displayStartTime

The time set as the beginning of the composition, in seconds. This is the equivalent of the Start Timecode or Start Frame setting in the Composition Setting

addKey()

Adds a new keyframe or marker to the named property at the specified time and returns the index of the new keyframe.time The time, in seconds, at which to a

timeSpanStart

The time in the composition, in seconds, at which rendering will begin. Setting this value is the same as setting a custom start time in the Render Settings

removePulldown

How the pulldowns are to be removed when field separation is used.It is an error to set this attribute if isStill is true. It is an error to attempt to set

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

replaceWithSolid()

Changes the source of this FootageItem to the specified solid. Creates a new SolidSource object, sets its values from theparameters, andsets mainSource to t

keyTime()

Finds the specified keyframe or marker and returns the time at which it occurs. If no keyframe or marker can be found that matches the argument, this method

featherTypes

An array containing each feather pointメs direction, either 0 outer feather point or 1 inner feather point .NOTE: You cannot change the direction of a feathe

parentFolder

The FolderItem object for the folder that contains this item. If this item is at the top level of the project, this is the project’s root folder app.project

canSetCollapseTransformation

True if it is legal to change the value of the collapseTransformation attribute on this layer.Boolean; read-only.