webcams: added

wiki/linux/v4l2.md

@@ -9,7 +9,10 @@ It functions as a driver for webcams and tv tuner cards and other devices.
 The following section is based on a
 [gist by ioquatix](https://gist.github.com/ioquatix/18720c80a7f7eb997c19eef8afd6901e).
 
-To use [v4l2loopback](https://github.com/umlaeute/v4l2loopback) an according
+[v4l2loopback](https://github.com/umlaeute/v4l2loopback) is a utility to create
+a virtual video device.
+One use of it is in [OBS Virtual Camera](/wiki/obs.md#virtual-camera).
+To use v4l2loopback an according
 package needs to be installed.
 Some distributions have a package named `v4l2loopback-dkms` in the package
 manager, making the manual installation process unnecessary.

wiki/linux/webcams.md

@@ -0,0 +1,20 @@
+# Webcams
+
+Webcams are video cameras which are designed to be used with a computer for
+streaming, video calls or similar usages.
+This section lists and explains software for the handling of webcams under a
+Linux operating system.
+
+## Editing Video Stream
+
+The editing of a video stream provided by a webcam can be achieved by using
+[OBS](/wiki/obs.md) together with the
+[OBS Virtual Camera plugin](/wiki/obs.md#virtual-camera).
+
+## Configure the Webcam
+
+A webcam can be configured with [guvcview](https://guvcview.sourceforge.net/).
+This program provides a simple interface for capturing and viewing video from a
+[v4l2](./v4l2.md) device and is thus dependent on v4l2.
+Additionally guvcview provides an interface to configure various webcam settins
+and enable a few effects on top of it.