The aspect ratio of your screen makes a difference in your outdoor movie experience. Check out the following formats and choose the one that's right for your backyard cinema. 1:1 – Good for slideshows and commercial presentations. Not suitable for movies. 4:3 – (NTSC Format) This aspect ratio is suitable for gaming and classroom training, not for movies. 16:9 – (HDTV Format) This video format is suitable for gaming and home theater. 2.35:1 – This format provides you true cinemascope format suitable for Blu-ray movies.