It seems that ads (
DFPBannerView) that display a video will mute music from other apps.
In application:didFinishLaunchingWithOptions: I set the volume of all ads to 0:
GADMobileAds.sharedInstance().audioVideoManager.audioSessionIsApplicationManaged = true // GADAudioVideoManagerDelegate is not set / implemented - not sure if this line in necessary
GADMobileAds.sharedInstance().applicationMuted = true
When a video ad appears, it is muted, but the audio from other apps will still be interrupted / paused.
By default, the Mobile Ads SDK will set the audio session category to AVAudioSessionCategoryAmbient when playing ads muted. [...]
Is this a known issue, is it intended, or am I missing something?