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An intra-frame rate control algorithm for ultra low delay H.264/AVC coding

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2 Author(s)
Yun-Gu Lee ; Digital Media R&D Center, Samsung Electron. Co., Ltd., Seoul ; Byung Cheol Song

In this paper, we present an intra-fame rate control algorithm for ultra low delay H.264/AVC coding. In real time video coding, all the macro-blocks within a current frame may be unavailable before encoding them. Hence the proposed scheme predicts relative complexity of the current block from complexity of available macro-blocks within previous and current frames. Then, the algorithm allocates bits to each macro-block considering the relative complexity between the macro-block and the current frame. Quantization parameter of each macro-block is obtained by comparing the generated and allocated bits and is refined for improving coding performance. The required buffer size is only around one-third of average bits required for encoding a single frame. Simulation results show that the proposed algorithm can prevent the buffer from overflow and underflow while it provides better coding performance.

Published in:

Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on

Date of Conference:

March 31 2008-April 4 2008