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How to prepare an App Store preview video
App Store preview videos are not just normal screen recordings. Apple has rules for length, format, frame rate, and the exact pixel dimensions App Store Connect accepts.
The short version: make the video 15 to 30 seconds, export at 30 frames per second or less, and choose one of Apple's accepted preview sizes for the device family you are targeting.
FrameOS is built around that workflow: import a recording, trim it, mute unwanted audio, pick an App Store preview size, and export a video that is ready to upload.
The Core Rules
According to Apple's App Store Connect Help, app previews have these requirements:
- Length: minimum 15 seconds, maximum 30 seconds
- File size: up to 500MB
- Frame rate: up to 30fps
- Orientation: portrait or landscape for iPhone and iPad previews
- H.264 exports: .mov, .m4v, or .mp4
- ProRes 422 HQ exports: .mov
Apple also says each localization can have up to three app previews, and each preview can be up to 30 seconds long.
Accepted iPhone Preview Sizes
These are the iPhone preview dimensions Apple lists for App Store Connect.
| Device group | Portrait | Landscape |
|---|---|---|
| 6.9-, 6.5-, 6.3-, and 6.1-inch displays | 886 x 1920px | 1920 x 886px |
| 5.5-inch displays | 1080 x 1920px | 1920 x 1080px |
| 4.7-inch displays | 750 x 1334px | 1334 x 750px |
| 4-inch displays | 1080 x 1920px | 1920 x 1080px |
Apple notes that 3.5-inch iPhone displays do not support app previews.
Accepted iPad Preview Sizes
For iPad, Apple lists these accepted sizes:
| Device group | Portrait | Landscape |
|---|---|---|
| 13-, 11-, and 10.5-inch displays | 1200 x 1600px | 1600 x 1200px |
| 12.9-inch displays | 1200 x 1600px or 900 x 1200px | 1600 x 1200px or 1200 x 900px |
| 9.7-inch displays | 900 x 1200px | 1200 x 900px |
A Simple Workflow
- Import your screen recording.
- Choose the device family you want to target.
- Pick one of Apple's accepted preview sizes.
- Trim the recording to 15-30 seconds.
- Mute audio if it does not help the preview.
- Export the finished video and upload it in App Store Connect.
Practical Notes
Pick the size first. If you edit the video at the wrong aspect ratio and resize at the end, text and UI can look soft or awkward. It is cleaner to choose the target canvas first, fit the source recording inside it, and pad the remaining space.
Keep the first few seconds clear. Apple's app preview guidance says previews autoplay on the product page and in search results, so the opening moment should show the app's actual value quickly.
If your app supports multiple device families, export the preview size that matches the App Store slot you are filling. App Store Connect can scale some previews for nearby device sizes, but the safest reference point is still Apple's accepted resolution list.