Basically, these settings control how speed, elevation and GPS coordinates are displayed on the main screen, recorded videos or even photos. Additionally, you can turn the viewfinder on/off and control the transparency on the main screen.
Unfortunately, Android does not allow anything to be overlaid on the video sequence itself. That’s why you can’t see such additional data on video sequences viewed outside Voyager. But, there are solutions for this problem.
Date format – currently this option is only used when you are interacting with the accumulated video/photo files. Each file contains a raw timestamp in the name, which is then presented in a nicer format, so you can interact easier with files.