Files stored in the MPG format are video files embedded with MPEG video data compression specifications and data encoding algorithms, and these MPG video files are appended with the .mpg extension. Specifically, MPEG-1 and MPEG-2 formatting standards are usually incorporated into MPG files, which are digital video data compression specifications and algorithms developed by the Moving Picture Experts Group. These MPG files are normally distributed on the Internet as video downloads, streamed videos and digital video content materials that are embedded unto Web pages. Windows Media Player is integrated with compatibility support and playback functionality for these MPG files, which means this media player can be used to open and view the video content of files stored in the .mpg format. Apple QuickTime Player is a cross platform digital multimedia player that is also embedded with compatibility support and playback functionality for these MPG files, which means Windows and Mac users can deploy this software to open and view the video content stored in files appended with the .mpg extension.