A free app for Android, by Connect Apps Lab.

HD Video Player – Media Player is a powerful media player for Android, supporting MKV, MP4, M4V, AVI, MOV, 3GP, FLV, WMV, RMVB, TS, etc. The most interesting thing is that it can play all these videos in high definition! All formats are supported. This application also supports Android phones and tablets.

HD Video Player – Media Player comes with a simple, clean, and user-friendly interface, which makes the application much easier to use and navigate. 

You can download this amazing application on your Android device completely free.