发明申请
- 专利标题: METHOD AND SYSTEM FOR MULTIPLE PASS VIDEO CODING
- 专利标题(中): 多通道视频编码方法与系统
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申请号: US12131268申请日: 2008-06-02
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公开(公告)号: US20080225959A1公开(公告)日: 2008-09-18
- 发明人: Ligang Lu , Vadim Sheinin
- 申请人: Ligang Lu , Vadim Sheinin
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 主分类号: H04N7/26
- IPC分类号: H04N7/26
摘要:
A real-time MPEG video coding system with information look-ahead for constant bit rate (CBR) applications, such as, for example, Video-on-Demand (VoD) over ADSL. This scheme employs two MPEG encoders. The second encoder has a buffer to delay the input by an amount of time relative to the first encoder to create a look-ahead window. In encoding, the first encoder collects the information of statistics and rate-quality characteristics. An on-line information processor then uses the collected information to derive the best coding strategy for the second encoder to encode the incoming frames in the look-ahead window. The second encoder uses the encoding parameters from the processor as the coding guide to execute the coding strategy and generate the final bitstream.
公开/授权文献
- US07844002B2 Method and system for multiple pass video coding 公开/授权日:2010-11-30
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