AC3 is an audio format designed by Dolby Digital to offer surround sound listening. This format is available on most Blu-ray and DVD media files and is played using a Dolby Digital DVD Player. Interestingly, AC3 can be output in up to six speakers of a home stereo system. On a computer, AC3 can be opened on VLC Media Player, Apple QuickTime Player, and Windows Media Player.
VLC Media Player Apple QuickTime Player Windows Media Player
DivX is a video codec brand developed by DivX, LLC. This video codec is mainly compatible with Windows programs, although it can also be embedded on game consoles, alar clocks, car stereo, and more. Today, there are three primary DivX codecs, including MPEG-4 Part 2, HEVC Ultra HD, and H.264/MPEG-4 AVC DivX Plus High Definition video codec.
DVD/Blu-ray Players Alarm Clocks Car Stereo X-Box 360