I'm working in widescreen (16:9) PAL. I'd like to know what I should do to optimise stills that I import into a movie. Should I crop the images to exactly 16:9? Whatver ratio I import them as, is there an optimum pixel DPI?

Also, I stitched a number of images together, and used the pan function. When I created the DVD, it worked, but the effect was jerky and flickery. Can anyone suggest why?

thanks
Nick