Lets do something nice and answer myself. How to achieve this? Tracks from top to bottom: - VIDEO transparent CGI animation, no extra chroma key layers - VIDEO transitioning FROM (Overlay Mode > PorterDuff > DstAtop) - VIDEO transitioning TO (Overlay Mode > PorterDuff > SrcAtop) - VIDEO mask layer (what to enable will be white) Now there is a bug, once a transition to black is added to the transitioning TO video layer, the video will black out at some point. And obviously to celebrate our working website and git repo a tutorial on YouTube! https://youtu.be/RCZuS4gy4BE Op 16-11-2025 om 6:12 p.m. schreef Stefan de Konink:
I want to achieve the following animation:
- Track 1: the CGI animation, it has transparency and a chroma layer - Track 2: Video the animation runs over - Track 3: the CGI animation transitions to
Track 1 + 2 = the default operation, this works when stacking the animation on top of the video.
But *without rendering twice*, how am I able to mask out the chroma key in the animation, so track 3 becomes visible under it?
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-- Stefan