Error while recording video on iphone using AVFoundation - iphone

Question

Im trying to record video using AVFoundation
I can save images but not video. When trying to save a video, I
got an error saying:
[AVCaptureMovieFileOutput startRecordingToOutputFileURL:recordingDelegate:] - no active/enabled connections.'
And here is my code:
session = [[AVCaptureSession alloc] init];
//session is global object.
session.sessionPreset = AVCaptureSessionPresetMedium;
AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
captureVideoPreviewLayer.frame = self.imgV.bounds;
[self.imgV.layer addSublayer:captureVideoPreviewLayer];
AVCaptureDevice *device =[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error = nil;
NSLog(#"start 3");
AVCaptureDeviceInput *input =
[AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
if (!input) {
NSLog(#"Error");
}
[session addInput:input];
stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys: AVVideoCodecJPEG, AVVideoCodecKey, nil];
[stillImageOutput setOutputSettings:outputSettings];
[session addOutput:stillImageOutput];
aMovieFileOutput = [[AVCaptureMovieFileOutput alloc] init];
[session addOutput:aMovieFileOutput];
[session startRunning];
[self performSelector:#selector(startRecording) withObject:nil afterDelay:10.0];
//[aMovieFileOutput startRecordingToOutputFileURL:fileURL recordingDelegate:self];
//previously i used to do this way but saw people doing it after delay thought it might be taking some time to initialized so tried this way also.
}
- (void) startRecording
{
NSLog(#"startRecording");
NSString *plistPath;
NSString *rootPath;
rootPath= [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
plistPath = [rootPath stringByAppendingPathComponent:#"test.mov"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:plistPath];
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:plistPath]) {
NSLog(#"file exist %s n url %# ",[rootPath UTF8String],fileURL);
}
[aMovieFileOutput startRecordingToOutputFileURL:fileURL recordingDelegate:self];
}
Also I am trying to test this on Iphone 3G with IOs-4.1.

Answer 1

Also worth noting this can happen if you've set the session preset to 'photo'.
[session setSessionPreset:kCaptureSessionPresetPhoto];
Which should be:
[session setSessionPreset:kCaptureSessionPresetVideo];

Answer 2

You should be adding your outputs between a [AVCaptureSession beginConfiguration] and [AVCaptureSession commitConfiguration] pair.

Answer 3

This error can occur when you pass an object as a delegate using startRecordingToOutputFileURL:recordingDelegate: method, but this object does not have the
captureOutput:didStartRecordingToOutputFileAtURL:fromConnections: AVCaptureFileOutputRecordingDelegate method implemented.

Answer 4

Implement the AVCaptureFileOutputRecordingDelegate protocol. Make sure the path of video file is correct and the video file is not exist, as the movie file output does not overwrite existing resources.