NSString*videoPath = [[NSBundle mainBundle]pathForResource:@"视频名称"ofType:@"mp4"];

    NSURL*url = [NSURL fileURLWithPath:videoPath];

    AVAsset*asset = [AVAsset assetWithURL:url];

    AVPlayerItem *item = [AVPlayerItem playerItemWithAsset:asset];

    self.player = [AVPlayer playerWithPlayerItem:item];

    AVPlayerLayer*playerLayer  = [AVPlayerLayer playerLayerWithPlayer:self.player];

    playerLayer.frame=CGRectMake(0,0,SCREEN_WIDTH,SCREEN_HEIGHT);

    playerLayer.videoGravity =AVLayerVideoGravityResizeAspectFill;

    [self.view.layer addSublayer:playerLayer];

    [self.player play];