How to record WebRTC calls on EC2? about puppeteer-stream HOT 7 CLOSED

What follows is the sequence that we followed.

Stack Overflow kernel link: https://stackoverflow.com/questions/49538514/sound-driver-snd-aloop-kernel-module-setup-issue-with-aws-ec2-ubuntu-16-04-ins

Add generic kernel

sudo apt-get update
sudo apt-get -y install linux-image-extra-virtual

Change default kernel

sudo vim /etc/default/grub
sudo update-grub
sudo reboot now

List available kernels

grep -A200 submenu /boot/grub/grub.cfg |grep menuentry

Check selected kernel

uname -srm

Download snd-aloop module

sudo apt install linux-extra-utils

Load snd-aloop

sudo modprobe snd-aloop
modprobe snd-aloop pcm_substreams=1

Check whether loopback devices are setup

aplay -l

Set up .asoundrc in /home/
See also https://www.programmersought.com/article/91613472462/.

pcm.!default { type plug slave.pcm "hw:Loopback,0,0" }

from puppeteer-stream.

I was able to solve this by creating an ALSA loopback device.

@lakshaytalkstocomputer can you share your solution? A proof of concept repository would be really helpful! Thanks!

from puppeteer-stream.

not a problem with puppeteer-stream but rather with the chrome extension api
https://bugs.chromium.org/

from puppeteer-stream.

A mention to particular bug or issue number would be helpful, Thanks!

from puppeteer-stream.

I’m not sure if there’s already one
I’ve only found this post https://stackoverflow.com/questions/51411243/chromes-tabcapture-api-not-recording-all-audio-on-tab but there isn’t a solution.
So I would suggest you to open a new issue on the chromium bug tracker.

from puppeteer-stream.

I was able to solve this by creating an ALSA loopback device.

from puppeteer-stream.

We ( me and @preetmishra )really did not do anything out of ordinary. We ran the script which had ALSA loopback device setup. and it automatically worked. One thing to note is that in ec2 we needed to change the kernel to generic one. AWS one doesnt work because we cannot install custom kernel module (snd-aloop) to it.
Please let me know if this information is any worth it, if you still need a repo i can do that. Also i would like to mention that audio in youtube videos were being recorded on ec2 but audio in webrtc calls were not and for that we dneeded to setup ALSA loopback.

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