title: Prevent WebView from obtaining audio focus when playing an HTML5 video
body: <p>I'm currently working on an app that plays videos, some native, some HTML5. For the native videos I use ExoPlayer to play the videos but some sources don't provide me with the raw video file so these must be played within a WebView as HTML5 videos. All videos begin playback with their audio muted and if the user unmutes the video I obtain audio focus. This works great with the ExoPlayer videos but the WebView obtains audio focus as soon as video playback begins. </p>
  
  <p>Is there any way to prevent this behavior and instead only obtain the audio focus when the video is unmuted? </p>