Hybrid does not support encoding to any format that support an alpha channel.
+ I never needed this, so I have no clue how I would even go at it.
Vapoursynth has support for alpha channels, but I have never really tried using them. So I got no idea how I would even do this.
Cu Selur
Ps.: When writing a script to combine two clips like you want, I would probably use animate and Overlay.
+ I never needed this, so I have no clue how I would even go at it.

Vapoursynth has support for alpha channels, but I have never really tried using them. So I got no idea how I would even do this.

Cu Selur
Ps.: When writing a script to combine two clips like you want, I would probably use animate and Overlay.
----
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.