ios6 - MPMoviePlayerController load video from Photo library,play so fast -

// cameraviewcontroller.h

@interface cameraviewcontroller : uiviewcontroller{

uiimagepickercontroller *_picker; 

}

@property (strong, nonatomic) iboutlet uiimageview *imageview;

@property (nonatomic, retain) mpmovieplayercontroller *player;

• (ibaction)loadimage:(uibutton *)sender;

// cameraviewcontroller.m

@interface cameraviewcontroller ()

@property (strong, nonatomic) mpmovieplayercontroller *playview;

@end

@implementation cameraviewcontroller

@synthesize imageview = _imageview;

@synthesize player = _player;

@synthesize playview = _playview;

• (void)viewdidload

{

[super viewdidload];  _picker = [[uiimagepickercontroller alloc] init]; 

}

• (void)didreceivememorywarning

{

[super didreceivememorywarning]; 

}

• (ibaction)loadimage:(uibutton *)sender {

  _picker.delegate = self;

  _picker.sourcetype = uiimagepickercontrollersourcetypephotolibrary;

  nsarray *mediatypes = [nsarray arraywithobjects:(nsstring *)kuttypeimage, (nsstring *)kuttypemovie, nil];

  _picker.mediatypes = mediatypes;

  [self presentviewcontroller:_picker animated:yes completion:null];

}

pragma mark -imagepicker delegate

• (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info {

  uiimage *image = nil;

  nsurl *imageurl = nil;

  imageurl = [info valueforkey:uiimagepickercontrollermediaurl];

  if (imageurl == nil) {

  image = [info valueforkey:uiimagepickercontrollereditedimage];  if (image == nil) {      image = [info valueforkey:uiimagepickercontrolleroriginalimage];      _imageview.image = image;  }  else {  } 

  }

  else {

  self.player = [[mpmovieplayercontroller alloc] initwithcontenturl:imageurl];

      [[nsnotificationcenter defaultcenter] addobserver:self selector:@selector(moviefinishedcallback:) name:mpmovieplayerplaybackdidfinishnotification object:self.player];      self.player.view.frame = cgrectmake(10.0, 10.0, 200.0, 200.0);      self.player.view.backgroundcolor = [uicolor clearcolor];      self.player.moviesourcetype = mpmoviesourcetypefile;      [self.player preparetoplay];      [self.view addsubview:self.player.view];      [self.player play]; 

  }

  [picker dismissviewcontrolleranimated:yes completion:null];

}

• (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker {

  [picker dismissviewcontrolleranimated:yes completion:null];

}

pragma mark - user define

• (void)moviefinishedcallback:(nsnotification *)notification {

  mpmovieplayerviewcontroller *player = [notification object];

  [[nsnotificationcenter defaultcenter] removeobserver:self name:mpmovieplayerplaybackdidfinishnotification object:player];

  [player.view removefromsuperview];

}

the moviefinishedcallback:method called immediately,so video can not play completely.

how resolve it?

apple suggests：

uses avplayer play videos ipod library, camera roll, or via itunes file sharing.