1080p high definition. HD refers to high definition, which refers to images or videos with a vertical resolution greater than or equal to 720. The sizes are generally 1280×720 and 1920×1080, while 1080p refers to ultra-clear resolution. Usually the picture resolution of 1080P is 1920×1080; Ultra HD resolution (sharpness) is much higher than HD resolution.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The definition of 1080P and HD is higher than 1080P.What we commonly call HD is also the so-called 720p, and 1080p is what we commonly call ultra-clear resolution. Ultra-clear resolution is much higher than high-definition resolution, so if you want a better viewing experience , then you can choose 1080p video, the clarity will be better.
Clarity can generally be expressed in terms of resolution, because the higher the resolution, the more pixels can be displayed on the same screen, and the more details can be shown in the video image. 720P and 1080P are the two most commonly seen image qualities in video images, while 2K and 4K are 2048x1080 and 3840x2160 resolutions respectively. These two resolutions are generally used in more expensive display devices such as 4k displays. .
hd introduction:
HD refers to high definition, and a resolution exceeding 720P is high definition. HD refers to images or videos with a vertical resolution greater than or equal to 720, also known as high-definition images or high-definition videos. The sizes are generally 1280×720 and 1920×1080. "HD" stands for "high definition".
HD has three display formats, namely: 720P (1280×720, non-interlaced, field frequency is 24, 30 or 60); 1080i (1920×1080, interlaced, field frequency 60); 1080p (1920×1080, non-interlaced, field frequency is 24 or 30)
1080P introduction:
1080P is a video display format, the foreign language letter P means Progressive scan is different from 1080i interlaced scan. The number 1080 means that there are 1080 horizontal scan lines in the vertical direction. Usually the picture resolution of 1080P is 1920×1080.
1080P is the high-definition standard format determined by the American Society of Motion Picture and Television Engineers, among which 1080p is known as the top display format of digital TV. TVs in this format can achieve a resolution of 1920×1080 under progressive scan. 1080p HD refers to progressive scanning with a physical resolution of up to 1920×1080, that is, 1080p HD, which is currently the top HD specification. 1080pBD refers to the digital copy of the officially published Blu-ray DVD, with a resolution of up to 1920×1080 format. The original Blu-ray disc BD must be a copy of the original data. It is prohibited to add, delete, or change the original data and structure. The changed ones are called with other names, such as BD-remux, BD-RE, BDRip, etc.
The frame rate is usually 25, which can be expressed after P, such as 1080P25, which means that there are 25 images in one second. Common frame rates include 24, 30, 60, etc. HDMI does not necessarily have 1080P output. The picture does not have to support 1920×1080 to be considered 1080P output. As long as the vertical scanning lines exceed 1080, it can be called 1080P. There is no strict specification for horizontal pixels. Full HD is A standard that regulates vertical and horizontal scanning pixels. 1080P only regulates vertical pixels (equivalent to horizontal scanning lines).
Extended information:
Technical differences in image clarity
The picture clarity of the TV is based on horizontal clarity degrees. In layman's terms, you can divide the picture on the TV into many scanning lines horizontally. The finer the division, the clearer these images will be, and the more scan lines with horizontal lines. The defined unit is "TVLine", also called line.
It means that looking from the horizontal direction, it is equivalent to standing up each scan line and then multiplying it by the aspect ratio of 4:3 or 16:9 to form the total number of lines in the horizontal direction.
The following are some common TV scanning formats:
D1 adopts 480i format, which has the same definition as NTSC analog TV. 525 vertical scanning lines, 480 visible vertical scanning lines, 4:3 or 16:9, interlaced/60Hz, line frequency 15.25KHz.
D2 is a 480P format, the same as progressive DVD, 525 vertical scanning lines, 480 visible vertical scanning lines of 4:3 or 16:9, resolution 640×480, progressive/60Hz, Line frequency 31.5KHz
D31080i format is a standard digital TV display mode, 1125 vertical scanning lines, 1080 visible vertical scanning lines in 16:9, resolution 1920×1080, interlaced/60Hz, line frequency 33.75KHz
D4720p format is a standard digital TV display mode, with 750 vertical scanning lines, 720 16:9 visible vertical scanning lines, resolution of 1280×720, progressive/60Hz, line The frequency is 45KHz.
D5 is in 1080p format, which is a standard digital TV display mode with 1125 vertical scanning lines, 1080 16:9 visible vertical scanning lines, and a resolution of 1920×1080 progressive scanning. This is a professional format.
There is also 576i, which is a standard PAL TV display mode, 625 vertical scanning lines, 576 visible vertical scanning lines in 4:3 or 16:9, interlaced/50Hz, designated as 576i or 625i .
In the above standards, "I" means interlaced and "P" means progressive. The HDTV standard is a high-quality video signal standard, including 1080i, 720p, and 1080p. That is to say, D3, D4, and D5 are all HDTV standards. Supporting 480p is also called supporting HDTV.
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