Compared to MPEG-1 and MPEG-2, MPEG-4 supports not only natural sounds (such as voice and music) but also synthetic sounds (such as MIDI).

MPEG-4 includes the vast majority of MPEG-1 and MPEG-2 features and the strengths of other formats, and adds and extends support for Virtual Reality Modeling Language (VRML), object-oriented composite files (including Sound effects, video and VRML objects), as well as digital rights management (DRM) and other interactive features. MP4 is a set of compression coding standards for audio and video information. Part 2: How to Convert MP4 Video to Any Format on a Mac What IS MP4? Part 1: How to Convert Video to MP4 on a Mac