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Some mistakenly think the term means half-resolution high-definition. HRHD resolution is actually ¾ height and width of 720p video. By area, the picture is 56.25% of the typical 720p HD broadcast. The HRHD dimensions are precisely half of 1080p video, but this yields only 25% of the original 1080p picture information.
Network Device Interface (NDI) is a software specification developed by the technology company NewTek.It enables high-definition video to be transmitted, received, and communicated over a computer network with low latency and high quality.
Periscope, a live video streaming app for iOS and Android developed by Kayvon Beykpour and Joe Bernstein is launched (and acquired by Twitter before its launch). [48] 2015 May Companies Meerkat, a mobile app that enables users to broadcast live video streaming through their mobile device, releases its app for both iOS and Android. [49] 2016 January
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High-definition video (HD video) is video of higher resolution and quality than standard-definition. While there is no standardized meaning for high-definition , generally any video image with considerably more than 480 vertical scan lines (North America) or 576 vertical lines (Europe) is considered high-definition.
Video quality can be measured with formal metrics like peak signal-to-noise ratio (PSNR) or through subjective video quality assessment using expert observation. Many subjective video quality methods are described in the ITU-T recommendation BT.500. One of the standardized methods is the Double Stimulus Impairment Scale (DSIS).
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