Can I sue an ex landlord for recording me on video/audio without my consent and what is the statute of limitations?

If you are speaking about California, it is a two party consent state only for the recording of conversations that the other party has a reasonable expectation of privacy for. You do not state were you were when the landlord recorded you. If you were outside your unit, there normally would be no expectation of privacy. If you were inside your unit and the landlord was outside peeping in, you probably would have a case, but what were your damages? Having your privacy violated does establish a basis for damages, but is it worth the time and effort, and attorney fees and filing costs, to sue? The statute of limitations would start when you knew or reasonably should have known of the violation; I am unsure if it would be a one or two year statute of limitations.

If the recording was made in public, where you have no privacy expectation, you have no right to sue.