>choosed the HDV 720p30 when started up the project. The file I used is AVCHD (I also tried a clip shot with an Iphone with the same result)
You are trying to fit square pegs into a round hole... start with a correct setting in a new project and see if that helps
Please NOTE that the PPro CS6 screen may look a bit different (I use CS5)
For CS5 and later, the easy way to insure that your video and your project match
See 2nd post for picture of NEW ITEM process http://forums.adobe.com/thread/872666
-and a FAQ on sequence setting http://forums.adobe.com/message/3804341
Grin... Hunt beat me by a few seconds!