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Variable bit rate (VBR) and constant bit rate (CBR).
可变比特率（VBR）和恒定比特率（CBR）。
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VBR video signal has the character such as nonlinear, time change and abruptness etc.
视频信号具有时变性、非线性和突发性等特点。
youdao
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VBR video signal has the character such as nonlinear, time change and abruptness etc.
视频信号具有时变性、非线性和突发性等特点。
youdao