Problem viewing videos on cs5

Hi guys pretty much videos look unreal in windows movie viewer, but in cs5 really choppy and bad! files are avchd .mts 1920 x 1080 29 fps

 

 

 

I was  wondering if you guys knew how to make the videos as clear so i can edit than upload, or is it just the mercury video viewer?

 

or should i convert the file?

via Adobe Community : Popular Discussions – Adobe Premiere Forums http://forums.adobe.com/thread/1089101