一种直通音频与视频重同步的设计与应用  

A Bypass Audio and Transcoded Video Re-Synchronization Method and Its Application

作　　者：袁金保 黄化吉 杨雪松 YUAN Jinbao;HUANG Huaji;YANG Xuesong(Wellav Technologies Ltd.,Huizhou 516025,China)

机构地区：[1]伟乐视讯科技股份有限公司,广东惠州516003

出　　处：《电视技术》2021年第6期112-114,共3页Video Engineering

摘　　要：数字电视处理前端的转码系统一般由解码系统和编码系统组成。解码系统和编码系统都有各自的音频处理规格。但随着新的音频格式与标准的推出,原转码系统无法支持这些新的音频规格。因此提出一种音频直通方案,对原转码系统无法支持的音频实施直通,并与转码后的视频进行同步,从而使原转码系统轻松实现音频格式的扩展升级。The transcode system in digital television is generally composed of decode system and encode system.Both decode and encode system have their own audio specifications.However,with the introduction of new audio formats and standards,the original transcoding system can not support these new audio specifications.In this paper,an audio pass through method is proposed to implement this audio which cannot be supported by the original transcoding system,and synchronize with the transcoded video,so that the original transcoding system can easily realize the expansion and upgrading of audio format.

关 键 词：音频直通 音视频同步 转码系统 

分 类 号：TN919.81[电子电信—通信与信息系统]