Device name: Motorola moto X (2nd gen)

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Operating system: 6.1

Steps to reproduce:
I have question regarding behavior of audio focus and WebView.

I’m developing SDK which is used to display ads. Inside SDK we use WebView which needs to display ad and to display device volume inside HTML ad. So we have sample application which uses WebView and loads HTML ad (with video inside which auto plays). After that we need to register audio volume change event on android device and report it back to ad (with media stream volume) which will display that data. 

Implementation is that we request audio focus (inside SDK) and only if app (SDK) has audio focus we are going to report volume change to ad. Problem is when HTML ad which has video inside of it is loaded and video starts, WebView takes audio focus away from our host app. Is there any workaround for this issue, and if there is what we can do to maintain audio focus on app side? During testing I saw that while video is playing, audio focus is away from our sample app and returns after video finishes.

If you answer me ASAP it would be great.

Thanks in advance!