I am trying to stream videos in my application served from AWS Cloudfront. When I embed the URL in the video’s source tag I am able to view the video thumbnail when run on web. The video tag fetches the first frame of the video and sets it as the default thumbnail. But the same behavior is not obtained when I build the app and run on Android, iOS devices. It displays the default video players grey screen with a play icon. How do I debug this issue for devices? Is there any workaround for the same?