Microsoft Windows Media Player
9 or higher and enjoy MPEG4 videos now!
The G.726 is an audio standard used in VoIP, camcorders and digital stills cameras.
When Sharp G.726 is missing, you'll get this error message: "The audio codec identified by the format tag 45 is required to play this file".
Install Sharp G.726 Audio Codec in order to fix the Audio Codec Tag 45
This codec has not been updated since 2005 and is no longer signed by Microsoft, so its functionality may be limited on other operating systems than Windows XP.
This piece of software, not exceeding 1MB, is exactly what you need if you want to enjoy the MPEG4 format on your computer and view properly contents from VoIP and digital cameras.