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
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
CLC Number:
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.
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.