Analysis of the application of video post-production in film and television advertising is studied in the paper. On the basis of improving the authenticity and quality of virtual content, the new production process of virtual production technology also allows the main creative team to feel the real shooting scene throughout the shooting process. Film and television advertising is a very important part of the advertising industry, with the characteristics of general good communication effect and wide range of the communication, which is of the great significance to the development of the advertising industry. Hence, this paper gives the novel ideas on the applications of the video post-production in film and television advertising.