#Dev driver for microphone mac os x code

Yes, you can run an OpenCV project on MacOS WITH your camera after the program has been successfully compiled to Unix Executable.

#Dev driver for microphone mac os x code

I sure would like to be able to step thru code to understand frame by frame possible design issues. Why does Apple allow us to access the camera via terminal but not in Xcode? What's the logic there? Adding the NSCameraUsageDescription key/value was a total bust. Copy ist save it elsewhere, modify it via Xcode, resubmit.) Note: Don't try this without keeping a copy of the original ist.

How does that even work? I did do a whole lot of testing, including researching modifying the ist for the Xcode application package (Finder -> Applications Folder -> Xcode -> Rt click, Show Package Contents. When I click over to Microphone, I see different apps listed, INCLUDING Xcode.

In my case this shows two applications which require additional permissions to get access to the camera, Terminal and Virtualbox (not sure what happens to browser, Facetime?) I do note, Xcode didn't make this list. If I go to Mac Apple Icon (Upper Left Corner) -> Systems Preferences -> Security and Privacy I can glean a lot of info. As others have noted, MacOS security / permissions issue. With a bit more testing I think it's something else. My initial thought was that this was an OpenCV issue. I know those words originate from the OpenCV library here. Stream or file Program ended with exit code: 255 OpenCV: camera failed to properly initialize! Error opening video The error I'm seeing when trying to run OpenCV from my MacOS development environment Is: In response to the suggestion to make sure ffmpeg see the device: $ ffmpeg -hide_banner -f avfoundation -list_devices true -i '' (I know this is similar to Cannot access camera with opencv on Mac Mojave but that question never went beyond a malformed plist file.) This is the compiler invocation: xcrun clang++ -x c++ -lc++ -o '$out' -std=c++11 -I/usr/local/include/opencv4 -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs -lopencv_videoio -lopencv_calib3d -lopencv_aruco -lopencv_xfeatures2d -lopencv_features2d -sectcreate _TEXT _info_plist ist piece of the puzzle am I missing? Here's the program I'm running: #include It implies it's requesting access, but I never get a dialog and no apps are listed under System Preferences > Security & Privacy > Camera. OpenCV: camera failed to properly initialize! OpenCV: not authorized to capture video (status 0), requesting. global /Users/steve/Documents/GitHub/ssteve-opencv/modules/videoio/src/backend_plugin.cpp (259) getPluginCandidates Found 0 plugin(s) for GSTREAMER

global /Users/steve/Documents/GitHub/ssteve-opencv/modules/videoio/src/backend_plugin.cpp (256) getPluginCandidates - /usr/local/lib: 0 global /Users/steve/Documents/GitHub/ssteve-opencv/modules/videoio/src/backend_plugin.cpp (248) getPluginCandidates VideoIO pluigin (GSTREAMER): glob is 'libopencv_videoio_gstreamer*.dylib', 1 location(s) global /Users/steve/Documents/GitHub/ssteve-opencv/modules/videoio/src/videoio_registry.cpp (185) VideoBackendRegistry VIDEOIO: Enabled backends(5, sorted by priority): FFMPEG(1000) GSTREAMER(990) AVFOUNDATION(980) CV_IMAGES(970) CV_MJPEG(960) This is the output when I run the program: OpenCV version 4.1.0-dev (I added NSMicrophoneUsageDescription in case it was trying to open the microphone along with the camera.) This app requires to access your microphone in order to access the camera I added -sectcreate _TEXT _info_plist ist ( which I learned about here) to the compile flags and when I run otool -X -s _TEXT _info_plist videotest | xxd -r (from the same blog post) it outputs: -? (I'm compiling and running the program under CodeRunner, not Xcode.) I've read that Mojave requires NSCameraUsageDescription in ist and I think I'm embedding it correctly in the binary. I'm unable to access the iMac camera from a command line OpenCV program.