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Devo implementare la funzionalità per sospendere e riprendere ripetutamente l'acquisizione video in una singola sessione, ma aggiungere ogni nuovo segmento (i segmenti catturati dopo ogni pausa) allo stesso file video , con AVFoundation. Attualmente, ogni volta che premo "stop" e "registra" di nuovo, salva semplicemente un nuovo file video nella directory dei documenti del mio iPhone e inizia l'acquisizione in un nuovo file. Ho bisogno di essere in grado di premere il tasto "record/stop" sopra, acquisire solo il video & audio quando record è attiva ... poi, quando si preme il tasto "fatto", avere un unico file AV con tutti i segmenti insieme. E tutto questo deve accadere nella stessa sessione di cattura/sessione di anteprima.Sospendi e riprendi l'acquisizione video utilizzando AVCaptureMovieFileOutput e AVCaptureVideoDataOutput in iOS
Non sto utilizzando AVAssetWriterInput.
L'unico modo in cui posso pensare di provare questo è quando viene premuto il pulsante "done", prendendo ogni singolo file di output e combinandoli in un unico file.
Questo codice funziona per iOS 5, ma non per iOS 6. In realtà per iOS 6, la prima volta quando pausa di registrazione (arresto della registrazione) AVCaptureFileOutputRecordingDelegate metodo (captureOutput: didFinishRecordingToOutputFileAtURL: fromConnections: error:) viene chiamato, ma dopo che quando inizia la registrazione delegato metodo (captureOutput: didFinishRecordingToOutputFileAtURL: fromConnections: error:) viene chiamato di nuovo ma non viene chiamato al momento della registrazione stop.
Ho bisogno di una soluzione per questo problema. Mi aiuti per favore.
//View LifeCycle
- (void)viewDidLoad
{
[super viewDidLoad];
self.finalRecordedVideoName = [self stringWithNewUUID];
arrVideoName = [[NSMutableArray alloc]initWithCapacity:0];
arrOutputUrl = [[NSMutableArray alloc] initWithCapacity:0];
CaptureSession = [[AVCaptureSession alloc] init];
captureDevices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
if ([captureDevices count] > 0)
{
NSError *error;
VideoInputDevice = [[AVCaptureDeviceInput alloc] initWithDevice:[self backFacingCamera] error:&error];
if (!error)
{
if ([CaptureSession canAddInput:VideoInputDevice])
[CaptureSession addInput:VideoInputDevice];
else
NSLog(@"Couldn't add video input");
}
else
{
NSLog(@"Couldn't create video input");
}
}
else
{
NSLog(@"Couldn't create video capture device");
}
//ADD VIDEO PREVIEW LAYER
NSLog(@"Adding video preview layer");
AVCaptureVideoPreviewLayer *layer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:CaptureSession];
[self setPreviewLayer:layer];
UIDeviceOrientation currentOrientation = [UIDevice currentDevice].orientation;
NSLog(@"%d",currentOrientation);
if (currentOrientation == UIDeviceOrientationPortrait)
{
PreviewLayer.orientation = AVCaptureVideoOrientationPortrait;
}
else if (currentOrientation == UIDeviceOrientationPortraitUpsideDown)
{
PreviewLayer.orientation = AVCaptureVideoOrientationPortraitUpsideDown;
}
else if (currentOrientation == UIDeviceOrientationLandscapeRight)
{
PreviewLayer.orientation = AVCaptureVideoOrientationLandscapeRight;
}
else if (currentOrientation == UIDeviceOrientationLandscapeLeft)
{
PreviewLayer.orientation = AVCaptureVideoOrientationLandscapeLeft;
}
[[self PreviewLayer] setVideoGravity:AVLayerVideoGravityResizeAspectFill];
//ADD MOVIE FILE OUTPUT
NSLog(@"Adding movie file output");
MovieFileOutput = [[AVCaptureMovieFileOutput alloc] init];
VideoDataOutput = [[AVCaptureVideoDataOutput alloc] init];
[VideoDataOutput setSampleBufferDelegate:self queue:dispatch_get_main_queue()];
NSString* key = (NSString*)kCVPixelBufferBytesPerRowAlignmentKey;
NSNumber* value = [NSNumber numberWithUnsignedInt:kCVPixelFormatType_32BGRA];
