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.

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

I was recently sent some video clips in .mp4 file format and could not open them with Windows Media Player, which displayed a message saying the file was incomplete or corrupt. I tried various ...

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