Needed change 1#
You should be able to capture and record default Monitor device.
Alternatively you can use Web Audio API to create an OsciallatorNode with frequency set to 0.
Needed change 2#
Chromium provides such a means using flags, e.g.,
chromium-browser --autoplay-policy=no-user-gesture-required --use-fake-device-for-media-stream --use-fake-ui-for-media-stream --use-file-for-fake-audio-capture=$HOME/localscripts/output.wav --user-data-dir=$HOME/test
On Mon, May 10, 2021 at 6:26 AM <andreas.unterhuber@xxxxxx> wrote:
Dear pulseaudio community,
I've a setup to run a screen grabber (ffmpeg records content of a website, loaded in chromium by selenium) within a docker container. Audio is recorded from ffmpeg by pulseaudio on a Ubuntu 18 system.
#################
My setup:
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... start Xvfb, chrome+selenium ...
pulseaudio -D --exit-idle-time=-1
pacmd load-module module-virtual-sink sink_name=v1
pacmd set-default-sink v1
pacmd set-default-source v1.monitor
... and then ffmpeg -ar 44100 -f pulse -i default [...] out.mp4 ...
Works perfectly. But I want a little more. I'm pretty sure that someone can help me!
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Needed change 1#
#################
I need an audio source that has always audio (audio "silence"). The browser does not always have audio-websites to playback. So I had in mind to create a source with continuous silence, mixed with browser audio (whenever the browser has audio signals to play).
How does the command/setup looks like? I played around but was unable to realize...
#################
Needed change 2#
#################
Instead of just continuous silence I want to playback an audio file that runs in a loop forever, mixed with the browser audio.
How does the command/setup looks like?
I'm very, very thankful for any help!
Best, Andreas
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