High Definition
High-definition video generally refers to any video system of higher resolution than standard-definition (SD) video, most commonly at display resolutions of 1280×720 (720p) or 1920×1080 (1080i or 1080p).
With high definition video conferencing, video clarity is so real and the true-to-life people dimensions are so accurate that the far end participants appear to be just across the table.
It has to be seen to be believed!

