I’d like to create animated images (such as a ball that moves across the screen at various speeds/levels of brightness, etc.). The participant would rate how fast the ball moved after each presentation. Some images would also be accompanied by tones. It was recommended I do this using a movie maker. Can someone recommend inexpensive, easy-to-use movie-making Windows software? This is all new to me and I have no idea where to even start making a movie. Thanks.