Watch a video
Open Videos > tap a video.
The library shows every video in your device's storage, and on memory cards and USB sticks. Videos you stopped part way are at the top, under Continue Watching.
To find a video, type its name in Search. To sort, open the Menu and tap Sort by Name, Sort by Date or Sort by Size.
Press and hold a video for Play from the Start or Remove from Continue Watching.
To add videos from a computer, see Copy files between your device and your computer.
Checked against the LuneOS code and installed apps. Nobody has tried these steps by hand yet, so tell us if something differs.