For details below : 1 ) video changed from mpeg2 ps to mpeg2 ts 2 ) audio of ntsc format that can not be decoded by stb could be changed from dolby acs coding standard to mpeg1 / 2 layerll standard , and packed into mpeg2 ts format 3 ) well synchronized with audio and video by a new arithmetic " successive time stamp " this thesis made a introduction of mpeg2 standard in detail ; discussed the system timing model ; indicated the key during the transforming of video and audio ; especially explain how to deal with the pcr 2 )针对目前机顶盒不能解码的ntsc制式dolbyac3编码算法音频信息,转换成mpeg1 2layer编码,并打成满足mpeg2ts语法的信息包。 3 )提出了能使音视频达到良好同步的继承性时间标签打入算法本文详细介绍了mpeg2标准的语法,讨论了mpeg2系统的时间模型从而指出视音频处理中的关键,对pcr的处理进行了详细的分析,提出了新的视、音频同步算法。
百科解释
NTSC制式,又简称为N制,是1952年12月由美国国家电视标准委员会(National Television System Committee,缩写为NTSC)制定的彩色电视广播标准,两大主要分支是NTSC-J与NTSC-US(又名NTSC-U/C)。