HaLeiVi: Because in those two cases the camera isn’t doing anything at the time you’re moving. You’re doing something that will be written later, but there is no Ma’aseh K’siva whatsoever because the instrument that’s doing the K’siva doesn’t exist yet. And your comparison is off by a little bit. It’s not having someone else write what you say, it’s like having a computer program set up to type out everything you say. Would you be okay with that?
By the way, I’m not 100% sure of my opinion that it’s real K’siva, so I’m perfectly okay with passing any Shailos about this on to someone reliable who I know is Meikel (e.g. any Talmid of Rav Schachter), but I do know that Rav Elyashiv agrees with me and it makes a lot of sense.