Convert AVI to PRPROJ

PRPROJ is a proprietary file format, which means your only option for converting Audio Video Interleave Files directly to Adobe Premiere Projects (.avi to .prproj conversion) is using the original software. This is not a conversion in the proper sense.

Use Adobe Premiere Pro, since it is the only software that will allow you to import AVI videos to a new/existing Adobe Premiere Pro project, and then save it in PRPROJ format.