Apparatus, system, and method for video encoder rate control
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United States of America Patent
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May 19, 2009
Grant Date -
Apr 21, 2005
app pub date -
Oct 16, 2003
filing date -
Oct 16, 2003
priority date (Note) -
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Abstract
A video encoder includes a programmable rate controller. In one embodiment, the programmable rate controller includes a variable bit rate controller, a constant bit rate controller, and an arbitration logic for selecting one of the two outputs. An embodiment of a variable bit rate controller tracks long-term changes to average bit rate. An embodiment of a constant bit rate controller classifies macroblock types, determines a statistical indicator of complexity for each macroblock type, and generates a target bit rate based on estimated complexity.
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