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Constant Bit Rate (CBR)

Constant Bit Rate (CBR): Mode for encoding audio or video in which the bitrate for each frame or unit is restricted to remain constant.  Bitrate has a direct correlation to file size and quality. The higher the bitrate the better the quality (and the larger the file size). Variable bitrate (VBR) provides an alternative that allows for efficient monitoring of audio or video complexity in able to increase or decrease bitrate accordingly. The result is a lower bitrate for simple scenes, a higher bitrate for more complex visual scenes and, ultimately, yielding a better overall rendering in a smaller or the same file size.  [ Audio Glossary ] [ Video Glossary ]

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