For the non-engineers in the room (or the non-Sam’s trying to explain modern tech to a Victorian ghost): OpenH264 is a video codec developed by Cisco. It is an open-source implementation of H.264/AVC (Advanced Video Coding). The "Open" part means it’s free to use, royalty-free, and incredibly lightweight.
Hetty takes charge of a guest list she isn't even part of, hiring Thorfinn as "muscle" to keep Trevor away. ghosts s01e04 openh264