大学校园里的活动是丰富多彩的,对于一些较大型的晚会,有时会采用现场直播,有时在直播的同时需要插播PPT解说或者在解说的过程中需要马上播放视频。这时就需要进行无缝切换,才能保证直播的顺利进行。常见的晚会流程中有节目表演、领导发言、颁奖等,期间可能会进行一些互动,比如晚会开始前的倒计时、电脑抽奖、播放视屏等。这里我以常见的晚会流程为例,来向大家介绍一下具体的实现方法。 Activities on campus are colorful, and for some larger parties, sometimes live broadcasts are sometimes used, sometimes live broadcasts require PPT commentary or the video needs to be played immediately during commentary. At this time you need to seamlessly switch, in order to ensure the smooth progress of live. There are programs, speeches, awards, etc. during the regular evening party. During the evening, there may be some interactive activities such as countdown before the party starts, computer sweepstakes, playing video screens and so on. Here I take the common party process as an example, to introduce to you the concrete realization method.