Separate RGB is a plugin from Rowbyte that works on the red, green and blue channels of an image separately. You can move, rotate, scale, blur, blend, fade and distort each channel independently inside After Effects and Premiere Pro.
The plugin includes a Lens Distortion control applied per channel for chromatic aberration, and it automatically grows boundaries. Compatibility reaches from After Effects CS6 through the 2025 release, and Premiere Pro from CS6 through the 2020 release.
The current version is 2.7.5, released on April 21, 2025, which fixed version mismatch errors. Earlier updates added MFR support in After Effects and Apple Silicon support for Premiere, along with several floating license server compatibility updates. Separate RGB is listed here as free, and a demo video is available.