If you have a trespass warning and visit the place but are not arrested, can you be charged later from video evidence or a credit card transaction?
Yes, you can be charged later.
Generally speaking crimes like trespassing have a statute of limitations that is in the months or years or duration, and charges can be pressed resulting in an arrest at any time within the statute of limitations.
Usually people are not arrested later on because it is hard to prove beyond a reasonable doubt that the crime took place, but there is no hard and fast requirement that an arrest for trespassing happen while the crime is being committed.
Also, usually only law enforcement officers are allowed to arrest people after the fact for crimes - citizen's arrests are usually only allowed when someone is in the process of committing a crime.