发明申请
- 专利标题: JOINT FRAME RATE AND RESOLUTION ADAPTATION
- 专利标题(中): 联合框架速度和分辨率适应
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申请号: US13018298申请日: 2011-01-31
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公开(公告)号: US20120195372A1公开(公告)日: 2012-08-02
- 发明人: Jiefu Zhai , Xiaosong Zhou , Hsi-Jung Wu
- 申请人: Jiefu Zhai , Xiaosong Zhou , Hsi-Jung Wu
- 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
- 主分类号: H04N7/32
- IPC分类号: H04N7/32 ; H04N7/12
摘要:
A video coder employs techniques for applying frame rate adaptation and variable resolution adaptation in response to environmental coding factors present at the coding terminal. According to such techniques, a coder may estimate a coding quality level to be applied based on the environmental coding factors. The coder may retrieve from a controller table, settings for resolution and frame rate based on the estimated quality level. Optionally, the coder further may retrieve settings identifying a range of quantization parameters that may be used during coding. Prior to coding, the coder may configure input video data to match the resolution and frame rate settings retrieved from the controller table. Thereafter, the coder may code the reconfigured input video data by motion-compensation prediction constrained, as applicable, by the retrieved quantization parameter range.
公开/授权文献
- US09215466B2 Joint frame rate and resolution adaptation 公开/授权日:2015-12-15
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