With screens in their living rooms, on their desktops, laptops and hand-held devices, Americans are watching more TV and video than ever before, according to the Nielsen Company. The media research firm today released figures showing usage across the “three screens” — television, Internet and mobile devices.

Nielsen says the average American watches more television than ever at 127 hours, 15 minutes per month, while also spending 9% more time using the Internet (26 hours, 26 minutes per month) from last year. At the same time, a small but growing number of Internet and mobile phone users are watching video online (2 hours, 19 minutes per month), as well as using their cell phones to watch video (3 hours, 15 minutes per month).