Can't play MP4 on Windows? This post will show you how you can play & view MP4 video files using freeware like VLC Media Player & 5KPlayer.

Check out our guide on how to convert MP4 files to AVI, whether you use Windows or Mac OS X.

When you export a Windows Live Movie to disk its default settings go out to an MP4 file. Windows Media Player on his computer does not play MP4 files.

If you receive Unsupported video type or invalid file path message in Internet Explorer when using Twitch, MyIPTV, Xbox or unsupported HTML video/audio format or player, see this fix.