推荐回答（2个）
信号还是pal制啊,数字信号和模拟信号的区别只是编码传输的方式不一样而已.数字电视是转换成10101110110这种信号传出去,另一端再还原.所以不管p制还是n制的事
你想想,难不成改用数字电视了,全世界都要统一变成p制或n制?
我建议你改变以下音频的编码方式,不同步的原因可能是在音频解码端出了问题,试一下mpg1或mpg2的音频编码,码率不要设的过高
补充以下，你这个节目是在大陆播吧？中国是pal制，日本欧美是ntsc
信号还是pal制，数字信号和模拟信号的区别只是编码传输的方式不一样而已。
NTSC是National Television Systems Committee的缩写，意思是“国家电视系统委员会制式”。
NTSC负责开发一套美国标准电视广播传输和接收协议。此外还有两套标准：逐行倒像（PAL）和顺序与存色彩电视系统（SECAM），用于世界上其他的国家。NTSC标准从他们产生以来除了增加了色彩信号的新参数之外没有太大的变化。NTSC信号是不能直接兼容于计算机系统的。
NTSC电视全屏图像的每一帧有525条水平线。这些线是从左到右从上到下排列的。每隔一条线是跳跃的。所以每一个完整的帧需要扫描两次屏幕：第一次扫描是奇数线，另一次扫描是偶数线。每次半帧屏幕扫描需要大约1/60秒；整帧扫描需要1/30秒。这种隔行扫描系统也叫interlacing（也是隔行扫描的意思）。适配器可以把NTSC信号转换成为计算机能够识别的数字信号。相反地还有种设备能把计算机视频转成NTSC信号，能把电视接收器当成计算机显示器那样使用。但是由于通用电视接收器的分辨率要比一台普通显示器低，所以即使电视屏幕再大也不能适应所有的计算机程序。
近几年，行业里迫切的需要采用一套新的电视标准。有种提议使用协议是高清晰电视（HDTV）。HDTV标准可以完全的被计算机系统直接兼容。然而仍然有些设计上的问题没有解决。有些业内专家担心这样的兼容性会严重增加通用电视机的成本。
PAL制式是电视广播中色彩编码的一种方法,全名为 Phase Alternating Line 逐行倒相。它是西德在1962年指定的彩色电视广播标准，它采用逐行倒相正交平衡调幅的技术方法，克服了NTSC制相位敏感造成色彩失真的缺点。西德、英国等一些西欧国家，新加坡、中国大陆及香港，澳大利亚、新西兰等国家采用这种制式。PAL由德国人Walter Bruch在1967年提出，当时他是为德律风根(Telefunken)工作。“PAL”有时亦被用来指625 线，每秒25格，隔行扫描, PAL色彩编码的电视制式。PAL制式中根据不同的参数细节，又可以进一步划分为G、I、D等制式，其中PAL－D制是我国大陆采用的制式
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