基于TS流文件的倍速文件的生成方法

A Method of Generating Trick Files From TS Stream File

针对当前快进快退技术中所生成的倍速文件对多媒体播放设备兼容性较差的问题,提出一种基于TS(传输流)视频文件的倍速文件的生成方法。该方法通过对TS原文件进行解析获取生成倍速文件所需要的信息,按照一定策略选取关键帧,修改选取的关键帧中相关内容等来实现倍速文件的生成。该方法在生成的倍速文件中修改了关键帧的部分内容,使得倍速文件符合MPEG-2和数字视频广播(DVB)标准,保证了文件与多媒体设备的兼容性,提升了用户体验。

According to the problem of poor compatibility between multimedia playback devices and trick files, which were generated for fast - forward and fast - backward playback, a method of generating trick files from TS stream file is proposed. The method obtains the information for generating trick files by analysis of the original TS file, selects key frames according to certain strategy, changes related fields to realize the generation of trick files. The method changes related fields during generating trick files to make trick files conform to MPEG2 and DVB standards, to ensure compatibility between trick files and muhimedia playback devices, and to improve the user experience.