see below - as a first acceptable temporary solution I am constantly detecting the actual resolution and if it does not match the one I adjusted I simply restart the cam.
So - at least for now the issue is fixed. Best Alex -- http://www.carot.de Email : alexan...@carot.de Tel.: +49 (0)177 5719797 > Gesendet: Donnerstag, 19. Juli 2018 um 23:27 Uhr > Von: "Alexander Carôt" <alexander_ca...@gmx.net> > An: "qt qt" <interest@qt-project.org> > Betreff: [Interest] QCamera resolution problem > > Hello all, > > I have a problem with setting the resolution of external USB-webcam on OSX. > > I initialize my cam like this: > > > void soundjack::startVideo(int index){ > QCameraViewfinderSettings cameraSettings; > QSize resolution(640,480); > cameraSettings.setResolution(resolution); > > camera = new QCamera(availableCameras[index]); > camera->setCaptureMode(QCamera::CaptureStillImage); > camera->setViewfinderSettings(cameraSettings); > > imageCapture = new QCameraImageCapture(camera); > > camera->setViewfinder(ui->viewfinder); > connect(imageCapture, &QCameraImageCapture::imageCaptured, this, > &soundjack::processImage); > > camera->start(); > } > > and I stop my cam like this: > > void soundjack::stopVideo(){ > camera->stop(); > > delete camera; > delete imageCapture; > } > > > When I am running this code on my MacBook Pro withe the inbuilt Facetime cam > everything works out fine. However, with two external USB-webcams on the same > machine I have the following problem: > > When I initialize the cam the first time all is working fine but when > stopping it or changing to the inbuilt cam and then relaunching it for the > second time the resolution is set to 1280 x 720 instead of 640 x 480. > > Stopping it again or changing to the inbuilt cam and then launching it for > the third time leads to the desired 640 x 480. > > In other words: Every other attempt works. > > Can anyone help how to get rid of this problem ? > > Thanks in advance, > best > > Alex > > > -- > http://www.carot.de > Email : alexan...@carot.de > Tel.: +49 (0)177 5719797 > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest > _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
