sourceRectAtTime()

Retrieves the rectangle bounds of the layer at the specified time index, corrected for text or shape layer content.Use, for example, to write text that is p

source

The source AVItem for this layer. The value is null ina Text layer. UseAVLayer.replaceSource to change the value.AVItem object; read-only.

AVLayer object

The AVLayer object provides an interface to those layers that contain AVItem objects composition layers, footage layers, solid layers, text layers, and sou