How does HDMI work?
HDMI is essentially a very fat pipe that can pump out a massive amount of digital information between two devices. HDMI cables have 5Gbps worth of bandwidth available (and up to 10Gbps with the newest version), meaning it has more than enough capacity to carry an HD video signal as well as up to eight channels of 24-bit high-quality audio, all uncompressed. This means there’s no conversion of the signal (say, from digital to analog and then back again) or any compression that could possibly affect video or sound quality. And it does it all through one cable.
