为了提高电视的画面质量,国家广电总局提出了高清和标清混合直播的发展战略,所以,大部分的电视台都开始慢慢的由标清向高清发展,并且制定出了高清制播系统,新建的高清直播系统将与过去的标清制播系统混合,最终形成高标清混合制播,为观众带来不一样的视觉感受。笔者针对高标清混合制播与画面幅型变换做了一系列的探讨,希望对广大的相关工作者有所帮助。 In order to improve the picture quality of the TV, the State Administration of Radio, Film and Television put forward the development strategy of HD and SD mixed live broadcasting. Therefore, most of the television stations have started to gradually develop from SD to HD and have developed a HD broadcast system. The new HD The live broadcast system will be mixed with the standard SD broadcast system in the past, resulting in a high standard definition mixed broadcast system that will bring different visual experience to the audience. The author made a series of discussions on high definition and definition mixed broadcasting and picture format conversion, hoping to help the broad masses of related workers.