The optimized method of video coding rate control based on rate distortion

Xiaohui Li; Li Wang

doi:10.1117/12.725217

11 January 2007 The optimized method of video coding rate control based on rate distortion

Xiaohui Li, Li Wang

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62791N (2007) https://doi.org/10.1117/12.725217
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

A method of video coding rate control by joint picture-layer and macroblock-layer is proposed in this paper. In picturelayer, the number of bits in each frame is pre-allocated on the whole, and a reference quantization parameter is determined. Then, according to rate-distortion principle, when each frame is encoded, the optimized quantization parameter is selected for intra-frame different macroblocks with the minimal distortion. The result of simulation shows that the proposed method of video coding rate control can reduce or avoid buffer from overflow or underflow efficiently, stabilify the output bit-steam and improve the peak signal-noise-ratio (PSNR) of re-constructed video signal.

Citation Download Citation

Xiaohui Li and Li Wang "The optimized method of video coding rate control based on rate distortion", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62791N (11 January 2007); https://doi.org/10.1117/12.725217

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