The two ScreenCaptureKit WWDC22 sessions show how to capture with the new framework but the retina factor is hardcoded to 2 in SCStreamConfiguration. When using on a non-retina display, the screencapture is floating on the upper-left corner of the image buffer. There does not seem to be a simple way to retrieve the retina factor from the SCShareableContent data (when configuring the capture). When processing the streaming output, the SCStreamFrameInfo attachment is supposed to have a scaleFactor property but .scaleFactor does not return a value. I have found out that the attachement dictionary contains SCStreamUpdateFrameDisplayResolution. This entry gives me the retina factor but it is not an official SCStreamFrameInfo key. I list the keys to access it. What is the proper way with ScreenCapture to handle the retina factors ?

Hi, I would like to reset system window private picker alert with ScreenCapture kit. i can reset the ScreenCapture permission with tccutil reset ScreenCapture. but it does not reset the system window private picker alert. i tried deleting the application directory from container and it does not help. the system window private picker alert uses the old approval i gave and it does not prompt a new alert. How can i starta with fresh screencapture kit settings for an app in testing? Thanks

Hi, I'm using ScreenCaptureKit on macOS 14+ to record a single window. I've noticed that the Presenter Overlay only appears when capturing the entire screen, but it does not appear when recording a specific window or a region. Is there a way to enable the Presenter Overlay while recording a single window or a defined region, similar to how it works with full-screen capture? Any guidance or clarification would be greatly appreciated. Thanks in advance!

I’m using ScreenCaptureKit on macOS to grab frames and measure end-to-end latency (capture → my delegate callback). For each CMSampleBuffer I read: let pts = CMSampleBufferGetPresentationTimeStamp(sampleBuffer).seconds to get the “capture” timestamp, and I also extract the mach-absolute display time: let attachments = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, createIfNecessary: false) as? [[SCStreamFrameInfo: Any]] let displayMach = attachments?.first?[.displayTime] as? UInt64 // convert mach ticks to seconds... Then I compare both against the current time: let now = CACurrentMediaTime() let latencyFromPTS = now - pts let latencyFromDisplay = now - displayTimeSeconds But I consistently see negative values for both calculations—i.e. the PTS or displayTime often end up numerically larger than now. This suggests that the “presentation timestamp” and the mach-absolute display time are coming from a different epoch or clock domain than CACurrentMediaTime(). Questions: Which clocks/epochs does ScreenCaptureKit use for PTS and for .displayTime? How can I align these timestamps with CACurrentMediaTime() so that now - pts and now - displayTime reliably yield non-negative real-world latencies? Any pointers on the correct clock conversions or APIs to use would be greatly appreciated.

Issue Description I'm implementing a system audio capture feature using AudioHardwareCreateProcessTap and AudioHardwareCreateAggregateDevice. The app successfully creates the tap and aggregate device, but when starting the IO procedure with AudioDeviceStart, it sometimes fails with OSStatus error 1852797029. (The operation couldn’t be completed. (OSStatus error 1852797029.)) The error occurs inconsistently, which makes it particularly difficult to debug and reproduce. Questions Has anyone encountered this intermittent "nope" error code (0x6e6f7065) when working with system audio capture? Are there specific conditions or system states that might trigger this error sporadically? Are there any known workarounds for handling this intermittent failure case? Any insights or guidance would be greatly appreciated. I'm wondering if anyone else has encountered this specific "nope" error code (0x6e6f7065) when working with system audio capture.

Hi! I'm developing an application based on Chrome that needs to take regular screenshots of webpages. Under the hood (actually Chromium), it uses SCScreenshotManager to capture screenshots automatically (without user interaction). I've noticed that regularly using this API triggers a user notification saying: "Your Screen 'AppTest' has accessed your screen and system audio 3,594 times in the past 30 days. You can manage this in Settings." How can I prevent this notification from appearing? Are there any specific entitlements(Or configuration of SCScreenshotManager) that I can use? Thanks!

Is there anything to make a one off screenshot? like cmd+shift+3. But with code? There is ScreenCaptureKit - but it seems to be more for video / audio streams. I thought of trying to get the first frame from the video stream. But it seems to be rather a complex workaround for a simple problem.

