| 基于H.264/AVC SP/SI帧技术的VCR功能实现 |
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| 引用本文： | 吴业清,王嘉,朱莹莹.基于H.264/AVC SP/SI帧技术的VCR功能实现[J].计算机工程,2008,34(19):233-235. |
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| 作者姓名： | 吴业清 王嘉 朱莹莹 |
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| 作者单位： | 上海交通大学图像通信与信息处理研究所,上海,200240 |
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| 摘 要： | 基于H.264/AVC的SP/SI帧能参照不同参考帧重构出相同图像帧的技术和多参考帧技术，提出一种实现H.264/AVC视频VCR操作的方法。该方法能够消除双向码流中的漂移问题。实验结果显示，与传统方法相比，在相同播放速率下，使用该方法可以降低约40%的网络带宽，峰值信噪比的提高超过1 dB。
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| 关 键 词： | H.264/AVC标准 数字VCR SP/SI帧 |
| 修稿时间： | |
Realization of VCR Functions Based on SP/SI Frame Technology of H.264/AVC |
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| WU Ye-qing,WANG Jia,ZHU Ying-ying.Realization of VCR Functions Based on SP/SI Frame Technology of H.264/AVC[J].Computer Engineering,2008,34(19):233-235. |
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| Authors: | WU Ye-qing WANG Jia ZHU Ying-ying |
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| Affiliation: | ??Institute of Image Communication and Information Processing, Shanghai Jiaotong University, Shanghai 200240?? |
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| Abstract: | The main feature of SP/SI frame of H.264/AVC frames is that identical frames can be reconstructed even when different reference frames are used for prediction. This paper proposes a scheme to implement Video Cassette Recording(VCR) functions of H.264/AVC video by utilizing the SP/SI frame and multi-reference frame. It can eliminate the drifting problem of dual-bitstream technique. Experimental results show that the scheme can reduce the network bandwidth by about 40% under VCR operation compared with traditional one, and PSNR improves over 1 dB. |
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| Keywords: | H 264/AVC standard digital Video Cassette Recording(VCR) SP/SI frame |
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