Riv Screen Recorder is a simple and easy to use screen recorder for devices running Android 5.0+
It uses official APIs added in Android Lollipop+ so it requires no rooting.
Videos are stored in an easy to find folder, so you can use your favorite applications to view, edit, and share them.
• Use cameras as picture-in-picture
• Store recordings on SD card
• Record at full screen resolution
• Set resolution, orientation, and bitrate
• Recording start delay
• Stop recording on screen off
• Record audio
"... aptly named..." - Android Police :)