Created by Kenneth Robinson, last modified on Sep 30, 2026

The following charts illustrate the gop structures for AV1 spatial scalability, enabled by spatialLayers (and optional spatialLayersRefBaseLayer) parameters

2 spatial layers (spatialLayers=2)

A diagram of a diagram Description automatically generated

3 spatial layers (spatialLayers=3)

A diagram of a computer program Description automatically generated with medium confidence

4 spatial layers (spatialLayers=4)

A diagram of a computer program Description automatically generated with medium confidence

3 spatial layers, with each EL referencing BL (spatialLayers=3, spatialLayersRefBaseLayer=1)

A diagram of a computer program AI-generated content may be incorrect.

4 spatial layers, with each EL referencing BL (spatialLayers=4, spatialLayersRefBaseLayer=1)

A diagram of a computer AI-generated content may be incorrect.