Audio-video file synthesis method based on fragmentation technique

The invention discloses an audio-video file synthesis method based on the fragmentation technique. The method includes the steps: a non-linear editing client submits a background synthesis task; the background synthesis task is subjected to task legality detection, a background task engine divides the background synthesis task into N sub-tasks, and generating workstations compete for the sub-tasks and lock once taking the sub-tasks; a generating engine is run to generate and transcode files; after the N sub-tasks are all finished, a workflow engine drives the sub-tasks to a synthesis workstation; the synthesis workstation takes the first subtasks, locks them and calls the synthesis engine to synthesize the files and combine the N files into a file; after file synthesis, the workflow engine drives the file to a technical review workstation to technically review and detect the file; after the file is finished, data is achieved. The audio-video file synthesis method has the advantages that synthetic efficiency is improved, synthetic quality is improved, and synthetic time is saved.