Method of realizing detection on broken screen defect in video file based on video decoder

The invention relates to a method for realizing detection on a broken screen defect in a video file based on a video decoder. The method comprises the following steps: the video decoder receives and decodes the video file; if a grammar detection module detects that a grammatical mistake is present in the video file which is being decoded, the video decoder marks that the video file has the broken screen defect, otherwise, a content layer analysis module determines whether the video file which is being decoded and has no grammatical mistaken has the broken screen defect; if the video file has the broken screen defect, the video decoder marks that the video file has the broken screen defect, otherwise, the video decoder marks that the video file has no broken screen defect and determines whether the video file is completely decoded; if the video file is completely decoded, the video decoder outputs a decoding result, and ends and quits. The method for realizing detection on the broken screen defect in the video