NSDictionary* videoSettings = [NSDictionary dictionaryWithObject:value forKey:key];
[VideoDataOutput setVideoSettings:videoSettings];
Float64 TotalSeconds = 60; //Total seconds
int32_t preferredTimeScale = 30; //Frames per second
CMTime maxDuration = CMTimeMakeWithSeconds(TotalSeconds, preferredTimeScale);//<<SET MAX DURATION
MovieFileOutput.maxRecordedDuration = maxDuration;
MovieFileOutput.minFreeDiskSpaceLimit = 1024 * 1024; //<<SET MIN FREE SPACE IN BYTES FOR RECORDING TO CONTINUE ON A VOLUME
//SET THE CONNECTION PROPERTIES (output properties)
[self CameraSetOutputProperties]; //(We call a method as it also has to be done after changing camera)
AVCaptureConnection *videoConnection = nil;
for (AVCaptureConnection *connection in [MovieFileOutput connections])
{
NSLog(@"%@", connection);
for (AVCaptureInputPort *port in [connection inputPorts])
{
NSLog(@"%@", port);
if ([[port mediaType] isEqual:AVMediaTypeVideo])
{
videoConnection = connection;
}
}
}
if([videoConnection isVideoOrientationSupported]) // **Here it is, its always false**
{
[videoConnection setVideoOrientation:[[UIDevice currentDevice] orientation]];
} NSLog(@"Setting image quality");
[CaptureSession setSessionPreset:AVCaptureSessionPresetLow];
//----- DISPLAY THE PREVIEW LAYER -----
CGRect layerRect = CGRectMake(5, 5, 299, ([[UIScreen mainScreen] bounds].size.height == 568)?438:348);
[self.PreviewLayer setBounds:layerRect];
[self.PreviewLayer setPosition:CGPointMake(CGRectGetMidX(layerRect),CGRectGetMidY(layerRect))];
if ([CaptureSession canAddOutput:MovieFileOutput])
[CaptureSession addOutput:MovieFileOutput];
[CaptureSession addOutput:VideoDataOutput];
//We use this instead so it goes on a layer behind our UI controls (avoids us having to manually bring each control to the front):
CameraView = [[UIView alloc] init];
[videoPreviewLayer addSubview:CameraView];
[videoPreviewLayer sendSubviewToBack:CameraView];
[[CameraView layer] addSublayer:PreviewLayer];
//----- START THE CAPTURE SESSION RUNNING -----
[CaptureSession startRunning];
}
#pragma mark - IBACtion Methods
-(IBAction)btnStartAndStopPressed:(id)sender
{
UIButton *StartAndStopButton = (UIButton*)sender;
if ([StartAndStopButton isSelected] == NO)
{
[StartAndStopButton setSelected:YES];
[btnPauseAndResume setEnabled:YES];
[btnBack setEnabled:NO];
[btnSwitchCameraInput setHidden:YES];
NSDate *date = [NSDate date];
NSLog(@" date %@",date);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *recordedFileName = nil;
recordedFileName = [NSString stringWithFormat:@"output%@.mov",date];
NSString *documentsDirectory = [paths objectAtIndex:0];
self.outputPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@",recordedFileName]];
NSLog(@"%@",self.outputPath);
[arrVideoName addObject:recordedFileName];
NSURL *outputURL = [[NSURL alloc] initFileURLWithPath:self.outputPath];
if ([[NSFileManager defaultManager] fileExistsAtPath:self.outputPath])
{
NSError *error;
if ([[NSFileManager defaultManager] removeItemAtPath:self.outputPath error:&error] == NO)
{
//Error - handle if requried
}
}
//Start recording
[MovieFileOutput startRecordingToOutputFileURL:outputURL recordingDelegate:self];
recordingTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(VideoRecording) userInfo:nil repeats:YES];
}
else
{
[StartAndStopButton setSelected:NO];
[btnPauseAndResume setEnabled:NO];
[btnBack setEnabled:YES];
[btnSwitchCameraInput setHidden:NO];
NSLog(@"STOP RECORDING");
WeAreRecording = NO;
[MovieFileOutput stopRecording];
[((ActOutAppDelegate *)ActOut_AppDelegate) showLoadingViewOnView:self.view withLabel:@"Please wait...."];
if ([recordingTimer isValid])
{
[recordingTimer invalidate];
recordingTimer = nil;
recordingTime = 30;
}
stopRecording = YES;
}
}
- (IBAction)btnPauseAndResumePressed:(id)sender
