One of the most common video format, the .MP4 files refer to the generic video files based on MPEG-4 files. MPEG-4 files are very common and widely used format on the internet today. This standard was invented by the Moving picture experts group.

The file structure of an MP4 file uses two layers of compression. Both the audio and video are compressed separately with different algorithms. The video on an MPEG-4 file is compressed with MPEG-4 technique of encoding while the AAC technique is used to encode the audio track of an MP4 file. MP4 format enjoys wide popularity on the internet today.