| 摘要 |
A system, may include, at least one of audio, image, and a video comprising a plurality of frames. A usage preferences description, describing preferences of a user with respect to the use of at least one of the audio, image, and video, where the description normally includes multiple preferences. In one aspect, a protection attribute with respect to at least one of the preferences indicates whether one of the preferences is considered public or private. Other aspects of the user preferences description include other attributes, alone or in combination.
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