The Nikon D5 supports a maximum video resolution of 3840 x 2160 pixels. That's over nine times the video resolution of a 1280 x 720 pixels camera, which is the most frequently found video resolution supported by digital cameras that have been available for more than a year. 1280 x 720 pixels is also supported by this Nikon digital camera. This digital camera also supports a video resolutions of 1920 x 1080 pixels. A video resolution of 3840 x 2160 pixels is equivalent to 4K Ultra HD video. This has four times the detail of Full HD video.
This digital camera's video resolution (3840 x 2160 pixels) is actually the best supported video resolution amongst all cameras of a similar age and type to this digital camera.
Amongst similar types of digital camera the worst supported video resolution is 320 x 240 pixels.
What does "video resolutions" mean?