Objective-C如何在MPMoviePlayerController或AVPlayer上即时播放视频，而不会延迟？

Question

我试过在AVPlayer和MPMoviePlayerController上播放500KB的视频，它们都有一点恼人的延迟。AVPlayer和MPMoviePlayerController都会显示2-3秒的黑屏，然后开始播放视频。这真的很烦人，为什么视频花了这么长时间才开始？我怎么才能修复它？

 //Movie Player Code
_moviePlayerVC = [[MPMoviePlayerViewController alloc] initWithContentURL:video];
    _moviePlayerVC.moviePlayer.view.userInteractionEnabled = YES;
    _moviePlayerVC.moviePlayer.view.multipleTouchEnabled = YES;
    _moviePlayerVC.moviePlayer.repeatMode = MPMovieRepeatModeOne;
    _moviePlayerVC.moviePlayer.controlStyle = MPMovieControlStyleNone;
    _moviePlayerVC.moviePlayer.scalingMode = MPMovieScalingModeFill;
    _moviePlayerVC.moviePlayer.view.frame = self.frame;
    [_moviePlayerVC.moviePlayer setShouldAutoplay:YES];
    _moviePlayerVC.view.frame = self.frame;

    [self addSubview:_moviePlayerVC.view];

//AVPlayer Code
AVAsset *asset = [AVAsset assetWithURL:video];
    AVPlayerItem *item = [[AVPlayerItem alloc] initWithAsset:asset];
    _player = [[AVPlayer alloc] initWithPlayerItem:item];
    _player.actionAtItemEnd = AVPlayerActionAtItemEndNone;
    AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:_player];
    layer.frame = self.frame;
    layer.backgroundColor = [UIColor clearColor].CGColor;
    [layer setVideoGravity:AVLayerVideoGravityResizeAspectFill];

Answer 1

您可以预加载一个AVPlayer并观察它的status。一旦它改变了AVPlayerStatusReadyToPlay，你应该能够开始播放没有任何延迟。