Creates a new AVLayer object containing the specified item, and adds it to this collection.The new layer honors the Create Layers at Composition Start Time
The number of indexed properties in this group.For layers, this method returns a value of 3, corresponding to the mask, effect, and motion tracker groups, w
When true, has the same effect as setting the Force alphabetical order option in the File > Import > File dialog box.Boolean; read/write.
Creates and returns a PropertyBase object with the specified name, and adds it to this group.In general, you can only add properties to an indexed group a p
The effects available in the application.Array, with each element containing the following properties; read-only:displayName String representing the localiz
Finds and returns a child property of this group, as specified by either its index or name.A name specification can use the same syntax that is available wi