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QVideoProbe not connecting to QMediaPlayer

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  • T Offline
    T Offline
    Teermit
    wrote on last edited by
    #1

    Hello, I do everything as described in the "documentation":http://qt-project.org/doc/qt-5.0/qtmultimedia/qvideoprobe.html#details, the video plays, but the probe is not connecting

    @void MainWindow::initVideo()
    {
    QWidget videoPlaceholder = this->findChild<QWidget>("videoPlaceholder");
    QGridLayout targetLayout = videoPlaceholder->findChild<QGridLayout>("gridLayout");
    this->videoSurface = new QVideoWidget(videoPlaceholder);
    targetLayout->addWidget(this->videoSurface);
    this->player = new QMediaPlayer(this);

    QUrl videoURL = QUrl::fromLocalFile&#40;this->inputVideo&#41;;
    this->player->setMedia(videoURL);
    this->player->setVideoOutput(this->videoSurface);
    this->videoSurface->show();
    
    this->probe = new QVideoProbe(this);
    qDebug() << probe->setSource(this->player);
    qDebug() << probe->isActive();
    connect(probe,SIGNAL(videoFrameProbed(QVideoFrame)),this,SLOT(frameCaptured(QVideoFrame)));
    
    this->player->play();
    

    }

    void MainWindow::frameCaptured(const QVideoFrame &frame)
    {
    qDebug() << "get frame!"; //never called =(
    }@

    What did I do wrong?

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    0
    • J Offline
      J Offline
      jmimi
      wrote on last edited by
      #2

      I have the same problem.
      In my code "ctrl" is null, so according to qt code, there is no signaling.
      @bool res = videoProbe->setSource(mediRecorder);
      QMediaObject *obj = mediaRecorder->mediaObject();
      QMediaService *srv = obj->service();
      QMediaControl ctrl = srv->requestControl<QMediaVideoProbeControl>();@

      Do you find any solution?

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      0
      • Y Offline
        Y Offline
        youfeis
        wrote on last edited by
        #3

        Same here, using QMediaPlayer on windows, and probe->setSource(mediaplayer) simply returns false.

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