{
UIButton *PauseAndResumeButton = (UIButton*)sender;
if (PauseAndResumeButton.selected == NO)
{
PauseAndResumeButton.selected = YES;
NSLog(@"recording paused");
WeAreRecording = NO;
[MovieFileOutput stopRecording];
[self pauseTimer:recordingTimer];
[btnStartAndStop setEnabled:NO];
[btnBack setEnabled:YES];
[btnSwitchCameraInput setHidden:NO];
}
else
{
PauseAndResumeButton.selected = NO;
NSLog(@"recording resumed");
[btnStartAndStop setEnabled:YES];
[btnBack setEnabled:NO];
[btnSwitchCameraInput setHidden:YES];
WeAreRecording = YES;
NSDate *date = [NSDate date];
NSLog(@" date %@",date);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *recordedFileName = nil;
recordedFileName = [NSString stringWithFormat:@"output%@.mov",date];
NSString *documentsDirectory = [paths objectAtIndex:0];
self.outputPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@",recordedFileName]];
NSLog(@"%@",self.outputPath);
[arrVideoName addObject:recordedFileName];
NSURL *outputURL = [[NSURL alloc] initFileURLWithPath:self.outputPath];
if ([[NSFileManager defaultManager] fileExistsAtPath:self.outputPath])
{
NSError *error;
if ([[NSFileManager defaultManager] removeItemAtPath:self.outputPath error:&error] == NO)
{
//Error - handle if requried
}
}
[self resumeTimer:recordingTimer];
//Start recording
[MovieFileOutput startRecordingToOutputFileURL:outputURL recordingDelegate:self];
}
}
- (void) CameraSetOutputProperties
{
//SET THE CONNECTION PROPERTIES (output properties)
AVCaptureConnection *CaptureConnection = [MovieFileOutput connectionWithMediaType:AVMediaTypeVideo];
[CaptureConnection setVideoOrientation:AVCaptureVideoOrientationPortrait];
//Set frame rate (if requried)
CMTimeShow(CaptureConnection.videoMinFrameDuration);
CMTimeShow(CaptureConnection.videoMaxFrameDuration);
if (CaptureConnection.supportsVideoMinFrameDuration)
CaptureConnection.videoMinFrameDuration = CMTimeMake(1, CAPTURE_FRAMES_PER_SECOND);
if (CaptureConnection.supportsVideoMaxFrameDuration)
CaptureConnection.videoMaxFrameDuration = CMTimeMake(1, CAPTURE_FRAMES_PER_SECOND);
CMTimeShow(CaptureConnection.videoMinFrameDuration);
CMTimeShow(CaptureConnection.videoMaxFrameDuration);
}
- (AVCaptureDevice *) CameraWithPosition:(AVCaptureDevicePosition) Position
{
NSArray *Devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
for (AVCaptureDevice *Device in Devices)
{
if ([Device position] == Position)
{
NSLog(@"%d",Position);
return Device;
}
}
return nil;
}
#pragma mark - AVCaptureFileOutputRecordingDelegate Method
-(void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection
{
if(videoWriterInput.readyForMoreMediaData && WeAreRecording) [videoWriterInput appendSampleBuffer:sampleBuffer];
for(AVCaptureConnection *captureConnection in [captureOutput connections])
{
if ([captureConnection isVideoOrientationSupported])
{
AVCaptureVideoOrientation orientation = AVCaptureVideoOrientationLandscapeLeft;
[captureConnection setVideoOrientation:orientation];
}
}
UIDeviceOrientation curOr = [[UIDevice currentDevice] orientation];
CGAffineTransform t;
if (curOr == UIDeviceOrientationPortrait)
{
t = CGAffineTransformMakeRotation(-M_PI/2);
}
else if (curOr == UIDeviceOrientationPortraitUpsideDown)
{
t = CGAffineTransformMakeRotation(M_PI/2);
}
else if (curOr == UIDeviceOrientationLandscapeRight)
{
t = CGAffineTransformMakeRotation(M_PI);
}
else
{
t = CGAffineTransformMakeRotation(0);
}
}
- (void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL fromConnections:(NSArray *)connections error:(NSError *)error
{
NSLog(@"didFinishRecordingToOutputFileAtURL - enter");
NSLog(@"output file url : %@", [outputFileURL absoluteString]);
BOOL RecordedSuccessfully = YES;
if ([error code] != noErr)
{
// A problem occurred: Find out if the recording was successful.
