发明授权
US09179165B2 Video encoding control method, video encoding apparatus and video encoding program
有权
视频编码控制方法，视频编码装置和视频编码程序
- 专利标题： Video encoding control method, video encoding apparatus and video encoding program
- 专利标题（中）： 视频编码控制方法，视频编码装置和视频编码程序
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申请号： US13695700申请日： 2011-04-28
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公开(公告)号： US09179165B2公开(公告)日： 2015-11-03
- 发明人: Masaki Kitahara , Atsushi Shimizu , Naoki Ono
- 申请人： Masaki Kitahara , Atsushi Shimizu , Naoki Ono
- 申请人地址： JP Tokyo
- 专利权人： Nippon Telegraph and Telephone Corporation
- 当前专利权人： Nippon Telegraph and Telephone Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Harness, Dickey & Pierce, P.L.C.
- 优先权： JP2010-106851 20100507; JP2010-106852 20100507; JP2010-106853 20100507; JP2010-106854 20100507; JP2010-106855 20100507
- 国际申请： PCT/JP2011/060364 WO 20110428
- 国际公布： WO2011/138923 WO 20111110
- 主分类号： H04N7/26
- IPC分类号： H04N7/26 ; H04N19/85 ; H04N19/172 ; H04N19/15 ; H04N19/61 ; H04N19/114 ; H04N19/117 ; H04N19/124 ; H04N19/132 ; H04N19/152 ; H04N19/177 ; H04N19/194 ; H04N19/80
摘要：
In a video encoding control method of the present invention, each picture is encoded in units of encoding-order picture groups such as GOPs, and when CPB underflow has occurred, an encoding parameter such as a quantization parameter and filter strength of a pre-filter is changed in such a manner that a generated bit rate is reduced, and an encoding-order picture group that is being encoded is re-encoded from its first picture using the changed encoding parameter.
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