Is there a way to specify the aspect ratio of the display window. Let say that I want to make sure that it is 4 by 3 or 16 by 9. I want to make chimera movies that are easy to merge with still images using some video editing programs (e.g. Windows MovieMaker) and these programs assume some standard video formats (with a given aspect ratio). The results when using movie clips and images created with arbitrary and different aspect ratios is not very good (jumpy transitions) so I would like to create all images and movie clips with the same (standard) aspect ratio. Thanks Hernando -- ----------------------------------- Hernando Sosa Dept. of Physiology and Biophysics Albert Einstein College of Medicine 1300 Morris Park Av. Bronx NY 10461 phone (718) 430-3456 FAX (718) 430-8819 email hsosa@aecom.yu.edu -----------------------------------