Lots of people cover the basics; it's hard to improve on that.
I'd recommend finding an observation either from your own games or from the games of other players that you can expand on. For example, "I looked at my own games and I see a pattern of making mistake X in situation Y." Or "I looked at GM games in the following opening, and it seems to me that if Black gets the f-file they usually win."
If you can give your observation a catchy name it helps.
Thank you for asking a thought-provoking question, Abhay! People say that having the right question to explore is already giving you half the answer.
How about analyzing key moments/patterns from classical games (i.e., historical games that many strong players know and refer to for key ideas, yet games that remain outside of the view of most other tournament players)? I personally find it always illuminating to see how an idea in a modern game dates back to some known (but to most of us unknown) game from decades ago, featuring this same idea. There are numerous examples of this, and I'm very interested in this theme.
Plus, it's been wisely said that a human life isn't long enough to only learn from one's own mistakes -- it's important to learn how to learn from the mistakes (and successes) of others who've come before.
I'd love to see this theme explored further and with regularity in the NW Chess magazine, and I've recently proposed that exact idea to the editors. Having coverage in video (not only print) format will be a great additional asset, I think.
What are good topics to make chess videos about?