湖南卫视高标清同播的技术应对策略

Technology Strategy of HDTV&SDTV Simulcast of Hunan Satellite TV

随着湖南卫星频道由标清转为高标清同播,在技术管理上相应需要发生一系列变化,在节目制作还要面对标清播出环境的今天,高/标清兼容是一个长期的过程,而兼容带来了许多我们值得关注的问题。文章就标清系统向高清系统过渡中"宽高比管理"、"字幕"、"色域管理"、"限幅电平"以及"音频管理"五个方面的问题及应对策略进行了详细阐述。

HDTV&SDTV simulcast is a major strategy for the transition from SDTV to HDTV. However, in process of the implementation, there are some technical problems to be resolved, such as aspect ratio management, subtitles, colour range management, slice level and audio management. Hunan TV develops a series of strategies to solve technical problems mentioned above, and wishes they will be helpful for other TV stations.