How to correct purple fringing in a video?

Does anyone have any experience with fixing purple fringing from a cheap/badly focused camera lens?
There’s obviously no direct filter for this but I was thinking there could be a combination that works good enough to improve the clip. Thinking out loud, maybe selecting only the purple areas/channel then desaturating then dragging the shadows way down? Anyone know how to do this?

Here’s a random frame that has quite a lot of this purple fringing on all the dark edges to the brightbackground (there’s also at least a saturation and sharpening that make it a bit more visible).

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I always forget this filter exists, I think overall it does the job quite nicely. I need to tweak a bit the purple and its range and I’m done.
The alpha channel adjust and alpha channel view filters are also quite helpful.


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