VARIABLE BITRATE ENCODING FOR MULTIPLE VIDEO STREAMS
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United States of America Patent
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Jun 11, 2015
app pub date -
Dec 9, 2013
filing date -
Dec 9, 2013
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Abstract
A video processing device encodes a set of multiple input video streams by varying an average bit rate for each input video stream within a corresponding set of bounded average bit rates identified based on a target average bit rate (TABR). To encode each input video stream, the rate control module identifies the amount of space remaining to store the encoded video streams and, based on this information and the TABR, calculates an upper bound average bit rate (UBABR) and lower bound average bit rate (LBABR) for the selected input video stream. The rate control module varies the output bit rate for the corresponding encoded video stream according to the complexity of video information in the video stream, but constrains the output bit rate to ensure that the average output bit rate is constrained within the UBABR and LBABR.
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