In order to specify that an action is to target an element of an external movie, the external movie must be identified by either its name or its ID. To do this, two new target atom types have been introduced; these atoms are used in addition to the existing target atoms, which may specify that the element is a particular Track or object within a Track such as a Sprite.
A movie ID may be specified by an expression.
These are the additional target atoms provided in QuickTime 4:
[(ActionTargetAtoms)] =
<kActionTarget>
<kTargetMovieName>
[Pstring MovieName]
OR
<kTargetMovieID>
[long MovieID]
OR
[(kExpressionAtoms)]
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