if i want to make a movie with images which have defferance demension.so do i have to resize them to spacific size before i create a movie.because some images are too large.
You don't necessarily have to resize the images before bringing them into the program. They will be automatically resized to your project/movie settings (virtually, without affecting the source file) after import and will be displayed in that size in your preview during the editing and in your final output. If you wanted, you could resize the images to e.g. TV/DVD resolution before bring them in, just to save resources and make the editing smoother. However, if you're not experiencing any problems, there's no need to do so.