Invention Grant
- Patent Title: Method and system for multiple pass video coding
- Patent Title (中): 多路视频编码的方法和系统
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Application No.: US12131268Application Date: 2008-06-02
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Publication No.: US07844002B2Publication Date: 2010-11-30
- Inventor: Ligang Lu , Vadim Sheinin
- Applicant: Ligang Lu , Vadim Sheinin
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Daniel P. Morris, Esq.
- Main IPC: H04N7/12
- IPC: H04N7/12 ; G06F15/16

Abstract:
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.
Public/Granted literature
- US20080225959A1 METHOD AND SYSTEM FOR MULTIPLE PASS VIDEO CODING Public/Granted day:2008-09-18
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