ios - How to tell if Airplay streaming failed? -

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i'm working on video content app features both live stream , vod ads. drm reasons need use different streams when playing vod on device / streaming on airplay. when switch , try start streaming airplay new avplayer , every apple tv display message:

an error occurred loading content.

i'm observing avplayer status through kvo, doesn't seem change status 'avplayerstatusfailed' when happens, don't know when close video playback or start retry logic.

do notification this?


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