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content/blog/v4l2-webcam.md

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+---
+title: "Loopback Webcam Device with V4l2"
+date: 2020-05-25T23:49:08-04:00
+draft: false
+tags: ["Audio-Video"]
+medium_enabled: true
+aliases:
+  - /blog/fakewebcam
+---
+
+In Linux you can create a fake webcam by making use of the `v4l2loopback` kernel module.
+
+To install,
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+If you already had an existing module, remove it so we can customize it.
+
+```bash
+sudo modprobe -r v4l2loopback
+```
+
+Then create the file `/etc/modprobe.d/fakecam.conf` and add the following line
+
+```
+options v4l2loopback devices=1 video_nr=20 card_label=fakecam exclusive_caps=1
+```
+
+The value of `video_nr` must be larger than the amount of cameras in your system. I wouldn't have more than 10 webcams plugged into my system, so I set it to 20.
+
+Then load back up the kernel module
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+Now when you open up Chrome, Skype, etc, you should see a new device labeled "fakecam".