I have home video of a recent trip to Spain. Several clips have lens flare which I can live with but I would prefer cleaning this up. I have about 30 minutes of video clips MVI_number.MOV that have a dirt smudge, bug or something on the lens the size of about 5% or less of the frame. What is the best program(s) to remove this smudge and the price(s)? I use Corel VideoStudio Pro X7, Windows 8.1 64 bit.