音视频同步技术在广播电视节目制作中的应用  

Application of Audio and Video Synchronization Technology in Radio and Television Program Production

作　　者：章卫峰 ZHANG Weifeng(Zhushan Convergent Media Center,Shiyan 442200,China)

机构地区：[1]竹山县融媒体中心,湖北十堰442200

出　　处：《电声技术》2025年第2期131-133,共3页Audio Engineering

摘　　要：随着高清电视和网络媒体的快速发展,音视频同步技术在广播电视节目制作中的重要性日益突出。通过对当前音视频同步系统的分析,深入研究节目时钟参考(Program Clock Reference,PCR)、显示时间戳(Presentation Time Stamp,PTS)/解码时间戳(Decoding Time Stamp,DTS)、音视频缓冲区控制等关键技术在实际制作环境中的应用。基于自适应缓冲区控制的音视频同步方案能将音视频延迟控制在±15 ms以内,满足广播级节目制作要求。With the rapid development of HDTV and network media,the importance of audio-video synchronization technology in radio and television program production is increasingly prominent.Through the analysis of the current audio-video synchronization system,the application of key technologies such as Program Clock Reference(PCR),Presentation Time Stamp(PTS)/Decoding Time Stamp(DTS) and audio-video buffer control in the actual production environment is deeply studied.The audio-video synchronization scheme based on adaptive buffer control can control the audio-video delay within ±15 ms,which can meet the requirements of broadcast-level programming.

关 键 词：音视频同步 时间戳 缓冲区控制 节目时钟参考(PCR)时钟恢复 

分 类 号：TN948.1[电子电信—信号与信息处理]