The true HD begins with 1280×720 resolution, also known as HD Ready. That is to say, the image will be much clearer or "sharper".īut how can we determine a display resolution as the high definition? The more pixels “dots” you have on per unit area, the higher the resolution you’ll get. When a video is of 1280×720 or 720p, you have the width in 1280 pixels and the height in 720 pixels, namely 921,600 pixels. Resolution is measured in the number of pixels in each dimension, often present as “width × height”. When there are 1,280 pixels on the horizontal, you will have 1,280 vertical lines from left to right, namely scan lines. Pixels are the individual “dots” crowding on a display that compose the whole image. To learn about that, you have to know the following concepts: Pixel Relative to standard-definition video, the high-definition video comes with higher resolution and quality.īut how should you understand the exact meaning of HD video? HD video is short for high-definition video. We often take great delight in streaming HD movies or MVs on YouTube, but what if we can watch a 1080p film offline on Android by using a YouTube video downloader app that supports HD video download?
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