My app records the screen to use the audio for audio analysis for a music visualization. The app works perfectly in production but when uploaded to Transporter is rejected as below. What is the correct entitlement to use as the entitlement I am using seems deprecated. Validation failed (409) Invalid Code Signing Entitlements. Your application bundle's signature contains code signing entitlements that are not supported on macOS. Specifically, key 'com.apple.security.screen-capture' in 'com.boxedpandora.pulse.pkg/Payload/PuLsE.app/Contents/MacOS/PuLsE' is not supported. (ID: a1a436f5-925d-43bc-908d-0761064d589b) Many thanks for any input provided!

Hi all, with my app ScreenFloat, you can record your screen, along with system- and microphone audio. Those two audio feeds are recorded into separate audio tracks in order to individually remove or edit them later on. Now, these recordings you create with ScreenFloat can be drag-and-dropped to other apps instantly. So far, so good, but some apps, like Slack, or VLC, or even websites like YouTube, do not play back multiple audio tracks, just one. So what I'm trying to do is, on dragging the video recording file out of ScreenFloat, instantly baking together the two individual audio tracks into one, and offering that new file as the drag and drop file, so that all audio is played in the target app. But it's slow. I mean, it's actually quite fast, but for drag and drop, it's slow. My approach is this: "Bake together" the two audio tracks into a one-track m4a audio file using AVMutableAudioMix and AVAssetExportSession Take the video track, add the new audio file as an audio track to it, and render that out using AVAssetExportSession For a quick benchmark, a 3'40'' movie, step 1 takes ~1.7 seconds, and step two adds another ~1.5 seconds, so we're at ~3.2 seconds. That's an eternity for a drag and drop, where the user might cancel if there's no immediate feedback. I could also do it in one step, but then I couldn't use the AV*Passthrough preset, and that makes it take around 32 seconds then, because I assume it touches the video data (which is unnecessary in this case, so I think the two-step approach here is the fastest). So, my question is, is there a faster way? The best idea I can come up with right now is, when initially recording the screen with system- and microphone audio as separate tracks, to also record both of them into a third, muted, "hidden" track I could use later on, basically eliminating the need for step one and just ripping the two single audio tracks out of the movie and only have the video and the "hidden" track (then unmuted), but I'd still have a ~1.5 second delay there. Also, there's the processing and data overhead (basically doubling the movie's audio data). All this would be great for an export operation (where one expects it to take a little time), but for a drag-and-drop operation, it's not ideal. I've discarded the idea of doing a promise file drag, because many apps do not accept those, and I want to keep wide compatibility with all sorts of apps. I'd appreciate any ideas or pointers. Thank you kindly, Matthias

I have an SCStreamDelegate for capturing frames from applications. On recent point releases of macOS Sonoma, I've noticed that the stream is being cancelled with no user action being taken. I started trying to debug it and when my on error method is called, the error parameter being passed is null: func stream(_ stream: SCStream, didStopWithError error: Error) { /*debugger shows this and segfaults if I try to print "\(error)" error (Error) > error = (Builtin.RawPointer) 0x0 */ From what I can tell, error should be a valid NSError so I can check the error code, based on similar code I've seen in, for example OBS (https://github.com/obsproject/obs-studio/blob/265239d4174f8d291b0de437088c5b78f8e27687/plugins/mac-capture/mac-sck-common.m#L29) Usually when this happens, the menubar icon for screen sharing (where I would click to change sharing window, etc) stays there even after my app has closed an no apps are doing sharing stuff. Has anyone come across this before? Am I misinterpreting what the debugger is saying about the error parameter? I'm running macos 14.7.3, but I just updated from 14.7.2 earlier and had basically the same issue on both macos versions

I'm trying to use ScreenCaptureKit on a Mac Catalyst app, on macOS 12.5.1. I'm not sure if I'm doing something wrong, but it crashes as soon as I try to request SCShareableContent. It crashes on internal code, calling a method it can't find, which makes me think this is a bug in the framework rather than incorrect configuration. Any hints on how to work around this problem? The crash is: ** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[RPDaemonProxy fetchShareableContentWithOption:windowID:withCompletionHandler:]: unrecognized selector sent to instance 0x6000037d5dc0' terminating with uncaught exception of type NSException ScreenCaptureKit-Crash.txt

Our application uses Screen capture KIT API for screen recording. But from Sequoia OS, we are getting additional permission dialog which states " is requesting to bypass the system private window picker and directly access your screen and audio". It seems we need to add our app under "System settings -> Privacy & Security -> Remote Desktop" setting to avoid getting above additional dialogue in every few days. Some places mention use of .plist file that if mention in this file, the app will request for this permission. But did not seem to work or we do not understand that properly yet.

