VIDEO FILE PROCESSING METHOD AND DEVICE, AND WATERMARK EXTRACTION METHOD AND DEVICE

摘要

Disclosed are a video file processing method and device and a watermark extraction method and device. The video file processing method comprises: obtaining video data and audio data of a video file; embedding first watermark information in the video data; embedding second watermark information in the audio data in an associated manner; and obtaining a watermark embedded video file. In the present application, mutually related audio and video watermarks are add into the video file by using the temporal and spatial relevance of a video sequence and an audio data contained in the video, thereby increasing the watermark coverage of the video file. In addition, the mutual verification between audio and video watermarks improves the robustness of embedded watermarks against malicious tampering.