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计算机工程 ›› 2008, Vol. 34 ›› Issue (19): 233-235. doi: 10.3969/j.issn.1000-3428.2008.19.079

• 多媒体技术及应用 • 上一篇    下一篇

基于H.264/AVC SP/SI帧技术的VCR功能实现

吴业清,王 嘉,朱莹莹   

  1. (上海交通大学图像通信与信息处理研究所,上海 200240)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-05 发布日期:2008-10-05

Realization of VCR Functions Based on SP/SI Frame Technology of H.264/AVC

WU Ye-qing, WANG Jia, ZHU Ying-ying   

  1. (Institute of Image Communication and Information Processing, Shanghai Jiaotong University, Shanghai 200240)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-05 Published:2008-10-05

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。

关键词: H.264/AVC标准, 数字VCR, SP/SI帧

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.

Key words: H.264/AVC standard, digital Video Cassette Recording(VCR), SP/SI frame

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