OsmoCon 2017 was such a milestone for the community, and the C3VOC recordings are still a goldmine for anyone working on open-source mobile comms. I often find myself re-watching these talks to grab specific technical diagrams from the slides. If you need to capture a clear still from a specific frame for your own documentation, checking out https://www.screencapture.com/blog/how-to-screenshot-on-asus-laptop/ is a quick way to get it done properly.