When did you last talk to your grandmother?
If you need to speak to camera, remember three things.
Know who you’re talking to and tailor your message to them.
Q: Are you targeting a professor, or your grandmother?
Speak in English, not Jargon’ish.
Q: Can you drop the terminology and talk in plain terms your grandmother can understand?
Tell a story, don’t deliver a lecture.
Q: What’s going to keep your grandmother’s attention? A “here’s how it operates…”, or a “here’s how it solved a customer’s problem…” video?
...and before you start speaking to camera, say "Hi" to your grandmother.