Reroute

The Reroute plugin12 enables you to selectively transfer the Alpha channel or the Components (RGB or YUV) or both from a source track to a target track, partially overwriting the target's contents.

Target Track:
you can choose between Top and Bottom.
Operation:
you can choose between Replace Target (component + alpha channels); Components Only (color channels only) and Alpha Replace (alpha channel only)

It works as a shared plugin. The typical usage scenario is to build up a possibly animated Mask in one track and then to transfer the Alpha channel to another target track.



Footnotes

... plugin12
By Hermann Vosseler
The CINELERRA-GG Community, 2021
https://www.cinelerra-gg.org