I've got a few movies that were originally 4:3, but some idiot converted them to 16:9. Talking 'bout some classic Ed Sullivan clips. Result: deformed image and black bars on top&bottom. I want to convert them back to 4:3, but the "Pan/Crop" tool just doesn't want to loose the black bars and stretch the image to full screen 4:3. Rendering it with the "stretch video to fill output frame size" also doesn't help.
Does anyone know how to do it exactly?