There are a lot of file formats out there. Videos alone have several file formats such as AVI, MP4, 3GP, and more. People will often find themselves in a situation where they cannot play a certain video because they don’t have the right codec for it. It’s always better to download a codec pack so that you’ll be able to play every file format, but if you’re only missing the codec for the MPEG-2 file format then the MPEG-2 Video Decoder will do the job. This codec will allow you to play MPEG-2 files on your computer. Make sure that you complete all of your codecs so you won’t have a problem running any video in your machines.