ios - Playing MPMoviePlayerController in UITableViewCell causes app to freeze and crash -

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in app working with, adding mpmoveplayercontroller uitableviewcell , auto playing it. problem is, calling preparetoplay and/or play causes app freeze, cpu maxes out, ram continuously increases, , app of course crash after little while. if comment out preparetoplay , play not occur, see black box no playback controls.

we create mpmovieplayercontroller in cellforrowatindexpath , store array, may have multiple videos in table, , need able play right video upon tapping 1 or stop 1 on demand. when table loaded first time, videos load , play without issue. users can add video via modal view controller presentation, reload table after adding video data source. problem arrises after users add new video.

i tried storing property player in cell itself, did not resolve issue. i've tried calling stop before setting contenturl suggested elsewhere, didn't help. tried 4 different videos each different format, in case corrupt video. i'm not sure problem is.

//table view controller: @interface {     nsmutablearray *arrayofmovieplayers; }  viewdidload {     arrayofmovieplayers = [nsmutablearray new]; }  cellforrowatindexpath {     mytableviewcell* cell = [tableview dequeuereusablecellwithidentifier:@"cell"];      mpmovieplayercontroller *movieplayer = [[mpmovieplayercontroller alloc]init];     [arrayofmovieplayers addobject:movieplayer];      cell = [[mytableviewcell alloc]initwithstyle:uitableviewcellstyledefault reuseidentifier:@"cell" withdictionary:dict withmovieplayer:movieplayer];     return cell; }  //cell subclass: -(instancetype)initwithstyle:(uitableviewcellstyle)style reuseidentifier:(nsstring *)reuseidentifier withdictionary:(nsdictionary*)dict withmovieplayer:(mpmovieplayer *)movieplayer {     self = [super initwithstyle:style reuseidentifier:reuseidentifier];     if (self) {         movieplayer.view.frame = self.contentview.bounds;         [self.contentview addsubview:movieplayer.view];          dispatch_queue_t queue = dispatch_get_global_queue(dispatch_queue_priority_high, 0ul);             dispatch_async(queue, ^{                 nsstring* fileurl = dict[@"video"][@"url"]; //may remote or local                 dispatch_async(dispatch_get_main_queue(), ^{                     [movieplayer stop];                     [movieplayer setcontenturl:[nsurl fileurlwithpath:fileurl]];                      //next lines cause high cpu, ram, eventual crash                     [movieplayer preparetoplay];                     [movieplayer play];                 });              });     }     return self; }

some details of crash:

crashed thread:        0  dispatch queue: com.apple.main-thread exception type:        exc_bad_access (sigsegv) exception codes:       kern_protection_failure @ 0x00007fff5291bd80

the issue due invalid url video file. while url existed, not correct.


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