Screen Recorder is a simple desktop recorder for Linux systems. Built using Python, GTK+ 3 and ffmpeg. It supports recording audio and video on almost all Linux interfaces. Also, Green Recorder is the first desktop program to support Wayland display server on GNOME session.
Formats are currently supported: mkv, avi, mp4, wmv, gif and nut (And only WebM for Wayland's GNOME session). You can stop the recording process easily by right-clicking the icon and choosing "Stop Record". Or middle-clicking the recording icon in the notifications area
It uses the D-Bus API to connect to the built-in screencasting tool in GNOME Shell. It uses this to record video. To record audio, it launches an instance of ffmpeg in the background. After the recording is finished, it merges the two files into the WebM file.