I went on a Google search for prior case law, because this piqued my interest. Everything I can find says that they are not required to disclose evidence, with the exception of 1) things they intend to use in court 2) physical evidence. The BAR seems to agree [1], there is no mention of disclosing evidence other than what you intend to present in court. [2] also notes that being required to disclose physical evidence is in contrast to the 5th amendment, which indicates to me that most evidence is not required to be disclosed under the 5th amendment.
I am unsure about the status of a video as "physical evidence". My assumption would be that a VHS tape is physical evidence, but an mp4 attachment to an email is not.
As an example, if a client gives his lawyer a murder weapon, the defense has to disclose that. If the client tells his lawyer where the murder weapon is buried, the lawyer is not required to disclose that [2].
I am unsure about the status of a video as "physical evidence". My assumption would be that a VHS tape is physical evidence, but an mp4 attachment to an email is not.
As an example, if a client gives his lawyer a murder weapon, the defense has to disclose that. If the client tells his lawyer where the murder weapon is buried, the lawyer is not required to disclose that [2].
[1] https://www.americanbar.org/groups/criminal_justice/publicat...
[2] https://scholarship.law.unc.edu/cgi/viewcontent.cgi?referer=... page 5 (page 900 if you go by the numbers on the text).