The app shows promise
However, the documentation states that it can play any file format. It can’t play MKV file, for example and also any video MP4 3-D or simple video it comes in a very large box and you can’t change it to landscape. It stays very much in a portrait box
Response from developer
Sorry for the inconvenience. MVPlayer.app supports HEVC (2D videos) and MV-HEVC (3D videos) formats for now. From MP4 and MOV containers.