Abstract: Content is provided on a medium or is transmitted, for example streamed, with in built protection against unauthorised playback or copying. Video content data is provided in content blocks, each of which relates to a video frame and has a corresponding header. Some content clocks have a digital fingerprint interposed somewhere in the data comprising that content block. Thus, the amount of the data in the content block is increased by the addition of the digital fingerprint. Information identifying the length of the content block in the corresponding header is not altered. Some or all content blocks are obfuscated following the additional of the digital fingerprints. In a media player, de-obfuscation is performed, and digital fingerprints then removed before the resulting content blocks are decoded. Whilst listening to music streamed to a mobile terminal, a user can purchase the track currently being played.

Abstract: Content is provided on a medium or is transmitted, for example streamed, with in-built protection against unauthorised playback or copying. Video content data is provided in content blocks, each of which relates to a video frame and has a corresponding header. Some content clocks have an excess data item, such as a digital fingerprint, interposed somewhere in the data comprising that content block. Thus, the amount of the data in the content block is increased by the addition of the digital fingerprint. Information identifying the length of the content block in the corresponding header is not altered. Some or all content blocks are obfuscated following the additional of the digital fingerprints. In a media player, de-obfuscation is performed, and digital fingerprints then removed before the resulting content blocks are decoded. Without de-obfuscation and removal of the digital fingerprints, correct decoding would not occur.

Abstract: An automated extraction configuration module 16 examines metadata stored on a DVD 15 to determine the configuration of content data stored on it. Extraction configuration data from a memory area 17 is utilised by a DVD decryption and extraction module 18 to extract movie data from the DVD 15, which is written as AVI data to an intermediate format movie data area 14. A mobile format conversion module 19 converts movie data stored in the extracted movie data area 14 and provides a movie in mobile telephone consumable format in a mobile format movie data area 20. The mobile format conversion module 19 utilises a digital rights management (DRM) processing module 21. The conversion uses information specific to the configuration of, and thus is tailored to, a target device. The data also includes two or more media players and a loader program. The mobile device is controlled to run the loader program initially.