hasAlpha

When true, the footage has an alpha component. In this case, the attributes alphaMode, invertAlpha , andpremulColor have valid values. When false, those att

fieldSeparationType

How the fields are to be separated in non-still footage.It is an error to set this attribute if isStill is true. It is an error to set this value to FieldSe

displayFrameRate

The effective frame rate as displayed and rendered in compositions by After Effects.If removePulldown is PulldownPhase.OFF,then this is the same as the conf

conformFrameRate

A frame rate to use instead of the nativeFrameRate value. If set to 0, the nativeFrameRate is used instead.It is an error to set this value if FootageSource

alphaMode

The alphaMode attribute of footageSource defines how the alpha information in the footage is to be interpreted.If hasAlpha is false, this attribute has no r

FootageItem object

The FootageItem object represents a footage item imported into a project, which appears in the Project panel.These are accessed by position index number in

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

replaceWithSequence()

Changes the source of this FootageItem to the specified image sequence. In addition to loading the file, the method creates a new FileSource object for the

replaceWithPlaceholder()

Changes the source of this FootageItem to the specified placeholder. Creates a new PlaceholderSource object, sets its values from the parameters, and sets m

replace()

Changes the source of this FootageItem to the specified file. In addition to loading the file, the method creates a new FileSource object for the file and s