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

elapsedSeconds

The number of seconds spent rendering this item.Integer, or null if item has not been rendered; read-only.

duration

The markerメs duration, in seconds. The duration appears in the Timeline panel as a short bar extending from the marker location.Floating point; read/write.

frameDuration

The duration of a frame, in seconds. This is the inverse of the frameRate value frames-per-second .Floating-point; read/write.

timeSpanDuration

The duration in seconds of the composition to be rendered. The duration is determined by subtracting the start time from the end time. Setting this value is

activeAtTime()

Returns true if this layer will be active at the specified time. To return true, the layer must be enabled, no otherlayer may be soloing unless this layer i

workAreaDuration

The duration of the work area in seconds. This is the difference of the start-point and end-point times of the Composition work area.Floating-point; read/wr

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.