Assume that a movie is two hours long, that the frame rate is 30 frames per second, and that the resolution per frame is 1080i (1920×1080 pixels per frame), and that each pixel is represented by three colors (Red, Green, Blue) where each color is described by one byte. (A byte is equal to 8 bits).
a. How much storage is needed for the movie (ignoring audio) if there is no data compression?
b. Assuming that the video can be stored on one DVD (4.7 Gigabytes), by what factor must the movie be compressed (ignore space needed for audio files)?