video annotation

Hello,
I wonder if it is possible to refer to a fragment of a video without referring to an actual file?
For example if you want to annotate a scene in the Hollywood movie "Nottinghill".

Regards
Joakim
Co-Chair of Media Annotations group

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Joakim Söderberg, M.Sc, Ph.D Multimedia Indexing
Senior Research Engineer, Media Protocols and Applications
Ericsson Research, Multimedia Technologies