AVCaptureMovieFileOutput后用AVPlayer播放video

我用AVFoundation创build了类似于snapchat的自定义相机。 图片方面的作品：拍照，我显示图片。 现在我正在试着拍一个video并显示video。

我已经捕获了一个成功的video文件，经过testing并与MPMoviePlayer一起工作，但无法在AVPlayer上播放。

- (void)takeVideoAction:(id)sender { NSString *outputPath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"output.mp4"]; NSFileManager *manager = [[NSFileManager alloc] init]; if ([manager fileExistsAtPath:outputPath]){ [manager removeItemAtPath:outputPath error:nil]; } [movieFileOutput startRecordingToOutputFileURL:[NSURL fileURLWithPath:outputPath] recordingDelegate:self]; } 

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 - (void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL fromConnections:(NSArray *)connections error:(NSError *)error{ AVURLAsset *asset = [AVURLAsset URLAssetWithURL:outputFileURL options:nil]; [asset loadValuesAsynchronouslyForKeys:@[@"tracks"] completionHandler:^{ dispatch_async(dispatch_get_main_queue(), ^{ NSError *error = nil; if([asset statusOfValueForKey:@"tracks" error:&error] == AVKeyValueStatusFailed){ NSLog(@"error: %@", [error description]); } else{ self.playerItem = [AVPlayerItem playerItemWithAsset:asset]; self.player = [AVPlayer playerWithPlayerItem:self.playerItem]; self.playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player]; self.playerLayer.frame = self.view.bounds; [self.view.layer addSublayer:self.playerLayer]; [self.player play]; } }); }]; } 

这是我第一次使用AVFoundation＆AVPlayer。 资产加载好后，我不能[self.player play] ？ 我需要等待项目状态为AVPlayerItemStatusReadyToPlay ？

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错误： 错误域= NSURLErrorDomain代码= -1100“在此服务器上找不到请求的URL。

Answer 1

我正在使用AVPlayerLayer播放video。 我用下面的代码，它工作正常。

 AVPlayer *avPlayerq = [AVPlayer playerWithURL:NSURL]; avPlayerq.actionAtItemEnd = AVPlayerActionAtItemEndNone; AVPlayerLayer *videoLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayerq]; videoLayer.frame= self.view.bounds; videoLayer.videoGravity=AVLayerVideoGravityResizeAspectFill; [self.view.layer addSublayer:videoLayer]; [avPlayerq play]; 

希望这可以帮助你。