Sughrue Mion, PLLC
Motion picture file encryption method and digital rights management method using the same
A method of encrypting a motion picture file and a method of digital rights management using the same, wherein encryption method includes: extracting information on the location of at least one video sample, which is a real-time streaming unit, from meta-data of the motion picture file; extracting the video samples based on the location information; encrypting the extracted video samples, excluding a start code within a video sample header of each extracted video sample, based on predetermined encryption information; and producing an encrypted motion picture file by recombining the encrypted video samples. Since the file is encrypted in units of video object planes (VOPs) while maintaining an MEPG-4 file format, the encryption method can be easily applied to a completed file format and streaming service is also possible.
Samsung Electronics Co., Ltd. Sejong Industry-Academy Cooperation Foundation
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Jun-il Dong-il Dong-kyoo Yong-bin Soon-yong
Kim Shin Shin Kim Choi