How to Film a Hands-On Demo While Explaining It on Camera

TL;DR

Rear camera on the work, your face in a small bubble, a stand to keep both hands free, and macro mode for close detail. For slides, documents or web pages instead of a physical subject, use Demo Mode (Pro).

The problem

A demo without a presenter feels cold, and a talking head without the subject leaves viewers guessing what “this part here” means. Filming them separately and syncing them in an editor takes longer than the lesson itself. And when your hands are busy with the subject, you can’t hold a phone.

The setup

  1. Put the phone on a stand or tripod, with the rear camera pointing at the work.
  2. Choose a PiP layout with the rear camera as main and your face in a small corner bubble that doesn’t cover your hands. See moving the bubble.
  3. For small detail (labels, solder joints, handwriting), use the macro mode on the rear camera.
  4. Add a countdown so you can get your hands into position.
  5. Narrate as you work, to the front camera.

Showing a screen, slides or a page

DualCam records through its cameras, not other apps. For slides, a PDF, a video or a live web page, use Demo Mode (Pro): put the content behind you, keep one camera in the corner and scroll or zoom yourself while recording. See Demo Mode.

Tips

  • Light the work, not only your face.
  • Say what you’re about to do before doing it.
  • Check the preview for blocked views before you save.
  • Keep clips short. One recording stops at 10 minutes, and short clips are easier to review.

FAQ

What if the subject is small? Use the macro mode on the rear camera to focus up close.

Can I demonstrate something on a screen? Not by recording another app. Use Demo Mode (Pro) to put slides, a PDF, a video or a web page behind you.

How do I keep the phone steady? Use a stand or tripod and leave stabilization on Standard.

The app DualCam →