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About HD( High-definition ) Video?

High-definition video is video of upper resolution than is standard-definition. While there is no specific meaning for high-definition, generally any video image exceeding 480 horizontal lines (United states) or 576 lines (Europe) is regarded as high-definition. 720 scan lines is mostly the minimum though many systems greatly exceed that. Images of normal resolution captured at rates faster than normal (60 frames/second North America, 50 fps Europe), with a high-speed camera could be considered high-definition in a few contexts.

 

High-definition video or HD video identifies any video system better resolution than standard-definition (SD) video, and a lot commonly involves display resolutions of 1280×720 pixels (720p) or 1920×1080 pixels (1080i/1080p). This document will discusse the concepts of high-definition video, rather than its specific applications in television broadcast (HDTV), video recording formats (HDCAM, HDCAM-SR, DVCPRO HD, , HDV ,D5 HD, AVCHD and XDCAM HD), the optical disc delivery system Blu-ray Disc plus the video tape format D-VHS.

 


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