Yesterday on a flight the FA broke into the PA to make a long, drawn-out announcement about what was available for purchase from the cart, and how to pay, etc. Very, very detailed. Normally I just tune out this garbage, but I was trying to watch the (awful) movie on the (tiny and blurry) screen. They let the movie play the entire time of the announcement, but just cut the audio. Don't they have the sense to pause the video when they start in on an announcement? Is it not possible, technically, on some planes?