Capturing iSight from Macbook
Lately I’ve been writing Objective-C/Cocoa code, and lately I’ve learned how-to capture video from an iSight on a Macbook. It’s actually easy. Here is the code. and I’ve also attached the example application I was writing so you can take a look at it.
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[Download Application]
#import <Cocoa/Cocoa.h> #import <QTKit/QTKit.h> @interface MyRecorderController : NSObject { IBOutlet QTCaptureView * mCaptureView; QTCaptureSession * mCaptureSession; QTCaptureDeviceInput * mCaptureDeviceInput; } - (IBAction)startRecording: (id)sender; - (IBAction)stopRecording: (id)sender; @end @implementation MyRecorderController - (IBAction)startRecording: (id)sender { // Create a new Capture Session mCaptureSession = [[QTCaptureSession alloc] init]; //Connect inputs and outputs to the session BOOL success = NO; NSError *error; // Find a video device QTCaptureDevice *device = [QTCaptureDevice defaultInputDeviceWithMediaType:QTMediaTypeVideo]; if(device) { success = [device open:&error]; if(!success) { // Handle Error! } // Add the video device to the session as device input mCaptureDeviceInput = [[QTCaptureDeviceInput alloc] initWithDevice:device]; success = [mCaptureSession addInput:mCaptureDeviceInput error:&error]; if(!success) { // Handle error } // Associate the capture view in the UI with the session [mCaptureView setCaptureSession:mCaptureSession]; // Start the capture session runing [mCaptureSession startRunning]; } // End if device } - (IBAction)stopRecording: (id)sender { if([mCaptureSession isRunning]) { [mCaptureSession stopRunning]; [mCaptureSession release]; [mCaptureDeviceInput release]; } } @end
