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

time

The current time of the layer, expressed in composition time seconds .Floating-point value; read-only.

workAreaStart

The time when the Composition work area begins, in seconds.Floating-point; read/write.

outPoint

The out point of the layer, expressed in composition time seconds .Floating-point value in the range [-10800.0..10800.0] minus or plus three hours ; read/wr

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

inPoint

The in point of the layer, expressed in composition time seconds .Floating-point value in the range [-10800.0..10800.0] minus or plus three hours ; read/wri

importPlaceholder()

Creates and returns a new PlaceholderItem object and adds it to the projectメs items array. Same as the File > Import > Placeholder command.name A string con

startTime

The start time of the layer, expressed in composition time seconds .Floating-point value in the range [-10800.0..10800.0] minus or plus three hours ; read/w

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

duration

Returns the duration, in seconds, of the item. Still footage items have a duration of 0.ユ In a CompItem, the value is linked to the duration of the composit