Precomp Layer Type
A Precomps is a container for a set of layers that are grouped and are adjusted by the properties that govern the precomp. It has four properties specific to the layer type (width, height, time remap, refId) and others shared with other layer types (transform, masks, effects, layer styles).
| Definition | Name | Type | Required | Default |
|---|---|---|---|---|
| Type | ty | Layer Types | ✅ | 0 |
| Width | w | Number | ✅ | |
| Height | h | Number | ✅ | |
| Time Remap | tm | Multi Dimensional Animated Property | ✅ | |
| Asset Reference | refId | String | ✅ | |
| Index | ind | Number | ✅ | |
| Transform | ks | Object | ✅ | |
| Parent | parent | Number | ➖ | |
| In Point | ip | Number | ➖ | |
| Out Point | op | Number | ➖ | |
| Start Point | st | Number | ➖ | |
| Time stretch | sr | Number | ➖ | 1 |
| Masks | masksProperties | Array[Mask Elements] | ➖ | |
| Track Matte Masked Layer | tt | Matte Mask types | ➖ | |
| Track Matte Masking Layer | td | Number | ➖ | |
| Track Matte Masking Layer Index | tp | Number | ➖ | |
| Blend Mode | bm | Blend Mode types | ➖ |
Type Property
Width
Width defines the width of the surface that has to be rendered from the precomp. Whatever is outside that area won’t be visible even if it is within the visible area of the precomp container. It basically works as the width of a clipping mask of the inner layers.
Height
Height defines the height of the surface that has to be rendered from the precomp. Whatever is outside that area will not be visible even if it is within the visible area of the precomp container. It basically works as the height of a clipping mask of the inner layers.
Time Remap
Time remap allows control of the timeline of a precomp independently from the main timeline. It is expressed in seconds and since it is animatable, it can support any amount of keyframes, easing and expressions.
Asset Reference
The refId property points to an object on the assets list that completes the composition information.