There are different kinds of screen-sharing applications, all using different APIs. The API used by AnyDesk, for example, or TeamViewer, which doesn't require light signals. I wonder if this is more appropriate for a corporate application, i.e. MDM, A screen-sharing application could be created and validated by Apple to display no light signals, and which could access the user's screen whenever the person wanted to after an initial acceptance? In other words, the user accepts to share his screen once, but won't be notified to accept the next time. Or is this impossible on iOS? I'd be honored to have some answers

Is there a way to distinguish physical mouse/keyboard input from remote control mouse/keyboard input on Mac? Or even better, is there a way to detect if my Mac is being remotely controlled?

Hi, On macOS Sonoma and earlier versions, I used my script along with a LaunchDaemon to continuously record my screen. However, after upgrading to macOS Sequoia, the LaunchDaemon no longer works for screen recording. It only works when I use a LaunchAgent. For my workflow, using a LaunchDaemon and running the ffmpeg process as root is much more efficient than running it as a regular user. Does anyone know how to run a script in the background using a LaunchDaemon on macOS Sequoia? Here are my LaunchDaemon plist and script: LaunchDaemon plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>local.ScreenRecord</string> <key>Disabled</key> <false/> <key>RunAtLoad</key> <true/> <key>KeepAlive</key> <true/> <key>Nice</key> <integer>-20</integer> <key>ProgramArguments</key> <array> <string>/bin/bash</string> <string>/usr/local/distrib/record.bash</string> </array> </dict> </plist> Script ## !!! START CONFIGURATION !!! # FFMPEG_LOC="/usr/local/distrib/ffmpeg" FFMPEG_INPUT="-hide_banner -f avfoundation -capture_cursor 1 -pixel_format uyvy422" FFMPEG_VSET="-codec libx264 -r 22 -crf 26 -preset veryfast -b:v 5M -maxrate 7M -bufsize 14M" TIME_REC="-t 600" FOLDER_REC="/usr/local/distrib/REC/" # ## !!! END CONFIGURATION !!! # # Find number id monitor MON_ID=$($FFMPEG_LOC -hide_banner -f avfoundation -list_devices true -i "" 2>&1 | awk -F'[]|[]' '/Capture\ screen/ {print $4}') # if [ -n "$MON_ID" ] then # Time for name DATE_REC=$(date +"%m-%d-%Y_%H-%M-%S") # Number of output video file OUTPUT_NUM=0 # Full command to record FFMPEG_FULL_COMMAND="" for MON_NUM in $MON_ID do FFMPEG_FULL_COMMAND=""$FFMPEG_FULL_COMMAND" "$FFMPEG_INPUT" -i "$MON_NUM" "$FFMPEG_VSET" "$TIME_REC" -map "$OUTPUT_NUM" "$FOLDER_REC""$DATE_REC"_Mon"$MON_NUM".mkv" let OUTPUT_NUM=$OUTPUT_NUM+1 done $FFMPEG_LOC $FFMPEG_FULL_COMMAND else echo "No monitors" sleep 5 fi

