Meet ScreenCaptureKit

6:53 - Creating a SCShareableContent object

// Creating a SCShareableContent object

// Get the content that's available to capture.
let content = try await SCShareableContent.excludingDesktopWindows(
    false,
    onScreenWindowsOnly: true
)

8:32 - Creating a SCContentFilter object

// Creating a SCContentFilter object

// Get the content that's available to capture.
let content = try await SCShareableContent.excludingDesktopWindows(
    false,
    onScreenWindowsOnly: true
)

// Exclude the sample app by matching the bundle identifier.
let excludedApps = content.applications.filter { app in
    Bundle.main.bundleIdentifier == app.bundleIdentifier
}

// Create a content filter that excludes the sample app.
filter = SCContentFilter(display: display,
                         excludingApplications: excludedApps,
                         exceptingWindows: [])

10:23 - Creating a SCStreamConfiguration object

// Creating a SCStreamConfiguration object
let streamConfig = SCStreamConfiguration()
        
// Set output resolution to 1080p
streamConfig.width = 1920
streamConfig.height = 1080

// Set the capture interval at 60 fps
streamConfig.minimumFrameInterval = CMTime(value: 1, timescale: CMTimeScale(60))

// Hides cursor
streamConfig.showsCursor = false

// Enable audio capture
streamConfig.capturesAudio = true

// Set sample rate to 48000 kHz stereo
streamConfig.sampleRate = 48000
streamConfig.channelCount = 2

11:46 - Creating and starting a SCStream object

// Creating and starting a SCStream object

// Create a capture stream with the filter and stream configuration
stream = SCStream(filter: filter, configuration: streamConfig, delegate: self)

// Start the capture session
try await stream?.startCapture()      


// ...
// Error handling delegate 
func stream(_ stream: SCStream, didStopWithError error: Error) {
    DispatchQueue.main.async {
        self.logger.error("Stream stopped with error: \(error.localizedDescription)")
        self.error = error
        self.isRecording = false
   }
}

13:07 - Getting media samples

// SCStreamOutput protocol implementation
func stream(_ stream: SCStream, didOutputSampleBuffer sampleBuffer: CMSampleBuffer, of type: SCStreamOutputType) {
    switch type {
    case .screen:
        handleLatestScreenSample(sampleBuffer)
    case .audio:
        handleLatestAudioSample(sampleBuffer)
    }
}

// ...
// Create a capture stream with the filter and stream configuration
stream = SCStream(filter: filter, configuration: streamConfig, delegate: self)

// Add a stream output to capture screen and audio content
try stream?.addStreamOutput(self, type: .screen, sampleHandlerQueue: screenFrameOutputQueue)
try stream?.addStreamOutput(self, type: .audio, sampleHandlerQueue: audioFrameOutputQueue)

// Start the capture session
try await stream?.startCapture()