Alliance for OpenUSD · Schema

USDLayer

A USD layer — the fundamental unit of composition in OpenUSD, representing a file or in-memory container for scene description data including prim specs, property specs, and composition arcs.

3DInteroperabilityLinux FoundationMetaverseOpenUSDSpecificationStandardsUSDVisual Effects

Properties

Name	Type	Description
identifier	string	The unique identifier (path or URI) for this layer.
realPath	string	The resolved filesystem path for this layer.
fileFormat	string	The file format identifier for this layer.
defaultPrim	string	The default prim path to use when referencing this layer.
startTimeCode	number	The start time code for the layer's time-sampled data.
endTimeCode	number	The end time code for the layer's time-sampled data.
framesPerSecond	number	Frames per second for time code interpretation.
timeCodesPerSecond	number	Time codes per second (usually matches framesPerSecond).
metersPerUnit	number	Scene scale in meters per USD unit.
upAxis	string	The up axis convention for the scene.
documentation	string	Human-readable documentation for the layer.
subLayerPaths	array	Ordered list of sublayer paths composed by this layer.

View JSON Schema on GitHub