DivX MPEG-4 Audio Codec
Playing movies or any video file on a computer would not be possible without the help of the proper codecs that are able to decode streams. Sometimes, depending on the encoders used for putting together the media file, some specific filters are required or only particular versions of some codecs.
This seems to be the case of videos with an audio stream in WMA (Windows Media Audio) format, more precisely movies encoded with DivX 3. If you plan on watching such a video and your system uses the DivX decoder version 4 or higher, its most likely that the sound will fail.
This is because the MP3 codecs cannot recognize the original format unless the DivX 3.11 Alpha codec is also present on the PC. To solve the issue, all you have to do is get and install DivX MPEG-4 Audio Codec, a lightweight package that contains the necessary files for adding the filter to your environment.
There are no configurations that need to be done in order to have the codec function properly, simply run the 'Register.exe' executable to have the DivX codec added automatically. It is important to note that the application has to be run with administrative rights, otherwise the installation will fail.
DivX MPEG-4 Audio Codec brings just the necessary audio decompressor, without the rest of the outdated DivX 3.11 components which would replace the more recent ones that should not be changed.
A big plus for this particular codec is that upon installation it will create an entry in the 'Programs and Features' or 'Add/Remove Programs' control panel section to allow you to safely uninstall it if needed.
All in all, the package serves is purpose flawlessly and can be of great aid for anyone who needs to view a video and the sound is not available because one simple decompressor is missing.