Audio and video forgery synchronization method and forgery system formed by same

The invention particularly relates to an audio and video forgery synchronization method and a forgery system formed by the same, and the audio and video forgery synchronization method comprises the following steps: segmenting a forgery video according to a preset time, and processing a plurality of frames of images in each segment time to obtain lip-shaped features of the time period; extracting voice features in the corresponding time period of the forged audio; determining lip shape-voice matching points according to the matching probability of the lip shape features and the voice features; and the forged video and the forged audio are aligned according to the lip shape-voice matching points. According to the lip-shaped feature and the voice feature, matching is carried out to determine the matching point, alignment is carried out according to the matching point to conveniently realize overall alignment of the forged audio and video, the matching point and alignment process can be continuously carried out,