iPhone / iPad

How to sync videos with different start times on iPhone or iPad

Compare recordings that begin at different times by matching a visible event in each clip, such as the start of a golf swing.

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This example uses two local golf recordings with Premium activated. Add Sync Point through More → Customize Home Bottom Buttons if its button is missing. Screenshots show the English interface on an iPhone 17 Pro simulator.

Open Sync groups from the bottom toolbar. Set a sync point in each video, check the pairing in Preview alignment, turn on Synchronized playback, and tap Apply.

Open the synchronization group

Load the clips in separate panes and open Sync groups. Work in the group containing the two recordings, and identify the same stage of the movement in both previews.

iPhone 17 Pro — The group shows a separate synchronization point for each clip.
The group shows a separate synchronization point for each clip.

Adjust each clip’s reference point

Use the −1 Frame and +1 Frame buttons under each preview to refine the points. In this example they are set to 2.108 seconds in Video 1 and 2.361 seconds in Video 2.

iPhone 17 Pro — The clips use different timestamps for corresponding action.
The clips use different timestamps for corresponding action.

Check the alignment in a preview

Tap Preview alignment to watch the clips around their points. Use the before-and-after ranges to include enough context, stop the preview, and adjust the points if the action still does not match.

iPhone 17 Pro — Preview alignment plays the selected clips together for a visual check.
Preview alignment plays the selected clips together for a visual check.

Enable synchronized playback

Enable Synchronized playback and tap Apply. The workspace displays numbered sync markers. Start one player and check that the other participates in synchronized playback.

iPhone 17 Pro — Synchronized playback is enabled before applying the group.
Synchronized playback is enabled before applying the group.

More possibilities

Useful details

Check these details as you follow the steps.

144preset layouts
36videos at once, up to
Make it yoursPosition, size and dividers

Choose the event yourself

The app does not infer which golf swing poses should match. Select corresponding moments in the source videos and use the preview to judge the result.

Linked controls are a separate setting

The ordinary Lock button links player controls. Synchronization also uses the reference points you set, so simultaneous Play alone does not align different recording starts.

Frequently asked questions

Must both sync points have the same timestamp?

No. Different timestamps are expected when recordings start at different times. The visible event is what should correspond.

Are checkpoints the same as sync points?

No. A checkpoint helps you revisit one video position; a sync point defines the reference used to coordinate clips.

Split Screen Player

Try this with your own media

Open Split Screen Player and follow the steps with files you want to use.

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