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What is Quality-Defined Variable Bitrate (QVBR)?

What is Quality-Defined Variable Bitrate (QVBR)?

To address the shortcomings of traditional Constant Bitrate (CBR) and Variable Bitrate (VBR) rate control modes, AWS Elemental created Quality-Defined Variable Bitrate, or QVBR, a content-conscious version of VBR bitrate control.

QVBR analyzes every macroblock, frame, and scene in the video source, and automatically allocates bits to address information differences: higher bitrate use during complex video segments, and lower bitrate use during less complex video segments.

The result: an enhanced version of variable bitrate control that minimizes wasted bits and scales video bitrate to maintain consistent video quality.

 

How QVBR bitrate savings and benefits stack up for video providers:

 

More infor, How Does Quality-Defined Variable Bitrate Improve Video Quality?

Source: https://aws.amazon.com/media/tech/quality-defined-variable-bitrate-qvbr/



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