If you would like to export an alpha video in order to mask out other videos with external video editing tools, then please follow the steps below:
Prepare an iClone project. Remove the Sky and optionally remove the Terrain.
Go to Stage/2D Background, and in the Modify page, disable the Active box so that the background turns to a solid color.
Go to Export/Video, and in the Modify page, disable the Enable the Stereo Vision Output box.
Leave the other settings in default. For more information, please refer to the Exporting a Video section.
At the bottom of the Modify panel, enable the Export alpha video only box.
Click the Export button to export as an alpha video.
The exported alpha video can be imported into any video editing tool to create frame or special overlaying effects. We will use Adobe Premiere as an example in the following case.