i think that adding bulge / spherize effect in Shotcut would be a nice idea, actually. especially for the warping effect in videos.
There is not a specific filter for this, but with manipulating a few of other filters you might get what you are looking for, if not it will be your own unique style nobody else is doing, lol.
Look here, and scroll down for the 2nd example.
This is just done with text, and I’m still experimenting with video, but these filter will warp your video, but you may not like the result. Getting what you want may require hours of experimenting.
i don’t think that this is what i looking for, sorry.
Can you post an example of what you want? If the Lens Correction filter isn’t enough, I’m not sure what you’re describing.