Hi Alexander,

Fascinating. I can reproduce this. Starting from Terminal doesn’t crash (no 
matter whether with ‘open’ or the binary inside the bundle directly), starting 
camera.app via Finder does. Starting the camera binary inside the camera.app 
bundle via Finder does not crash, it asks for permission and if rejected 
nothing special happens (no video, obviously, also no crash).

The multimedia/declarative-camera example however does start correctly in all 
cases. It doesn’t ask for microphone access, which the multimediawidgets/camera 
example does when launched from Terminal.

The stack trace I get with the widgets example goes to

12  com.apple.avfoundation              0x00007fff30bbe7a5 -[AVCaptureSession 
addInput:] + 71
13  org.qt-project.QtMultimedia         0x000000010ec99f00 
AVFCameraSession::attachAudioInputDevice() + 176
14  org.qt-project.QtMultimedia         0x000000010ec9a190 
AVFCameraSession::updateAudioInput() + 128 (avfcamerasession.mm:487)
15  org.qt-project.QtMultimedia         0x000000010ec97dd0 
AVFCameraService::setAudioInput(QPlatformAudioInput*) + 624 
(avfcameraservice.mm:146)
16  org.qt-project.QtMultimedia         0x000000010ec65c98 
QMediaCaptureSession::setAudioInput(QAudioInput*) + 56 
(qmediacapturesession.cpp:204)

before disappearing into com.apple.Foundation. Perhaps that helps us figure out 
what’s going on.

From those observations I’d either way think that things should work as you 
expect them to (ie. nothing special needs to be done to trigger those 
permission dialogs).

Filed a JIRA ticket at

https://bugreports.qt.io/browse/QTBUG-97408


Thanks,
Volker



> On 9 Oct 2021, at 22:08, Alexander Carôt <alexander_ca...@gmx.net> wrote:
> 
> P.S.: see below – in that regard I compiled the camera example (Qt6.2) and 
> ran it via clicking on the app icon (rather than running it from the console 
> which per se has cam access). Also here it did not ask for allowing cam 
> access and then the app crashed. Can anyone reconstruct this ?
> 
> 
> --
> http://www.carot.de
> Email : alexan...@carot.de
> Tel.: +49 (0)177 5719797
> 
> 
>> Gesendet: Samstag, 09. Oktober 2021 um 11:47 Uhr
>> Von: "Alexander Carôt" <alexander_ca...@gmx.net>
>> An: "qt qt" <interest@qt-project.org>
>> Betreff: [Interest] OSX security – allow dialogue
>> 
>> Hej all,
>> 
>> not sure if this is a bug on my end, a bug in Qt or even a bug in OSX:
>> 
>> When I deploy a new release of my software (which uses audio and video 
>> capture) after installation on a user's machine it asks for  permissions to 
>> access the mic and the camera. When not enabled sound capture does not work 
>> and video even crashes – when enabled all is fine. So this dialogue is 
>> really important to the user. 
>> 
>> However, in some cases the new deployed version does not ask this question 
>> anymore and as a result the user manually has to change the security 
>> settings. Otherwise they stick to the previous version.
>> 
>> For some reason I discover this again after deploying with the new Qt6.2 but 
>> (as written above) I don't know if it's related.
>> 
>> Can anyone help in this regard ? Any hint appreciated because for almost one 
>> year I am really confused about this. Maybe there is a way to force the OS 
>> to enable this dialogue ?!
>> 
>> Thanks a lot in advance,
>> best
>> 
>> Alex
>> 
>> --
>> http://www.carot.de
>> Email : alexan...@carot.de
>> Tel.: +49 (0)177 5719797
>> 
>> _______________________________________________
>> Interest mailing list
>> Interest@qt-project.org
>> https://lists.qt-project.org/listinfo/interest
>> 
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