frameDuration

The duration of a frame, in seconds. This is the inverse of the frameRate value frames-per-second .Floating-point; read/write.

hasVideo

When true, the AVItem has an video component.ユ In a CompItem, the value is linked to the composition.ユ In a FootageItem, the value is linked to the mainSour

selectedLayers

All of the selected layers in this composition. This is a 0-based array the first object is at index 0 .Array of Layer objects; read-only.

setProxyWithSequence()

Sets a sequence of files as the proxy of this AVItem, with the option of forcing alphabetical order. Loads the specified file sequence into a new FileSource

file

The ExtendScript File object for the footage’s source file.If theFootageItem’smainSource is a FileSource, this is the same as FootageItem.mainSource.file.Ot

layers

A LayerCollection object that contains all the Layer objects for layers in this composition. See LayerCollection object .LayerCollection object; read-only.