The Nikon D800E supports a maximum video resolution of 1920 x 1080 pixels. That's over six times the video resolution of the most frequently found video resolutions of 640 x 480 pixels. In addition, this camera supports a video resolutions of 1280 x 720 pixels. A video resolution of 1920 x 1080 pixels is equivalent to Full HD video. You will require a Full HD TV or better to appreciate this level of detail.
A 1920 x 1080 pixels video resolutions is in fact the best supported video resolution across all high megapixel cameras that were released more than two years ago.
Across comparable types of digital camera the worst supported video resolution is 320 x 240 pixels.
What does "video resolutions" mean?