How to Make a Reaction Video with Your Face and What You're Watching

TL;DR

Make reaction videos by recording both cameras at once: your face on the front camera and what you're reacting to on the back, composed into a single picture-in-picture clip with no editing.

Steps

Open DualCam and point the back camera at what you’re reacting to.
Size your face window a bit larger — in a reaction, your expression is the star.
Start recording and react naturally.
Preview to check both your face and the subject read well.
Save the composed reaction clip to your Photo Library.

Why this works

A reaction video is nothing without the face — but the thing being reacted to has to be visible too. DualCam captures both at once, so your genuine, unedited reaction lands next to whatever prompted it. Because it’s composed live, there’s no syncing a face-cam over a separate recording afterward.

Tips & edge cases

Face window larger than a vlog — reactions live on expression.
Reacting to something physical (unboxing, tasting, a view)? The back camera has it covered with no screen recorder needed.
Keep your face lit so your expression reads clearly.

FAQ

How do I balance my face and the thing I’m reacting to? Give your face a more prominent window for reactions — your expression is the point — while the back camera captures what you’re watching.

Do I need a separate screen recorder? For reacting to something physical in front of you, no — the back camera captures it live alongside your face.

Is it ready to post right away? Yes. Both cameras are composed as you record, so the reaction clip is shareable the moment you save.