I have been using this video player from last near about five years. Its very eay to use. It supports almost every video formats like. Mkv. Avi. Mp4. Mpeg. Etc. Mx player even play 1080p videos very smoothly. It is lag free. It is free available on play store. Its features are awesome like from left side we can adjust brightness by merely scrolling up and down. From right side we can adjust volume. And scrolling left or right horizontally we can go forward or backwards in videos. There are also other so many options like we can adjust subtitles. Add and even search. Its highly recommended.