Research On The Real-time Video Recover And Video Frame Extracting Technology

Real-time video recover and video frame extract technology is the important parts of network information collection and network security management. It is one of the most important research directions, related to national network sovereign right and information franchise.RTC(Real-Time Communications) application system on hand adopts video encode and decode standard under the flag of patent and undocument self-definite specification, which adds the recover difficulty of video information. Aiming at this case, starting from the feature of video encode and real-time video communication, this thesis uses reasonably video encode technology, video frame processing technology, AVI(Audio Video Interleave) file technology and process injection technology and provides four processing code matching up to real-time video recover, that is to say, this thesis makes use of video decoder developed autonomously, AVI file system, RTC application system and RTC SDKs(Software Development Kits) to recover.This thesis provides how to encapsulate real-time video data with given encode standard and generate AVI file in accordance with the framing rule of AVI file technology, and then implement recover method. This thesis exposes how to inject RTC application system process special with real-time video data with unbeknown encode standard, and invoke its inner decoder process.This thesis provides the process technology that how to converse static picture from DIB(Device Independent Bitmaps) modal incorporated with the process of video frame recovered, incorporating BMP(Bit Map Picture) with JPEG(Joint Photographic Experts Groups) static picture process technology.Aiming at the anti-encryption of data encryption on machine code, this thesis probes that the invocation and intercept of encryption and disclosure every time with machine code injected. This method, by means of anti-compile analysis technology, gets entry and exit data with encryption and disclosure function, and then disclose the data intercepted.Real-time video recover and video frame extract technology what this thesis researches, going over the practice and inspection, proves that the recover method is novel, avoiding repetitively develop the video encoder, descending the difficulty of development, increasing the develop speed. The technology implements the recover of real-time video communication adopted open standards, and resolves the recover process with unknown video encode standard and without counterpart decoder. It can process multiple RTCs, and it has a widespread practical value.