offers easy network streaming across local devices using Avahi if enabled.
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