ios - Crash in -[AVPlayerItem _attachToPlayer:] An AVPlayerItem cannot be associated with more than one instance of AVPlayer -

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i got crash affecting 10% of users, yet i'm unable reproduce it, , don't know when happens.

crashlytics reports half of crashing users having app not in focus, i.e. doing background audio or airplay. app plays hls video stream, , switches audio version when backgrounded.

any ideas what's wrong, or why there multiple avplayer instances singleton player class?

thanks!

exception type: nsinvalidargumentexception reason: avplayeritem cannot associated more 1 instance of avplayer fatal exception latest crash: 4/06/2013 @ 8:48:46 utc+0200 0   corefoundation  __exceptionpreprocess + 162 1   libobjc.a.dylib objc_exception_throw + 30 2   avfoundation    -[avplayeritem _attachtoplayer:] + 188 3   avfoundation    -[avplayer _attachitem:andperformoperation:withobject:] + 336 4   avfoundation    -[avplayer _insertitem:afteritem:] + 26 5   avfoundation    -[avqueueplayer insertitem:afteritem:] + 136 6   mediaplayer __block_global_4 + 520 7 ... libdispatch.dylib   _dispatch_call_block_and_release + 10 14

it seems solved explicitly stopping playing before setting new url, e.g.

[movieplayer stop]; movieplayer.moviesourcetype = mpmoviesourcetypestreaming; [movieplayer setcontenturl:[nsurl urlwithstring:[videos objectforkey:quality]]];

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