What tools does Meredith Masony recommend for editing pixelated video clips?

Based on what is available, there is not a specific list of editing tools recommended for fixing pixelated clips. In one video description, there is actually a request for help figuring out how to fix that issue in editing, not advice being given.

If you tell me what you are editing on (phone, Mac, PC, which app), I can walk you through concrete ways to reduce pixelation.

What device and editing program are you using right now?