What is HDR (High Dynamic Range)

High Dynamic Range, or HDR, is a technology used to improve image and video quality. It functions by boosting the contrastᅳsharpening the appearance of objects, so the light and dark parts of the viewed world stand out with more clarityᅳin image and video. HDR can work with a wide brightness and color output in a manner that delivers a really good viewing experience. What you usually see as a highlight of a viewed object or scene when you view SDR (or Standard Dynamic Range) images or video will look like a supernova when you view the same under the HDR condition. SDR...

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What is CBR or Constant Bitrate in Video Compression?

Constant Bit Rate (CBR) rate control is used to ensure that compressed videos (or video streams) occupy a certain number of bits per second when they are played back. A fundamental part of any video compression system is in the control of the bit rateᅳhow the available data gets distributed across the video frames. A simple and predictable way of doing this is to allocate the same number of bits per elapsed unit of time (e.g., seconds) for each video and this is how CBR works. In other words, no matter how intricate the scenes being encoded are, or how simple and...

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What is VBR or Variable Bitrate in Video Compression?

While compressing a video, one needs to do a lot of work and tuning to achieve a balance between video quality and file size. One of the important parameters in the video compression process is "rate control" and this specifies how the video is compressed and how the "bit budget" is distributed across a video. One of the rate control techniques is VBR (Variable Bitrate) rate control that offers a nice trade-off between quality and bitrate (filesize) for a video. A very common form of rate control is CBR (Constant Bitrate) encoding. It divides the video file into a number of segments...

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