First, you need to ask in http://forums.adobe.com/community/premiere/content
Second, when you go there, you need to provide more information
AVI is a wrapper, what is inside YOUR wrapper?
Codec & Format information, with 2 links inside for you to read http://forums.adobe.com/thread/1270588
Report back with the codec details of your file, use the programs below... A screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30 for screen shot instructions
Free programs to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
This forum is about the Cloud as a delivery process, not about using individual programs
If you start at the Forums Index https://forums.adobe.com/welcome
You will be able to select a forum for the specific Adobe product(s) you use
Click the "down arrow" symbol on the right (where it says All communities) to open the drop down list and scroll
Can you speak french because my english is very bad.
Have a nice day