Adobe Premiere Pro CS3 and Adobe Premiere Elements 4 do not natively support the AVCHD format.

This document explains available third-party solutions that will add support for the AVCHD format to Premiere pro CS3 and Premiere Elements 4

Adobe is aware that this is not an exhaustive list of solutions and that other solutions are and will become available and may be better suited to individual workflows.
Community content is available under CC-BY-SA unless otherwise noted.