I have used this for awhile now but this problem recently came up out of nowhere. When I open a video in adobe premiere it works fine for a second but then sound cuts and the video speeds up like 400x the normal rate. If i open in windows media it works for a second then says cannot read file. Help?

I just bought this program and it works excellent! except when I try to edit in Adobe premiere CS5.5 my adobe premiere crashes when importing the video file. I have it recording in AVI and 30 fps. Is there any way around this?