Render Sequence

Render Sequences in the Viz Engine Render Pipeline only distinguish themselves from each other on how the scenes key signal gets generated by default, when the lens distortion gets applied and on which assets (Background and Foreground). In general, compositing is done using an alpha blend operation using the key signal between all stages at the very end of the rendering pipeline. The only exceptions are the Precision Keyer and the External AR sequence, which implements their own blending on the Foreground asset.

Precision Keyer

When an asset is being put in the Foreground and the Precision Keyer is activated on it, the keying is executed. The chosen Render Sequence does not matter. The Precision Keyer compositing is different than the linear keying. Graphics that have a key are rendered on top, graphics without are rendered behind the Foreground asset.

Matte Scene

The Matte Scene is supported in all sequences except the Passthrough one. When a Matte Scene is used, the key signal that gets generated is a combination of the scene key, the trash matte and holdout matte values.

Overview