A free program for Android, by GCS Software Lab.

MX Player Go is a free, easy-to-use media player for Android. It supports all popular video formats, including HD, and has the best performance. You can download it for free.

MX Player Go includes smoothly touching up and down volume controls to pause or rewind it as you like while watching videos with friends and family. MX Player Go also provides the best HD qualities for viewing your media library. MX Player Go has the best touch controls for adjusting the brightness up and down.