AVCaptureMovieFileOutput - sem conexões ativas / ativadas
Estou tentando gravar vídeo no meu aplicativo para iPhone usando o AVFoundation. Mas sempre que clico no botão Gravar, o aplicativo trava com esta mensagem
- [AVCaptureMovieFileOutput startRecordingToOutputFileURL: recordingDelegate:] - não há conexões ativas / ativadas.
Eu sei a mesma pergunta feita no SO, mas nenhuma de suas respostas me ajudou. Meu problema é que o mesmo código funciona perfeitamente com outro aplicativo e, quando tento usar exatamente o mesmo código neste aplicativo - falha. Mas a captura de fotos está funcionando bem.
Adicionando meus códigos aqui - ajude-me, Agradecemos antecipadamente
-(void)viewDidLoad
{
[super viewDidLoad];
self.captureSession = [[AVCaptureSession alloc] init];
AVCaptureDevice *videoDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
AVCaptureDevice *audioDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
self.videoInput = [AVCaptureDeviceInput deviceInputWithDevice:videoDevice error:nil];
self.audioInput = [[AVCaptureDeviceInput alloc] initWithDevice:audioDevice error:nil];
self.stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
NSDictionary *stillImageOutputSettings = [[NSDictionary alloc] initWithObjectsAndKeys:
AVVideoCodecJPEG, AVVideoCodecKey, nil];
[self.stillImageOutput setOutputSettings:stillImageOutputSettings];
self.movieOutput = [[AVCaptureMovieFileOutput alloc] init];
[self.captureSession addInput:self.videoInput];
[self.captureSession addOutput:self.stillImageOutput];
previewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession];
UIView *aView = self.view;
previewLayer.frame = CGRectMake(70, 190, 270, 270);
[aView.layer addSublayer:previewLayer];
}
-(NSURL *) tempFileURL
{
NSString *outputPath = [[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"output.mov"];
NSURL *outputURL = [[NSURL alloc] initFileURLWithPath:outputPath];
NSFileManager *manager = [[NSFileManager alloc] init];
if ([manager fileExistsAtPath:outputPath])
{
[manager removeItemAtPath:outputPath error:nil];
}
return outputURL;
}
-(IBAction)capture:(id)sender
{
if (self.movieOutput.isRecording == YES)
{
[self.movieOutput stopRecording];
}
else
{
[self.movieOutput startRecordingToOutputFileURL:[self tempFileURL] recordingDelegate:self];
}
}
-(void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL
fromConnections:(NSArray *)connections
error:(NSError *)error
{
BOOL recordedSuccessfully = YES;
if ([error code] != noErr)
{
id value = [[error userInfo] objectForKey:AVErrorRecordingSuccessfullyFinishedKey];
if (value)
recordedSuccessfully = [value boolValue];
NSLog(@"A problem occurred while recording: %@", error);
}
if (recordedSuccessfully) {
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeVideoAtPathToSavedPhotosAlbum:outputFileURL
completionBlock:^(NSURL *assetURL, NSError *error)
{
UIAlertView *alert;
if (!error)
{
alert = [[UIAlertView alloc] initWithTitle:@"Video Saved"
message:@"The movie was successfully saved to you photos library"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
}
else
{
alert = [[UIAlertView alloc] initWithTitle:@"Error Saving Video"
message:@"The movie was not saved to you photos library"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
}
[alert show];
}
];
}
}