If the file does not open, try renaming the extension to .avi or .mov , or use a repair tool.
Install the K-Lite Codec Pack [codecguide.com] if your computer's media player lacks the necessary components to render the video. To make this guide more useful, could you tell me: Dodo (442) mp4
What is the of the file (e.g., a game tutorial, a movie, or a video)? If the file does not open, try renaming the extension to