LOW-DELAY WINDOW-BASED RATE CONTROL SCHEME FOR VIDEO QUALITY OPTIMIZATION IN VIDEO ENCODER

被引:0
|
作者
Li, Yuan [1 ]
Jia, Huizhu [1 ]
Zhu, Chuang [1 ]
Li, Meng [1 ]
Xie, Xiaodong [1 ]
Gao, Wen [1 ]
机构
[1] Peking Univ, Natl Engn Lab Video Technol, Beijing 100871, Peoples R China
关键词
Rate control; buffer latency; video quality; window-based; video encoder; REAL-TIME VIDEO;
D O I
暂无
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The consistent video quality and encoding latency due to buffering are two important aspects in designing rate control scheme for the application of real-time video coding system. To well balance these two contrary objectives, we firstly analyze the constraint of buffer latency and the definition of a "consistent" video quality. Then a window-based rate control scheme is proposed with one window for controlling the rate and latency, while the other window for optimizing video quality. By applying low complexity frame level rate-distortion model in the testing sequences, our proposed method shows excellent performance in balancing the encoder buffer latency and optimized video quality. Besides, this one-pass rate control scheme is highly practical for the real-time video coding application.
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页数:5
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