iOS full-screen movie audio not playing

Target Platforms Mobile
1

iOS 7.1 on iPad, iOS9 on iPhone5, Unity 5.2.1p1, XCode 7. I load Handheld.PlayFullScreenMovie via a URL.

Handheld.PlayFullScreenMovie (url, Color.black, FullScreenMovieControlMode.Full);

The video plays just fine. There is no audio at all. Volume control is there, but no joy. This same movie plays fine via Safari when hitting the same URL. I saw this posting: ios - MPMoviePlayerController streaming video not play Audio on iPad - Stack Overflow and hand-edited the generated VideoPlayer.* files, without complaints, but no luck there either.

Is this a bug or feature? Am I the only one having this problem? Are there some hidden phone settings I should check (besides volume limit)? Is it a codec thing? If so, why does it work fine with other apps and not Unity?

2

Does the same movie play audio when loading it locally from the device?

So if you put a movie called mymoviefile.mp4 it in the StreamingAssets folder, and load it using…
Handheld.PlayFullScreenMovie (“mymoviefile.mp4”, Color.black, FullScreenMovieControlMode.Full);

If the audio still doesn’t work, its a codec or movie issue, as I can play MP4 files fine locally on iOS devices. I use Leawo Video Converter Ultimate to convert them.

If audio does work locally, then its definately a Unity bug and I would submit a new bug report with an attached simple repro project.