How Video Delay works, step by step

Walkthrough steps

1. Step 1 of 8

   Prop up the phone where it can see the whole rep

   Lean your iPhone or iPad against a bag, a fence or a tripod, outside the path of people, balls and equipment. Leave room around the edges so the whole movement stays in frame.

   For golf, try behind you (down the line) or facing you at about hip height. Open Video Delay, allow camera access and choose the front or back camera. Keep the phone in the same spot so you're comparing like with like.

   More detail: hands-free practice setup.

2. 12

   Step 2 of 8

   Pick a delay, do the rep, then look up

   Choose a delay from 1 to 60 seconds: half-second steps up to 10 seconds, then whole seconds. Pick enough time to finish the movement and turn toward the screen. Let the delay fill, then do a test rep.

   The big picture is the delayed replay. In this screen it's 3 seconds behind, so it still shows the backswing. The small Live window shows what the camera sees now, here the follow-through. The replay keeps running, so there's no record button to press between reps.

   Starting points: golf or a batting tee 5–8 s, a lift 10–20 s, a dance combination 15–30 s.

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   Step 3 of 8

   See live and delayed side by side

   Turn on split view to stack the live camera above the delayed replay. It's handy while you're framing the shot, or when a coach wants to watch the next rep and the last one at once.

   Other camera controls work the same way here: the 0.5× and telephoto lenses on iPhones that have them, pinch to zoom, tap to focus and a mirror option. The fps badge shows the capture rate. 30, 60, 120 or 240 fps is available where your camera supports it.

4. Step 4 of 8 · optional

   Put the replay on a TV

   For a bigger screen, use AirPlay screen mirroring or a compatible HDMI adapter. The TV shows the delayed replay full screen, with your drawings, while the controls stay on your phone.

   AirPlay needs both devices on the same Wi‑Fi, and it can add some lag of its own. Do a test rep on the actual TV and adjust the delay. Shared gym Wi‑Fi sometimes blocks AirPlay. A wired adapter avoids that.

   Step-by-step connection and troubleshooting: iPhone, iPad and TV setup guide.

5. 1

   Step 5 of 8

   Tap Save rep to keep the one you just watched

   Nothing is kept unless you ask. When a replay is worth another look, tap Save rep right away. It keeps the last 5, 10, 15 or 30 seconds, depending on the length you picked in Settings.

   The camera delay and the saved length are separate settings. A 60-second delay doesn't give you a 60-second clip, so save soon after the rep plays. To keep a copy in Photos as well, turn on Also save reps to Photos in Settings.

   More detail: Save rep, slow motion and Photos copies.

6. 1

   Step 6 of 8

   Open it from your saved reps

   Saved reps are kept in the app, newest first, with their length and the time you saved them. Open the library from the camera screen and tap a rep to review it. Check that you kept the moment you meant to.

   The other reps on this screen came from the same Simulator session, which also used sample images of tennis and squats.

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   Step 7 of 8

   Slow it down and step frame by frame

   Play the saved rep at 1×, ½×, ¼× or ⅛×. Drag the scrubber, or use the frame-step buttons to stop on the exact frame you want to check.

   Slow playback can't add frames the camera didn't capture. Higher capture rates help with fast movement, but they depend on the device, lens and lighting.

8. 12

   Step 8 of 8

   Draw lines, angles and circles

   Tap the pencil, then drag to draw a line, an angle or a circle. Drag the dots to adjust it. Lines show their angle, and drawings stay in place for your next session, so a reference line still lines up if the phone hasn't moved.

   These are lines you place by hand. They aren't automatic measurements, a form score or coaching advice.