A movie color bar is a color bar picture that points out the beginning of video content such as movies and TV programs. It usually lasts for 60 seconds and can be used to calibrate the color and brightness of the playback device, or it can be used as a symbolic symbol to let the audience know that the video has started. In the digital age, the title color bar is not as important as it used to be, because modern digital devices have the function of automatic calibration.