skipFrames

The number of frames to skip when rendering this item. Use this to do rendering tests that are faster than a full render.A value of 0 skip no frames, and re

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.

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

addSolid()

Creates a new SolidSource object, with values set as specified; sets the new SolidSource as the mainSource value of a new FootageItem object, and adds the F

addComp()

Creates a new composition. Creates and returns a new CompItem object and adds it to this collection.If the ItemCollection belongs to the project or the root

addNull()

Creates a new null layer and adds the AVLayer object to this collection. This is the same as choosing Layer > New > Null object.duration Optional, the lengt

add()

Creates a new AVLayer object containing the specified item, and adds it to this collection.The new layer honors the Create Layers at Composition Start Time

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

setProxyWithPlaceholder()

Creates a PlaceholderSource object with specified values, sets this as the value of the proxySource attribute, and sets useProxy to true. It does not preser

AVItem object

The AVItem object provides access to attributes and methods of audio/visual files imported into After Effects.ユ AVItem is a subclass of Item. All methods an