3ivx supports MPEG-4 MP4, M4A, 3GP and MOV files. Supports MPEG-4 Video and MPEG-4 AAC Audio.
The 3ivx codec includes the 3ivx D4 Video Decoder, the 3ivx D4 Media Splitter and the 3ivx D4 Audio Decoder to play back DivX 3, MPEG-4 Advanced Simple Profile video, as well as MPEG-4 Multi Channel AAC Audio (up to 5.1 channels), including HE AAC.
The 3ivx decoder plays back most MPEG-4 files (including MP4, M4A, 3GP and MOV files) with MPEG-4 AAC Audio and MPEG-4 Video (such as DivX 3, 4 and 5, Apple MPEG-4, Philips MPEG-4 and XviD) using compatible players such as ALShow. The Audio Decoder can play back MPEG-4 Multi-Channel High Efficiency AAC including audio encoded by Nero AAC and iTunes.
After installing 3ivx, restart ALShow and you can now play movies with 3ivx encoding like MP4, MPA, 3GP, and MOV video files.
http://www.3ivx.com/download/windows.html
For ALShow information and support, please visit ALTools.