Reaction videos
Reaction videos with the thing and your face in one take
The format is two pictures: what you are reacting to and you reacting. Front + Back records both at the same instant, over / under stacks them the way viewers expect on a vertical feed, and Both saves the finished video plus the clean files so a longer edit is a matter of choosing, not syncing.
How to film it
- Swipe to Front + Back and choose 9:16.
- Pick over / under. The scene on top, you below. Drag the seam to give the scene more or yourself more; it is written into the file.
- Set What to save to Both.
- Record. Tap the shutter for a still of the best moment; switch the light on if the room darkens; everything else stays locked so nothing changes by accident.
- Trim the ends in the editor and, on iOS 26, add captions for the feeds that autoplay muted.
What you get
The stacked reaction video ready to post, plus a clean scene file and a clean face file that line up in any editor. If the platform wants landscape, rebuild the same take side by side in the editor’s Layout tool; the original is never touched.
Tips
- Frame for the strip. Each half is a wide strip, so keep your face in the middle of the front camera’s picture, not at the top of the frame.
- Light your face, not the screen you are reacting to.
- Use the window layout instead when the scene matters more than the reaction; a circle in the corner reads as commentary at a glance.
Questions
Reactions, answered
Can I react to something on the phone itself?
No. The back camera films what is in front of the phone. To react to a screen, point the back camera at that screen.
Can I swap which picture is on top?
Yes. The swap control changes which camera is the main one, mid-take, and a Separate or Both take can be rebuilt either way afterwards.
The thing and your face. One take.
Dual Recorder: Dual Camera is coming to the App Store for iPhone.