[UPDATE] OBS Studio v23.0.2March 9, 2019
Open Broadcaster Software (OBS) Studio is a very powerful and flexible screen recording and screencasting tool. The program includes real time recording, broadcasting, and sound mixing and designs. Even the”scene” system allows building custom input settings with multiple audio and video sources (multiple radios, webcam, applications, screens etc.). Accessible filters allow for automatic, dwell filtering for example crop, color correction, sharpen, chroma key, audio gain and much more.
Instead, PortableApps’ OBS Portable is also accessible.