How to Film a Demo While Explaining It on Camera

Steps

1. Point the back camera at the subject you’re demonstrating.
2. In DualCam, keep your face in a small corner window.
3. Position the window away from the subject and your hands.
4. Record while you show and explain at the same time.
5. Preview to confirm nothing’s blocked, then save.

Why this works

Good teaching shows and tells — a demo without a presenter feels cold, and a talking head without the subject leaves viewers guessing. DualCam captures both at once: the back camera on the work, your face in the corner adding the explanation, composed into one clip so the lesson holds together with no editing.

Tips & edge cases

• Keep the face window off your hands and the subject — corners are safest.
• Steady the phone on a stand so the demo stays in frame while you work.
• Explain as you go — the whole point is narration synced to what you’re showing.

FAQ

How do I show the subject and stay on camera? Point the back camera at what you’re demonstrating and keep your face in a small window, so viewers see both the demo and you.

Where should my face window go? Tuck it in a corner clear of the subject and your hands, so nothing important is covered.

Do I have to edit the two together? No. DualCam composes the picture-in-picture live, so the tutorial is ready to share when you save.