| 摘要 |
A system ( 10 ), method ( 60 ) and apparatus ( 14 ) are provided for updating a first advertisement in a video program stream with a second advertisement, based on temporal metadata replacement rules and instructions embedded in or otherwise associated with the advertisements. The system ( 10 ) includes a video stream encoder ( 12 ) for embedding temporal metadata into the advertisements. The method ( 60 ) includes a step ( 62 ) of reading the temporal metadata and a step ( 66 ) of updating the advertisements based on the temporal metadata. The apparatus ( 14 ) includes a recording device ( 22 ) for recording ( 64 ) portions of the video program stream, including the advertisements. The apparatus ( 14 ) also includes an advertisement reader ( 18 ) for identifying and locating suitable replacement advertisements based on the temporal metadata, and an advertisement insertion module ( 24 ) for replacing advertisements in the stored video program based on the temporal metadata.
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