How to anti alias my animations?

I create my animations in CSP with aliased lines and shading since they're easier to work with and edit. But what options do I have to anti alias everything at the end? I'm aware there is a smoothing filter but it requires having to merge everything to avoid gaps between linework and colours, and also it takes a huge amount of time which just isn't feasible in projects

I do not have After Effects and OLM tools. I use DaVinci for compositing but there's no filter that quite has the same effect as anti aliasing with OLM or CSP's smoothing filter. With blurs you can still make out the jagged pixels.

Any suggestions?