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VLC stream webcam video with audio - Unix & Linux Stack ...
https://unix.stackexchange.com/questions/425955/vlc-stream-webcam-video-with-audio
Or even better, tell vlc to use Pulseaudio in the first place. I couldn't quickly find proper documentation on --input-slave for vlc, but the google results suggest --input-slave=pulse does work, and very likely there's some --input-slave=pulse://pulseaudio_source_name syntax that actually allows you to specify the correct card (called "sound source" in Pulseaudio).
grab video and audio from a browser with vlc - NoWarTools
https://nowardev.wordpress.com/2014/05/25/grab-desktop-with-audio-from-jack-with-vlc/
cd /tmp ; cvlc --jack-input-auto-connect screen:// --screen-fps=25 --input-slave pulse://jack_in --sout "#transcode{venc=x264,quality:100,scale=1,fps=30,acodec=mp3,ab=128,channels=2, samplerate=44100}:duplicate{dst=std{access=file,mux=mp4,dst=nowardev.mp4}}}"
PulseAudio - VideoLAN Wiki
https://wiki.videolan.org/PulseAudio/
PulseAudio is a sound daemon/sound server created by freedesktop.org for GNU/Linux(Windows ports exist but are heavily out-of-date). It aims to be an extensible, network-capable sound server that manages audio in a fast and efficient way. VLC …
streaming video - Unable to configure pulseaudio/alsa to ...
https://raspberrypi.stackexchange.com/questions/109417/unable-to-configure-pulseaudio-alsa-to-work-with-cvlc
cvlc \ v4l2:///dev/video0:chroma=h264:width=1280:height=720:input-slave=alsa://hw:1,0 \ --sout '#transcode {acodec=mpga,ab=128,channels=2,samplerate=44100,threads=4,audio-sync=1}:rtp {mux=ts,mime=video/ts,sdp=rtsp://:8080/stream.sdp}'.
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.
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