RX Player

Powerful Media Player which plays all formats of videos and audios

Gesture control.)
control volume, brightness and seek by directly scrolling on screen
lock.)
lock the screen by tapping on lock icon
Gallery)
By tapping Gallery in toolbar browse all videos in your storage directly
Play in full screen)
By default Rx player plays videos in full screen

Permissions
READ_EXTERNAL_STORAGE is required in order to browse gallery