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I'm trying to create an App Preview for my ios app in App Store Connect. I'm targeting 6.5" displays.
I successfully created the .mov file using QuickTime, recording my app activity on my iPhone XR. However, when I uploaded the file to App Store Connect, it said App preview dimensions should be: 1920x886, 886x1920.
According to Apple, the Accepted resolution is different than the Native resolution (see image below).
How can I create an App Preview if the native size isn't the correct size? Is there a way to use QuickTime or iMovie to either edit or record the right size?
Also, I'm not using Xcode as this is a phonegap project.
Thanks for your help!
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Click on the app you would like to update. Click New Version. Enter your app's Version Number.
The Basics: The app preview demonstrates the features, functionality, and user interface of your new app that users can watch right on your product page. Each preview is limited to a max of 30 seconds and is displayed as the first image alongside your app screenshots.
You are allowed to have up to 3 videos. The video autoplays in mute in the search results. The preview has to be between 15 and 30 seconds in length. You would have to create a piece in two different resolutions (three, if you want the video to be shown to iPad users).
It happened to me as well and I needed to change the format with ffmpeg from .mov to .mp4 in order for the video to be accepted by the App Store Connect.
This command line did the job:
ffmpeg -i input.mov -acodec copy -crf 12 -vf scale=886:1920,setsar=1:1 output.mp4
You will need to resize the video. Record it first on the targeted device in full resolution. After that you can resize it with tools like iMovie, AfterEffects, ffmpeg or similar.
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