1280*720 is a resolution of HDTV video modes, which can be shortened as the name 720p. The number 720 stands for the 720 horizontal scan lines of display resolution (also known as 720 pixels of vertical resolution), while the letter p stands for progressive scan or non-interlaced. When broadcast at 60 frames per second, 720p features the highest temporal (motion) resolution possible under the ATSC and DVB standards. It can be seen as a kind of HD video.
1920*1080 is usually seen as the sign of 1080p. 1080p is the shorthand identification for a set of high-definition television (HDTV) video modes that are characterized by 1080 horizontal lines of vertical resolution and progressive scan, meaning unlike the 1080i display standard, the image is not interlaced. The term usually assumes a widescreen aspect ratio of 16:9, implying a resolution of 1,920 pixels wide by 1080 high. 1080p, sometimes referred to in marketing materials as Full HD, typically refers to the capability to accept 1080p signal and display it with native resolution of at least 1080 lines, as well as the capability to upscale lower-resolution material to 1080p.
In the United States, 720p is the preferred format for Fox, ABC, A&E Television Networks, Ion Television, DirecTV's The 101 Network, and Epix (TV network).
The movie industry has embraced 1080p24 as a digital mastering format in both native 24p form and in 24PsF form. 1080p24 has become an established production standard for digital cinematography and there is plenty of equipment capable of capturing and processing 1080p24 signals. This may be the first universal video standard which transcends continental boundaries, an area previously reserved for 24-frame film. As a HD video mode, 1920*1080 has become the most commonly used in the television industry and movie transmission.
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