.MPG4 File Extension
File TypeMPEG-4 Video File
What is an MPG4 file?
Video file that uses MPEG-4 compression, a standard developed by the Moving Picture Experts Group (MPEG); much less common than the .MP4 extension.
The MPEG-4 video format encodes audio tracks with Advanced Audio Coding (AAC), which is the same type of audio compression used in .AAC files. The format also encodes video tracks with MPEG-4 encoding.