id

A unique and persistent identification number used internally to identify an item between sessions. The value of the ID remains the same when the project is

stretch

The layerメs time stretch, expressed as a percentage. A value of 100 means no stretch. Values between 0 and 1 are set to 1, and values between -1 and 0 not i

frameRate

The frame rate of the AVItem, in frames-per-second. This is the reciprocal of the frameDuration. When set, the reciprocal is automatically set as a new fram

hasTrackMatte

True if the layer in front of this layer is being used as a track matte on this layer. When true, this layer’s track -MatteType value controls how the matte

file

The ExtendScript File object for the file that defines this asset. To change the value:ユ If this FileSource is a proxySource of an AVItem, call setProxy ors

maxValue

The maximum permitted value of the named property. If the hasMax attribute is false, an exception occurs, and an error is generated.Floating-point value; re

keySpatialAutoBezier()

Returns true if the specified keyframe has spatial auto-Bezier interpolation. This type of interpolation affectsthis keyframe only if keySpatialContinuous k

name

The display name of the property. Compare PropertyBase matchName attribute . It is an error to set the name value if the property is not a child of an index

featherRelSegLocs

An array containing each feather pointメs relative position, from 0 to 1, on its mask path segment section of the mask path between vertices, numbered starti

tracking

The text layerメs spacing between characters.NOTE: If the text layer has different tracking settings for each character, this attribute returns the setting f