Exact resolutions, aspect ratios, length, and format for App Store preview videos in 2026, including the 6.9-inch and 6.5-inch requirements that trip up most submissions.
App Store Connect is unforgiving about preview video specs. Upload a file that is one pixel off the required resolution and it rejects the whole thing, usually with an error message that does not tell you which dimension is wrong. This guide collects the numbers that matter so you can export it right the first time.
Required display sizes
Apple groups devices by display size. As of 2026 the two that carry the most weight are the 6.9-inch class (the largest Pro Max phones) and the 6.5-inch class. A preview uploaded to the 6.9-inch slot is reused for smaller modern phones, which is why most teams produce it first.
- 6.9-inch display: 1320 × 2868 (portrait) or 2868 × 1320 (landscape).
- 6.5-inch display: 1242 × 2688 or 2688 × 1242.
- Older 5.5-inch display: 1080 × 1920, still accepted for legacy device support.
- iPad 12.9-inch / 13-inch: 2048 × 2732 for tablet listings.
The safest approach: record on a recent iPhone, then export at the exact 6.9-inch resolution. prevy targets these resolutions directly so you are not guessing or scaling a recording up and softening it.
Length, frame rate, and format
- Length: 15 to 30 seconds. Shorter than 15 is rejected; aim for the low end.
- Frame rate: 30 fps is standard. 60 fps is accepted and looks smoother for fast UI.
- Codec: H.264 or HEVC (HEVC gives smaller files at the same quality).
- Container: .mov or .mp4.
- Maximum file size: 500 MB.
- Audio: optional, and remember previews autoplay muted.
The poster frame
App Store Connect lets you pick the poster frame: the still shown before the preview plays. Treat it like a screenshot, because for many viewers that is exactly what it is. Choose a frame that shows your app at its best, not a transition or a half-loaded screen.
Common rejection reasons
- Wrong resolution: even being off by the status-bar height fails. Export at the exact target.
- Too short: under 15 seconds is the most frequent miss.
- Showing non-app content: pricing, other platforms, or a device frame inside the video itself can trigger review rejection.
- Including a physical device frame: the App Store renders previews inside its own UI, so a frame baked into the video looks doubled.
A reliable export checklist
- Record in portrait on a modern iPhone.
- Trim to 15–30 seconds.
- Remove the iOS recording dot and any personal data on screen.
- Export at 1320 × 2868 (6.9-inch) as H.264/HEVC.
- Pick a strong poster frame in App Store Connect.
- Upload and confirm it plays in the preview slot before submitting.
Specs change at the margins each year as Apple ships new hardware, but the discipline does not: hit the exact resolution, stay inside the length window, keep it clean. Do that and your preview clears review on the first try.
Written by
Sabrina Fraser
Product Designer & ASO Specialist
Sabrina designs the frames, motion, and typography that make a 15-second preview feel inevitable. She obsesses over the first three seconds and the last call to action.