HD cameras, which can be high-quality, high-resolution images, taken out of the picture can reach 720-line progressive scan mode, resolution 1280 * 720 or 1080 lines interlaced scanning to reach a resolution of 1920 * 1080 digital camera.
HD Camcorder Category
DV description:
Can be high-quality, high-definition images, taken out of the picture can reach 720-line progressive scan mode, resolution 1280 * 720 or 1080 lines interlaced scanning to reach a resolution of 1920 * 1080 digital camera. Distinguished from the recording format, the market mainstream HD camcorders generally have two types, one is the first out of HDV, the other is AVCHD. The former is mainly used as a recording medium cassette, the video encoding is MPEG-2, is collected after the M2T file format (or MPEG format); while the latter have a CD, flash memory, hard disk and other recording medium, the video encoder is H .264, the file format for recording M2TS.
HD Concept
Many people may still only vaguely know what 1080P. When you see digital TV in the ad, there will always say that they support 1080i/1080P this standard, we look at both 1080i and 1080P represent what it meant - 1080i and 720p are recognized in the international digital high-definition TV standard. Where i represents interlaced letters, the letter P stands for progressive scan. 1080, 720 represents the vertical resolution can be achieved. 1080P HD signal format is the home of the highest standard.
HD Standard
With the advancement of high-definition video surveillance to the rapid development of society, mainly to solve the people in the normal monitoring process, "detail" not see the problem. "HD" or "high-resolution" on the definition of definition, from the earliest digital television, HDTV, also known as "HDTV", is a high-definition television standard format by the American Association of Film and Television Engineers determined. HDTV, is measured as the number of horizontal scanning lines, and its high concentration divided as follows [1]:
(1) 1080i format is a standard digital TV display mode, 1125 vertical scan lines visible vertical scanning lines 1080, 16:9, resolution of 1920 × 1080, interlaced / 60Hz, line frequency of 33.75KHz.
(2) 720p format is a standard digital TV display mode, 750 vertical scan lines, 720 visible vertical scanning lines, 16:9 resolution of 1280 × 720, progressive / 60Hz, line frequency is 45KHz.
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