I've been looking for a way to make use of multiple instances of the same camera in OBS but the Linux camera drivers look it to a single process luckily though virtual camera devices with v4l2loopback don't have this problem.

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==========Resources==========
V4l2Loopback GitHub: https://github.com/umlaeute/v4l2loopback

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==========Time Stamps==========
0:00 Introduction
1:31 Virtual Camera
1:58 V4L2 Loopback
3:23 Finding Camera Devices
4:39 Enabling Virtual Camera
6:14 Loopback Camera
8:56 Enabling Camera
13:41 Other Use Cases

==========Credits==========
🎨 Channel Art:
All my art has was created by Supercozman
https://twitter.com/Supercozman
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🎵 Ending music
Music from https://filmmusic.io
"Basic Implosion" by Kevin MacLeod (https://incompetech.com)
License: CC BY (http://creativecommons.org/licenses/by/4.0/)

DISCLOSURE: Wherever possible I use referral links, which means if you click one of the links in this video or description and make a purchase I may receive a small commission or other compensation.
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https://www.youtube.com/watch?v=pKLVNcP0wsk