4K Video Player HD All Format is a free multimedia application developed by Classy Studio for Android. The app is designed to play all formats of videos, including 4K ultra HD videos with high definition. It also supports audio playback, making it an all-in-one media player.

The app has an easy-to-use interface and comes with a host of features such as fast forward, fast backward, and adding videos and audios in a playlist. It also has a lock screen feature to prevent misuse while a video is playing and a private video file hiding feature to protect your privacy. The app supports almost all video formats, including MKV, 3GP, M4V, MOV, TS, AVI, MP4, WMV, RMVB, MPG, FLV, and more, depending on your smartphone.

The app also includes an equalizer, bass booster, stereo surround sound effect, and bands equalizer and presets, providing an immersive audio experience. With the device default decoder for decoding, it plays all types of videos smoothly and provides better video quality. Overall, 4K Video Player HD All Format is an excellent media player that provides a personalized experience for watching movies and amazing video songs.