QMediaRecorder not working - Unable to record from webcam

Solidus

Hello all.

I've been searching everywhere for a solution to this and I've seen some threads about this problem but without a solution.

I'm trying to record a video from two different webcams that I have on my computer. I am able to show the video for both of them but the problem is recording. When I try it nothing happens. No file is saved and the states also never change. Bellow I have attached the code that loads the cameras and the code that loads the QMediaRecorders. I also tried with just one of the cameras and it still doesn't work. The QT example "camera" does not work as well, the option for recording is always disabled.

@void MainWindow::setCamera() {
foreach (const QCameraInfo &cameraInfo, QCameraInfo::availableCameras()) {
qDebug() << "Device Name: " + cameraInfo.deviceName();
qDebug() << "Device Description: " + cameraInfo.description();
if (cameraInfo.description() == "Integrated Camera")
camera1 = new QCamera(cameraInfo);
else if(cameraInfo.description() == "QuickCam for Notebooks Pro")
camera2 = new QCamera(cameraInfo);
}
camera1->setViewfinder(ui->camScreen1);
camera2->setViewfinder(ui->camScreen2);
camera1->setCaptureMode(QCamera::CaptureVideo);
camera2->setCaptureMode(QCamera::CaptureVideo);
camera1->start();
camera2->start();

qDebug() << camera1->status();
qDebug() << camera1->state();
qDebug() << camera1->error();

}

void MainWindow::setVideoEncoding() {
recorder1 = new QMediaRecorder(camera1);
recorder2 = new QMediaRecorder(camera2);

QVideoEncoderSettings settings = recorder1->videoSettings();
settings.setCodec("video/mpeg2");
settings.setQuality(QMultimedia::LowQuality);
settings.setResolution(640,480);
settings.setFrameRate(30.0);

recorder1->setVideoSettings(settings);
recorder2->setVideoSettings(settings);

recorder1->setMetaData(QMediaMetaData::Title, QVariant(QLatin1String("Record1")));
recorder2->setMetaData(QMediaMetaData::Title, QVariant(QLatin1String("Record2")));

recorder1->setOutputLocation(QUrl::fromLocalFile&#40;QCoreApplication::applicationDirPath(&#41; + "/" + "testvideo1.mp4"&#41;&#41;;
recorder2->setOutputLocation(QUrl::fromLocalFile(QCoreApplication::applicationDirPath(&#41; + "/" + "testvideo2.mp4"&#41;&#41;;

qDebug(&#41; << recorder1->status();
qDebug() << recorder1->state();
qDebug() << recorder1->error();

}@

When I press the record button:

@void MainWindow::toggleRecord(bool startRecord) {
if(startRecord) {
recorder1->record();
recorder2->record();
}
else {
recorder1->stop();
recorder2->stop();
}

qDebug() << recorder1->state();
qDebug() << recorder1->status();
qDebug() << recorder1->error();

qDebug() << recorder2->state();
qDebug() << recorder2->status();
qDebug() << recorder2->error();

}@

The state, status and error are as follows (every time I call them)

Camera:
State: QCamera::UnavailableStatus;
Status: QCamera::ActiveState;
Error: QCamera::NoError.

Recorder:
State: QMediaRecorder::UnavailableStatus;
Status: QMediaRecorder::StoppedState;
Error: QMediaRecorder::NoError.

Thanks in advance for your time.

Solidus

It seems the problem is that the recording is still not working for windows due to a plugin change not yet fully implemented, as explained "here":http://qt-project.org/doc/qt-5/qtmultimedia-windows.html

I tested it on a mac and it worked fine. To fix this on windows I used the "QtMEL library":http://kibsoft.ru/.