Movie annotation.

Please note that the Adobe PDF Specification now states,.

"The features described in this sub-clause are obsolescent and their use is no longer recommended.".

The recommended replacement is the SimpleRichMediaAnnotation.

System.Object
    WebSupergoo.ABCpdf13.Objects.IndirectObject
       WebSupergoo.ABCpdf13.Objects.Annotation
          WebSupergoo.ABCpdf13.Objects.ScreenAnnotation