Play your AVI and MKV videos from SD card with this app. Some other popular video and audio forms are supported here, too,

Usage Introduction
The main interface of this app is a list of folders from SD card. You can click to open them or long press them to edit them, operations here contain copy, cut, rename and delete.
When you have copy or cut something, press the menu button and you will see the function of paste.
In other words, you can manage the files from SD card in this app, so do video and audio documents.
You also can use the buttons in the top right side, too. Some functions like search and create new folder are not work very well in this unstable app.



UNINSTALL
This app can be activated in the setting part, then it cannot be uninstalled in the status of activate. Deactivate it from the setting of the cell phone setting.
Press the Menu button and select to open setting, then find the section of location and security, deactivate this app in device administration part. Till now, you can uninstall this app whenever you want to.

MKV is Matroska Multimedia Container, an open standard free container format, a file format which can hold an unlimited number of video, audio, picture, or subtitle tracks in one file.