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480i Terminology | Dictionary | Explanation 480i defines a resolution. The number 480 stands for 480 lines of vertical resolution, while the letter i stands for interlaced or non-progressive scan. 480i is considered to be an HDTV video mode. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal resolution of 640 pixels and a frame resolution of 640 × 480 or about 30.700 pixels, and a field resolution of 640 × 480 / 2 (because it's interlaced) or about 15.400 million pixels. The field rate (not the frame rate) in hertz can be either implied by the context or specified after the letter i. |
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