HD Video Player - mp4 player is the perfect app for watching videos on the go. It supports most video file types and HD and 4k videos for a better viewing experience. It offers auto-sync and video playback control. 

All videos stored in your phone will be automatically detected by the app, making it easier to find newly download or transferred videos. You can use your finger to adjust the brightness and volume, which is convenient.  HD Video Player - mp4 player also functions as a music player. The user interface is clean and functional for easy usage. HD Video Player - mp4 player requires Android 5.0 and newer to use.