This question type is like the standard essay question type, but instead of writing some text, students have one or more recording widgets where they can record some audio or video. The video can be from a webcam or screen recording, depending on what the question author has set up. Like the standard essay question type, it is not automatically graded.
Install from the Moodle plugins database https://moodle.org/plugins/qtype_recordrtc in the normal way.
Or you can install using git. Type these commands in the root of your Moodle install
git clone https://github.com/moodleou/moodle-qtype_recordrtc.git question/type/recordrtc
echo /question/type/recordrtc/ >> .git/info/exclude
Then run the Moodle update process Site administration > Notifications
On the admin screens, there are a few settings you may wish to change, for example audio and video quality and the maximum recording length.