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Is Variable Bit Rate allowed in MPEG-1 and MPEG-2 Audio?

April 26, 2017allowed audio bit mpeg-1 MPEG-2 rate

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Is Variable Bit Rate allowed in MPEG-1 and MPEG-2 Audio?

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For Layer III, the answer is simply ‘yes’. For Layers I and II, according to the standard, it is not mandatory for decoders to support Variable Bit Rate (VBR). However, in practice the majority of the decoders do support Variable Bit Rate, and it is perfectly in line with the standard to specify for a certain application that decoders should support VBR.