AVI file extension means “Audio Video Interleave” file. The AVI file enhances the video daa quality in a computer. It also compresses the video files so that the file can be played on the Windows Media Player, which can play the compressed video files having the AVI format. However, this requires that the correct codecs must be there in the computer. So, what does one do if one is unable to open the avi files?
If you are not able to open avi files in Windows, it may be because registry errors. It may also be due to not having the correct application in the computer. You need to scan your computer for registry errors – which can be done for free.
Lot more info on how to open the avi files are given in the file extension library, which has over 1000 descriptions so that at any time one hits an obstacles, one can get a solution for the same.

