Notwithstanding any other provision of law, in any proceeding under this chapter in which a party or witness is incarcerated or when otherwise authorized by the court, the court may, in its discretion, conduct any hearing using a telephonic communication system or an electronic audio and video communication system to provide for the appearance of any parties and witnesses. Any electronic audio and video communication system used to conduct such a hearing shall meet the standards set forth in subsection B of § 19.2-3.1.