How to film a dance practice video with both iPhone cameras
Practicing a routine usually means watching two different things afterwards: your body, full length, to see whether the shape is right, and your face, to see whether you are actually landing the counts instead of just guessing at them. A dual-camera recording puts both in one file at the moment you dance, instead of two separate clips you would otherwise have to line up by eye in an editor afterwards.
One thing it will not do is play a reference video for you to dance alongside inside the recording itself. DualCam composites two live camera feeds — whatever the front and back cameras are pointed at right now — not a pre-recorded clip layered in from somewhere else. If you are learning a routine from a video, that video needs its own screen or speaker in the room; the phone doing the recording is only ever looking at you.
Picture-in-picture beats split screen for a full-body check
A left-right split screen on the vertical canvas crops roughly a quarter of each source frame off the sides, and a top-bottom split halves the vertical room each camera gets. Both are workable for a conversation where people mostly stay put. Neither is workable for a routine with wide arm extensions or side-to-side travel, because the parts of your body that leave the centre of the frame are exactly the parts a split screen has the least room for.
Picture-in-picture avoids that trade entirely for the camera that matters most here. Set the back camera as the full frame so it keeps the whole canvas to work with, and let the front camera sit in the small inset for your face and your counts. Layout, the inset’s corner, its size and its shape can all be changed while you are recording, so if the inset ends up sitting over the exact spot you travel through, drag it to a corner that is out of your path instead of stopping the take.
Getting your whole body into a vertical frame
The back camera itself sees a normal 16:9 landscape image; the canvas it gets drawn into is a narrow vertical rectangle, either 1080×1920 or 1080×2340 to fill a modern screen edge to edge. Fitting head to floor into that shape takes more real distance from the phone than framing a face does, and it is easy to underestimate by a couple of steps when you are setting the mount up close and checking the preview from a chair.
Back the phone up further than feels necessary, mount it rather than leaning it against something that can shift mid-take, and set it roughly chest height so the frame is not looking sharply up or down at you. If the room will not give you the distance, the lens picker lets the back camera run ultra wide instead of the standard wide lens on iPhones that support it — more of you fits in at the same distance, at the cost of some stretch near the edges of the frame, so keep your travel toward the centre where you can.
Why the picture does not hold as steady as a single-camera clip
A multi-camera capture session is limited to a plainer stabilization mode than a single camera gets to use, because the format has to fit inside one shared hardware budget alongside the composite and the encode. Handheld footage shows this as more of your own motion making it into the frame than you are used to from a single-camera video on the same phone, and a picture-in-picture inset shows it more than the full frame does, since it is already a smaller, cropped sample of the source image before any shake is added.
For a routine, the movement in the shot is the whole point and cannot be filmed away — but the camera itself does not need to add to it. A mount that does not get bumped by footwork close to it removes the one source of shake that is actually avoidable, which matters more here than it does for a shot where the subject mostly stands still.
Running the routine one take at a time
A dual-camera recording has no pause button — once you press record it runs straight through to stop, so there is no way to freeze it between run-throughs and pick back up in the same file. That is not a gap worth fighting; it just means treating each attempt at the routine as its own take rather than one long recording with the routine repeated inside it.
DualCam keeps every take in its own library with a thumbnail, so this costs nothing in practice — run the routine, stop, run it again, and decide afterwards which attempt actually landed instead of judging in the moment. If music is playing from a speaker in the room while you dance, remember it lands in the same single audio track as your breathing and your counts; that is normal for a shared microphone and not something to fix mid-take.
Common follow-up questions
Can I dance alongside a reference video playing inside the recording?
No. DualCam composites two live camera feeds in real time; it does not overlay a pre-recorded clip. Play the reference on a separate screen or speaker in the room — the phone doing the recording is only looking at you.
Picture-in-picture or split screen for a full-body dance video?
Picture-in-picture, in most cases. A split screen crops roughly a quarter of each source frame off the sides or halves the vertical room per camera, which costs you exactly the parts of your body that travel furthest from centre. Picture-in-picture keeps the back camera’s full canvas for your body and tucks your face into a small inset.
Which lens fits my whole body in a small room?
Ultra wide, on iPhones where the lens picker offers it for the back camera. It lets more of you fit into frame at a shorter distance than the standard wide lens, at the cost of some stretch near the edges — useful to know since that is also where a split-screen crop would push you.
Can I keep more than one take without deleting between attempts?
Yes. Every take is saved into the app’s own library with a thumbnail, and nothing is deleted or overwritten automatically. Run through the routine as many times as you want and pick the one to save or share afterwards.
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.