most of those creators aren't actually using fully AI generated video. it is mostly traditional green screen and compositing with some AI tools sprinkled in. you shoot yourself on a cheap green screen matching the movie's lighting, key it out in After Effects or Premiere, and then use color match to blend it. if you actually need face swapping, tools like ReActor inside Stable Diffusion work best for keeping it realistic. the real trick is matching the lighting and camera angle when you shoot, otherwise it looks cheap no matter what software you use. there are also some templates on CapCut that do the heavy lifting if you just want quick tiktok views, but for the high quality ones you need a proper editor.
