How to film an unboxing video with both iPhone cameras
An unboxing is a reaction video with a slower build: a box, a layer of tape and packaging to get through, and then the thing itself, with your face reacting to each part of it along the way. Recording the front and back camera at once puts the package and your face into one file from the moment the box lands in frame, so there is no separate demo shot filmed afterwards and no reaction re-created from memory of how it actually felt.
The general setup for simultaneous recording — layout, the settings that lock once you start, how much storage and heat a long take costs — is covered elsewhere. This page is about what is specific to opening a box: framing something that sits flat on a table instead of turning in your hand, when to let the reveal itself be a live camera swap, and keeping tape and cardboard noise out of the one microphone doing the job.
Set the stage before the box comes into frame
Mount the phone before your hands are full
The moment that ruins the most unboxing takes is the one where a hand that should be peeling tape is instead holding the phone. Get the phone on a stand, a stack of books, or leaning against something solid before the box ever reaches the table, the same way you would for any reaction shot — once your hands are busy with tape and cardboard, there is no good moment to reach back for the camera.
Put the package where the frame already expects it
Decide where the box goes before you press record, not after. If the back camera is filling the frame with a picture-in-picture face in one corner, leave the opposite corner or the centre of the lower frame clear for the box — moving it into position after recording starts means fighting your own layout for the first ten seconds.
Use the countdown so the first moment is not you sitting down
DualCam’s countdown runs off, 3, 5 or 10 seconds. Ten is usually the right choice for an unboxing: enough time to get back to your seat, pull the box into frame, and settle before the part anyone actually wants to watch — the tape coming off — begins.
Picture-in-picture beats a left/right split here
A box is wide, flat, and usually covered in text and branding along its edges — a shipping label, a logo, a barcode — which makes it a bad fit for the one layout that costs the most at the edges. A left-and-right split crops roughly a quarter off each side of both source frames to fit a vertical canvas, and that missing quarter is exactly where a box’s label or logo tends to sit when it is centred on a table.
Picture-in-picture with the back camera filling the frame avoids that crop entirely, and a top-and-bottom split is the safer choice if you want a split at all — it keeps the full width of both frames, at the cost of half the height each. Either way, a box being a static, table-bound subject rather than something you tilt and rotate in your hand, the way it might later in a product review, makes framing it once at the start reliable for the whole take.
Let the reveal be a live camera swap, not an edit
Picture-in-picture and split both let you choose which camera fills the main frame, and that choice can change while the camera is rolling — the file follows the swap immediately, because the preview and the recording are the same rendered frame. For most of an unboxing the box is the main event and your face rides in the corner. At the actual reveal, the moment the item comes out of the box, swapping so your face fills the frame and the box becomes the small window can read better than holding the same layout through the whole thing, because that is the one moment your reaction is genuinely the story.
This only works if you decide it is coming — glance at the box, know roughly when the item is about to appear, and make the swap a beat before it happens rather than after. A layout change is instant once you make it; the only thing that is not instant is your own reaction time.
Tape and cardboard go straight into the one microphone you have
Dual camera recording writes a single audio track, taken from whatever room the phone is sitting in — not a clean feed isolated to your voice. An unboxing is unusually loud for that one microphone: tape peeling off a box, packaging crinkling, a box set down firmly on a table all compete with anything you are saying over them.
The habit worth building is not setting the box down on the same surface the phone is resting on. A box placed there travels straight through that surface into the microphone at the phone’s bottom edge, which is an easy thing to do by accident when both hands are occupied. A stand a little further along the table keeps that thump out of the track. When you get to reading a card, a manual or fine print inside the box, get the phone a few inches closer rather than raising your voice over the room — proximity does more than volume ever will.
A haul with more than one box is several takes, not one
A dual-camera recording runs continuously from record to stop with no way to pause it mid-file, which matters if the day’s mail brought more than one package. Rather than holding one long take through box after box, stop and start a fresh recording for each — the file for each unboxing is complete and usable on its own, and you are not stitching a multi-item haul back together afterwards to find the moment box three began.
Splitting a haul into separate takes also means each one is short, which helps with the two limits that matter for a long dual recording: storage, at roughly 75 MB per minute, and heat, since two live camera pipelines and a GPU composite running back to back for half an hour is real, cumulative load on the phone. A handful of two-minute takes gets through a stack of boxes far more reliably than one twenty-minute recording aimed at the whole pile.
Common follow-up questions
Should I use picture-in-picture or split screen for an unboxing?
Picture-in-picture with the back camera filling the frame is the safer default — it keeps the whole box in view without cropping. If you want a split, use top-and-bottom rather than left-and-right: the left-right split crops about a quarter off each side, which is usually where a box’s label or branding sits.
Can I switch which camera is the main view right as I pull the item out?
Yes. Which camera fills the frame can be swapped while the camera is rolling, and the recorded file follows immediately since the preview and the recording are the same frame. Swapping to your face at the reveal and back to the box afterwards is a live edit, not something you need to plan around.
Why does the tape and cardboard sound so loud in the video?
There is one microphone and it records the room, not an isolated feed of your voice. Setting a box down on the same surface the phone rests on sends that thump straight into the mic. Keep the stand off the surface you are actually using, and move the phone closer to you rather than raising your voice for anything you want to be heard clearly.
Want to just do this?
DualCam records the iPhone front and back cameras at the same time and writes one finished MP4 while you shoot. Free, no account, no ads, nothing leaves the phone.