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# Initialization options

Specify options to configure the initialization of a movie.

## Topics

### Options

[`AVMovieReferenceRestrictionsKey`](/documentation/AVFoundation/AVMovieReferenceRestrictionsKey)

A key that specifies restrictions for a movie to use when it resolves references to external media data.

[`AVMovieShouldSupportAliasDataReferencesKey`](/documentation/AVFoundation/AVMovieShouldSupportAliasDataReferencesKey)

A key that specifies a Boolean value that indicates whether the system parses and resolves alias data references in the movie.


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