在电视画面上叠加字幕通常是通过字幕机实现的，对于不具有字幕机的非专业制作单位，在制作专题片的片头片尾或想在画面上叠加说明文字时便有一定的困难，特别是想用手写体文字叠加在画面上作片头时更是束手无策。如果具备一台简易型特技机 (如松下 WJ－ MX12型 )的话，通过 Superimposing a subtitle on a television screen is usually achieved by a subtitling machine. For non-professional production units that do not have a subtitling machine, there is a certain difficulty in producing the title credit of the feature film or trying to superimpose the explanatory text on the screen, and especially, With handwritten text superimposed on the screen when the film is even more helpless. If you have a simple stunt machine (such as the Panasonic WJ-MX12 type), then