Maybe you could get some savings from the codec by knowing if the range is full or limited, but probably the more useful thing is to just be able to flag the vi

Maybe you could get some savings from the codec by knowing if the range is full or limited, but probably the more useful thing is to just be able to flag the video correctly so it will play right, or to know that you need to convert it if you want, say, only limited-range output. Also as an aside, "limited" is even more limited than 16-255, it's limited on the top end also: max white is 235, and the color components top out at 240.