4K UHD (Ultra HD) refers to videos roughly four times the resolution of Full HD. 4K UHD video delivers a premium picture quality that makes the viewing experience more detailed, vibrant, and lifelike. All Smithsonian Earth programs shot in 4K UHD are available in resolutions up to 3860x2160. Please see our Help Center for more details on the types of devices, televisions, and hardware that support 4K UHD resolution.
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