So I have this digital desk phone with round buttons that have to light both in a steady fashion (line active) and blinking (line busy).
I really looked into hooking up the phone with some CISCO test utility on a laptop and decided even if I could, managing the practical effect and timing it with the actor offstage is a lot of work on set.
So, given I have a steady camera shot (no tracking/roto needed) how can I make these buttons flash and glow in post? I've read some of the blinking light tutorials on 3d models, but this is a phone with close-ups. There may be angled shots, not just face-on shots...surely a complication. And yes, hands over phone, clean plates needed for same angle of phone. I get all that.
Just what WOULD be the best technique in post with HitFilm? I'm thinking after you folks tell me, I'll want to back to the practical on-set controller!