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.

How to Open MT2S Files. Unlike many other camcorders that save video clips in industry standard AVI, MP4 or MPEG format, newer Panasonic and Sony video camera record and store movie files in the ...

How to Open MP4 Files in VirtualDub. VirtualDub is a free digital video application that you can use to make simple edits to footage. The program accepts digital video in the AVI, DIVX, MPG, MPV ...

Microsoft is making it easier to change your default file associations by adding a new search feature that lets you quickly find the extension you wish to modify.

Q: My sister sent to me four MP4 video files that she had converted from old family films. I was able to view them and enjoy them on my computer without issue, but when I tried to forward them to ...