发明名称 |
Method and Apparatus for Bit Rate Reduction in Video Telephony |
摘要 |
Method and apparatus for encoding video is described. In one example, average of motion vectors for each of a plurality of blocks is maintained over a threshold number of inter-coded frames in the video. The running average of motion vectors for each of the plurality of blocks is compared to a threshold value. Each of the plurality of blocks the running average of which does not satisfy the threshold value is encoded using a first quantization parameter. Each of the plurality of blocks the running average of which satisfies the threshold value is encoded using a second quantization parameter. The second quantization parameter results in a coarser quantization of transformed coefficients than the first quantization parameter.
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申请公布号 |
US2008159385(A1) |
申请公布日期 |
2008.07.03 |
申请号 |
US20060616347 |
申请日期 |
2006.12.27 |
申请人 |
GENERAL INSTRUMENT CORPORATION |
发明人 |
JOYCE GERALD R.;BURKE TIMOTHY M.;FLANAGAN DAVID R. |
分类号 |
H04B1/66 |
主分类号 |
H04B1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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