发明授权
US08031777B2 Multipass video encoding and rate control using subsampling of frames
有权
多帧视频编码和速率控制采用子采样帧
- 专利标题： Multipass video encoding and rate control using subsampling of frames
- 专利标题（中）： 多帧视频编码和速率控制采用子采样帧
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申请号： US11384379申请日： 2006-03-21
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公开(公告)号： US08031777B2公开(公告)日： 2011-10-04
- 发明人: Barin Haskell , Adriana Dumitras , Hsi-Jung Wu , Xin Tong , Thomas Pun
- 申请人： Barin Haskell , Adriana Dumitras , Hsi-Jung Wu , Xin Tong , Thomas Pun
- 申请人地址： US CA Cupertino
- 专利权人： Apple Inc.
- 当前专利权人： Apple Inc.
- 当前专利权人地址： US CA Cupertino
- 代理机构： Kenyon & Kenyon LLP
- 主分类号： H04B1/66
- IPC分类号： H04B1/66
摘要：
An encoder includes an encoder engine, a storage device and a controller to implement an iterative coding process. The encoder engine compresses a selected portion of a data sequence. The storage device stores the compressed portion of the data sequence after each iteration. The controller selects the portion of the data sequence to compress for each iteration. The controller gathers statistics from the compressed portion of the data sequence. The gathered statistics include statistics generated by the selected frames and statistics extrapolated from the selected frames for the non-selected frames. The controller adjusts coding parameters of the encoder engine on each iteration until the gathered statistics meet a specified performance requirement.
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