SYSTEM AND METHOD OF MOTION DETECTION ON ENCRYPTED OR SCRAMBLED VIDEO DATA STREAMS

摘要

Systems and methods of motion detection on encrypted or scrambled video data streams are provided. Some methods can include identifying macroblock size information for an encrypted/scrambled video data stream, and using the identified macroblock size information to determine a presence of motion in the encrypted/scrambled video data stream without decrypting and descrambling the encrypted/scrambled video data stream.