Droid Dashcam is a great driving video recorder (dashboard camera, BlackBox) app for car/vehicle drivers which can continuously record videos in loop mode, add subtitles with needed information directly on those videos (read below) and record in background, autostart recording and much more. Background Video Recording - you can continue recording in background and use other apps which doesn't use camera. You can also use notification panel to start/stop recording while this app is running in background. Easy to use, simple UI, the configuration of the buttons displayed on the screen, etc.