Adobe After Effects - Manual (Page 692)

height
duration
frameDuration
ntscDropFrame
pixelAspect
name
To the top
Note:
source
sourceTime(t = time)
effect(name)
effect(index)
mask(name)
mask(index)
Returns the width of the footage item, in pixels.
Return type: Number.
Returns the height of the footage item, in pixels.
Return type: Number.
Returns the duration of the footage item, in seconds.
Return type: Number.
Returns the duration of a frame in the footage item, in seconds.
Return type: Boolean.
Returns true if the timecode is in drop-frame format. (After Effects CS5.5 and later.)
Return type: Number.
Returns the pixel aspect ratio of the footage item.
Return type: String.
Returns the name of the footage item as shown in the Project panel.
Layer Sub-objects attributes and methods (expression reference)
For After Effects CC and CS6, the Expression language menu, the "Layer Sub-objects", "Layer General", "Layer Properties", "Layer 3D",
and "Layer Space Transforms" have been arranged into a "Layer" submenu.
Return type: Comp or Footage.
Returns the source Comp or source Footage object for the layer. Default time is adjusted to the time in the source. Example:
source.layer(1).position
Return type: Number.
Returns the layer source corresponding to time t. (After Effects CS5.5 and later.)
Return type: Effect.
Argument type: name is a String.
After Effects finds the effect by its name in the Effect Controls panel. The name can be the default name or a user-defined name. If multiple
effects have the same name, the effect closest to the top of the Effect Controls panel is used. Example:
effect("Fast Blur")("Blurriness")
Return type: Effect.
Argument type: index is a Number.
After Effects finds the effect by its index in the Effect Controls panel, starting at 1 and counting from the top.
Return type: Mask.
Argument type: name is a String.
The name can be the default name or a user-defined name. If multiple masks have the same name, the first (topmost) mask is used. Example:
mask("Mask 1")
Return type: Mask.
Argument type: index is a Number.
After Effects finds the mask by its index in the Timeline panel, starting at 1 and counting from the top.
688