hi guy,

1,. AVI was originally called Video for Windows® (VFW) and QuickTime supports the VFW format.

2,many DivX-encoded files carry the .avi extension. QuickTime does not include native DivX support

using the following way's

1.VLC media player for osx (video lan client) freeware tool from www.videolan.org
2. The best way is to convert to quicktime.mov using freeware tools from www.3ivx.com

have a nice day