Avi Previewer is a handy tool that help you to preview avi files which are not completely downloaded or fix damaged avi files which can not be played or dragged. When palyers such as Mediaplayer hint that the multimedia file can`t be played or it has been damaged, you can try to use the Avi Previewer to fix the file. The fixed files can be opened by multimedia edit software to be further processed. The rate of success in the fix has reached 70% to 80%.