capture-kit is a framework written in Objective-C that provides functions that can be used to capture the contents of a screen.

• Usage
• Requirements
• Communication
• Contributing
• Author
• License

1. Create a new instance of NVCaptureService that encompasses screen capturing functionality.

NVCaptureService *captureService = [[NVCaptureService alloc] init];

2. Set a delegate to receive recording-related events:

captureService.delegate = self;

3. An optional step: If you want to capture microphone sound, you need to obtain a microphone ID. To do this, create a new instance of NVAudioService that provides a list of connected device IDs.

NVAudioService *audioService = [[NVAudioService alloc] initWithMediaDeviceProvider:[NVMediaDeviceProvider new]];
NSArray<NSString *> *ids = [audioService audioDevicesIDs];

You can also check whether an audio device is connected to the system like this:

BOOL isConnected = [audioService isAudioDeviceConnected:@"<device_id_here>"];

4. Start screen capture

NSRect sampleRect = CGRectMake(0, 0, 1200, 1800);
NSURL *sampleURL = [[NSURL alloc] initWithString:@"file_url"];

[_captureService startRecordingWithAudioDeviceID:@"<device_id_here>"
                                            rect:sampleRect
                                 directDisplayID:kCGDirectMainDisplay
                                   outputFileURL:sampleURL];

Also, you can pass a custom capture configuration using objc - (void)startRecordingWithConfiguration:deviceID:rect:directDisplayID:outputFileURL:

5. For pausing, resuming, and cancelling, you can use the following methods:

- (void)pause
- (void)resume
- (void)stop

• macOS 11.0+
• Xcode 14.0

• If you found a bug, open an issue.
• If you have a feature request, open an issue.
• If you want to contribute, submit a pull request.

Bootstrapping development environment

make bootstrap

Please feel free to help out with this project! If you see something that could be made better or want a new feature, open up an issue or send a Pull Request!

Nikita Vasilev, [email protected]

capture-kit is available under the MIT license. See the LICENSE file for more info.