We are having issues with ScreenCaptureKit. Our use case is the following: We have multiple applications that each starts a stream capture, using ScreenCaptureKit. It works fine when just one application is streaming, but when starting multiple streams continuesly, all streams stops or crashes, without ScreenCaptureKit reporting an error back. Restarting replayd for the user will allow us to start streaming again, if the streaming applications are restartet too. We have build a small test program that we have tested on different Macs, running different versions of macOS, with identical results. The test program just calls the 'getShareableContentExcludingDesktopWindows' function multiple times, since this was the simplest way to show the problem. Our test setup is the following: Mac Mini M2 macOS 13.6 MacBook Pro M3 macOS 14.4 MacBook Pro M3 macOS 15.1 Code main.m #import <Foundation/Foundation.h> #import <ScreenCaptureKit/ScreenCaptureKit.h> @interface Runner : NSObject @property(atomic, assign) BOOL keepRunning; @property(atomic, retain) SCShareableContent* availableWindows; -(void) updateAvailableWindows; -(void) notif:(NSNotification*) aNotif; @end int main(int argc, const char * argv[]) { @autoreleasepool { NSRunLoop* loo = [NSRunLoop mainRunLoop]; Runner* r = [[Runner alloc] init]; [r updateAvailableWindows]; while (r.keepRunning) [loo runUntilDate:[NSDate distantFuture]]; NSLog(@"Program exit"); } return 0; } @implementation Runner -(instancetype) init { self = [super init]; if(self){ _keepRunning = YES; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(notif:) name:@"windowWasNotFound" object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(notif:) name:@"windowWasFound" object:nil]; } return self; } -(void) updateAvailableWindows { @autoreleasepool { NSLog(@"begin"); [SCShareableContent getShareableContentExcludingDesktopWindows:NO onScreenWindowsOnly:YES completionHandler:^(SCShareableContent* content, NSError* error){ NSLog(@"running"); if(!error){ self.availableWindows = content; for (__unused SCWindow* aWin in self.availableWindows.windows) { [NSThread sleepForTimeInterval:0.01]; } [[NSNotificationCenter defaultCenter] postNotificationName:@"windowWasFound" object:self.availableWindows]; } else{ [[NSNotificationCenter defaultCenter] postNotificationName:@"windowWasNotFound" object:nil]; } }]; } } -(void) notif:(NSNotification*) aNotif { if(aNotif.object) [self performSelectorOnMainThread:@selector(updateAvailableWindows) withObject:nil waitUntilDone:NO]; else{ NSLog(@"Not Found"); self.keepRunning = NO; } } @end How to replicate: Compile and run the program from multiple terminal windows (terminal must be granted screen recording permission) and notice that the output stops, when the replayd stops responding (our assumption). Restarting the application does nothing, before the replayd also is restarted. Running th application in Xcode gives the following error: [ERROR] -[RPDaemonProxy fetchShareableContentWithOption:windowID:currentProcess:withCompletionHandler:]_block_invoke:902 error: 4097 This error is not something we have been able to detect in our applications - and since the only workaround is restarting replayd and the applications, catching the error would help us.

I am trying to use ScreenCaptureKit to select this window automatically rather than having the user do it.

I've made a simple command line app that requires Screen recording permission. When I ran it from Xcode, it prompts for a permission and once I allowed it from the settings, it runs well. #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;unistd.h&gt; #include &lt;CoreGraphics/CGDisplayStream.h&gt; int main() { printf("# Start #\n"); if (CGPreflightScreenCaptureAccess()) { printf("# Permitted.\n"); } else { printf("# Not permitted.\n"); if (CGRequestScreenCaptureAccess() == false) { printf("# CGRequestScreenCaptureAccess() returning false\n"); } } size_t output_width = 1280; size_t output_height = 720; dispatch_queue_t dq = dispatch_queue_create("com.domain.screengrabber", DISPATCH_QUEUE_SERIAL); CGError err; CGDisplayStreamRef sref = CGDisplayStreamCreateWithDispatchQueue( 1, output_width, output_height, 'BGRA', NULL, dq, ^( CGDisplayStreamFrameStatus status, uint64_t time, IOSurfaceRef frame, CGDisplayStreamUpdateRef ref ) { printf("Got frame: %llu, FrameStatus:%d \n", time, status); } ); err = CGDisplayStreamStart(sref); if (kCGErrorSuccess != err) { printf("Error: failed to start streaming the display. %d\n", err); exit(EXIT_FAILURE); } while (true) { usleep(1e5); } CGDisplayStreamStop(sref); printf("\n\n"); return 0; } Now I want to execute this from terminal, so I went to the build folder and typed the app name. cd /Users/klee/Library/Developer/Xcode/DerivedData/ScreenStreamTest-ezddqbkzhndhakadslymnvpowtig/Build/Products/Debug ./ScreenStreamTest But I am getting following output without any prompt for permission. # Start # # Not permitted. # CGRequestScreenCaptureAccess() returning false Error: failed to start streaming the display. 1001 Is there a something I need to consider for this type of command line app?

A few weeks ago I requested the subject entitlement. I'm still waiting for it to be added to our account. Who or how can I find out what going on with it. I have no correspondence from Apple yet saying it was denied and why. https://developer.apple.com/documentation/bundleresources/entitlements/com.apple.developer.persistent-content-capture?language=objc Thank you.

I am a complete newbie when it comes to Swift and MacOS development. So apologies, I don't even know what is the right thing to search for. I have an app which uses ScreenCaptureKit. I had a preview working which showed the different windows available, it initially required me to give my app permissions for screen and system audio recording which I did. However now whenever I rebuild the app it asks for permission again and fails - despite the permission already being given.