摘要
无缝拼接技术是流播出系统的关键技术。本文研究并实现了精确到帧的无缝拼接技术,通过对拼接点处的图像组GOP进行帧截取、去掉多余帧、重编码部分帧的操作,可以将任意帧作为拼接点,并且使输出的视频无黑场无马赛克。我们设计并实现了基于无缝拼接技术的流播出系统,并已经应用于上海百视通IPTV播出,取得了较好的效果。
This paper studies and realizes frame-accurate seamless splicing technology which is the key technology of broadcast system. By reserve, discard and re-encode some frames in GOP（Group of Picture） at splicing point, any frame can be chosen as splicing point and the output stream can be played with no mosaic and blank screen. Based on seamless splicing, a broadcast system is designed and is successfully used in the Shanghai IPTV broadcast system.
基金
上海市科学技术委员会的资助(课题编号为11DZ2281200)