id value = [[error userInfo] objectForKey:AVErrorRecordingSuccessfullyFinishedKey];
if (value)
{
RecordedSuccessfully = [value boolValue];
}
}
AVCaptureConnection *videoConnection=nil;
for (AVCaptureConnection *connection in [MovieFileOutput connections])
{
NSLog(@"%@", connection);
for (AVCaptureInputPort *port in [connection inputPorts])
{
NSLog(@"%@", port);
if ([[port mediaType] isEqual:AVMediaTypeVideo])
{
videoConnection = connection;
}
}
}
if([videoConnection isVideoOrientationSupported]) // **Here it is, its always false**
{
[videoConnection setVideoOrientation:[[UIDevice currentDevice] orientation]];
} NSLog(@"Setting image quality");
NSData *videoData = [NSData dataWithContentsOfURL:outputFileURL];
[videoData writeToFile:self.outputPath atomically:NO];
[arrOutputUrl addObject:outputFileURL];
if (stopRecording)
{
[self mergeMultipleVideo];
}
}
//Method to merge multiple audios
-(void)mergeMultipleVideo
{
mixComposition = [AVMutableComposition composition];
AVMutableCompositionTrack *compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
CMTime nextClipStartTime = kCMTimeZero;
NSLog(@"Array of output file url : %@", arrOutputUrl);
if (arrOutputUrl.count > 0)
{
for(int i = 0 ;i < [arrOutputUrl count];i++)
{
AVURLAsset* VideoAsset = [[AVURLAsset alloc]initWithURL:[arrOutputUrl objectAtIndex:i] options:nil];
CMTimeRange timeRangeInAsset;
timeRangeInAsset = CMTimeRangeMake(kCMTimeZero, [VideoAsset duration]);
[compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, VideoAsset.duration) ofTrack:[[VideoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];
nextClipStartTime = CMTimeAdd(nextClipStartTime, timeRangeInAsset.duration);
}
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *myPathDocs = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.mov",self.finalRecordedVideoName]];
NSURL *url = [NSURL fileURLWithPath:myPathDocs];
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetHighestQuality];
exportSession.outputURL=url;
exportSession.outputFileType = AVFileTypeQuickTimeMovie;
exportSession.shouldOptimizeForNetworkUse = YES;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
dispatch_async(dispatch_get_main_queue(), ^{
[self exportDidFinish:exportSession path:myPathDocs];
});
}];
}
-(void)exportDidFinish:(AVAssetExportSession*)session path:(NSString*)outputVideoPath
{
NSLog(@"session.status : %d",session.status);
if (session.status == AVAssetExportSessionStatusCompleted)
{
NSURL *outputURL = session.outputURL;
NSData *videoData = [NSData dataWithContentsOfURL:outputURL];
[videoData writeToFile:outputVideoPath atomically:NO];
if ([arrVideoName count] > 0)
{
for (int i = 0; i < [arrVideoName count]; i++)
{
NSArray* documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* fullFilePath = [[documentPaths objectAtIndex:0] stringByAppendingPathComponent: [NSString stringWithFormat:@"%@",[arrVideoName objectAtIndex:i]]];
NSLog(@"Full path of file to be deleted: %@",fullFilePath);
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
if ([fileManager fileExistsAtPath:fullFilePath])
{
[fileManager removeItemAtPath:fullFilePath error:&error];
}
}
[arrVideoName removeAllObjects];
}
if (arrOutputUrl.count > 0)
{
[arrOutputUrl removeAllObjects];
}
[((ActOutAppDelegate *)ActOut_AppDelegate) removeLoadingViewfromView:self.view];
[self.view addSubview:afterRecordingPopupView];
}
}
Hai trovato la soluzione? –