This is a special effects unit, and the functions on the lower right are for different kinds of wipes between two sources. Does not do resizing.
By the way, I don't understand why you are still having trouble. What exactly is the source of video you are using? A cable box? satellite box? Off-air digital to analog converter box? Any of these should have a zoom/aspect/crop setting that enlarges the image and crops off the left and right edges of a 16x9 program to give you full-screen 4x3 NTSC out.
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