App Preview

I am trying to upload an App Preview to App Store Connect for a iphone app,I created the preview as an "App Preview". When I try to upload the app preview I get the message " your app preview is too big". The preview is 30 sec. It is 6 MB in size. MP4 format. Who know how to change my app preview

I am facing the same issue. 1st preview of 8 mb got upload and processed successfully, but after that the other 2 of 4mb and 6mb are not.

App Preview
 
 
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