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专利名称：ADAPTIVE RATE CONTROL FOR ENCODING
OF VARIABLE FRAME RATE VIDEO SOURCES
发明人：Wenqing Jiang,Weiping Pan申请号：US136131申请日：20120914
公开号：US20130058398A1公开日：20130307
专利附图：
摘要：Techniques for performing rate control for encoding of video frames areprovided. A first timestamp that indicates a prior video frame capture time and a secondtimestamp that indicates a current video frame capture time are received. A time
difference between these timestamps is determined. An average video data bit encodingrate is multiplied by the determined time difference to calculate a bit budget. Anindication of a number of encoded video data bits of the prior video frame and of anyfurther video frames encoded subsequent to the prior video frame and prior to thecurrent video frame is received. A virtual buffer fill level is adjusted based on a differencebetween the indicated number of encoded video bits and the calculated bit budget. Aquantizer parameter is adjusted based on the adjusted virtual buffer fill level. Thecurrent video frame is encoded according to the adjusted quantizer parameter.
申请人：Wenqing Jiang,Weiping Pan
地址：San Jose CA US,San Jose CA US
国籍：US,US
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