Amazon S3 hosted ideos won't play on iOS & Android after I change S3 permissions

I’m using the default video player that comes with OptimizePress 2 and it is Flowplayer. My Amazon S3 hosted videos play on all desktop and laptop browsers AND iOS and Android devices (GOOD!). However, when I change the permissions so the videos play on my site ONLY and so they can not be downloaded then they will no longer play on iOS and Android. (At that point the video player turns into a grey rectangle and while the page loads on my laptop, you can briefly see this message: “No video with supported format and MIME type found.” Again, that is when it loads on my LAPTOP. That message does not appear when the page loads on iOS and Android.)

These S3 permissions restrict the video to playing on my site only and you can’t download the file, which is what I want, but then the video will NOT play on iOS and Android devices, which is not what I want…

S3 BUCKET POLICY PERMISSIONS:
Grantee: Me – Open/Download – View Permissions – Edit Permissions (all boxes checked)
S3 INDIVIDUAL VIDEO FILE PERMISSIONS:
Same as above

If I change the individual video file permissions to the ones below then the video will play on iOS and Android but that also means it can play on other websites and can be downloaded (which is what I don’t want).

Grantee: Me – Open/Download – View Permissions – Edit Permissions (all boxes checked)
Grantee: Everyone – Open/Download (one box checked)

Then, using the permissions shown above, I created a bucket policy (with Amazons own code) that’s supposed to restrict the videos to playing on my site only but it doesn’t do anything differently than the first permissions above can do without the bucket policy in that the videos won’t play on iOS and Android.

Does anyone know how I can get the default Flowplayer that comes with Optimizepress 2 to play videos on my site ONLY on desktop and laptop browsers, plus iOS and Android – and will NOT allow downloading? I asked the people at Optimizepress and they don’t know.

Thank you.