Videos not playing in SharePoint Site using IOS device

Hi All,

There is a site collection uploaded with some video file which is working fine and playing the video fine on IOS device.

But the same video is not playing in other site collection, we have tried to back up the site and create a new site collection using the same backup file, getting the same issue. Also tried to create new site collection under the same web application and uploading video getting the same issue.

Since we were not able to see the exact issue on IOS device.

Kindly suggest us the Possible issue reasons.

Thanks