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Motion picture file encryption method and digital rights management method using the same

  • US 20050123136A1
  • Filed: 12/08/2004
  • Published: 06/09/2005
  • Est. Priority Date: 12/08/2003
  • Status: Active Grant
First Claim
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1. A method of encrypting a motion picture file comprising a plurality of video samples, the method comprising:

  • extracting location information of at least one video sample;

    extracting video samples based on the location information which has been extracted;

    encrypting a portion of extracted video samples, excluding video sample identifying information that identifies the extracted video samples, according to encryption information; and

    generating an encrypted motion picture file by re-inserting encrypted video samples into the motion picture file.

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