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Found not working imports: QtMultimedia is not installed

  • import QtQuick 2.6
    import QtQuick.Controls 1.5
    import QtQuick.Dialogs 1.2
    import QtMultimedia 5.6
    import QtQuick.Layouts 1.3
    Item {
        width: 640
        height: 360
        Camera {
            id: camera
            imageProcessing.whiteBalanceMode: CameraImageProcessing.WhiteBalanceFlash
            exposure {
                exposureCompensation: -1.0
                exposureMode: Camera.ExposurePortrait
            flash.mode: Camera.FlashRedEyeReduction
            imageCapture {
                onImageCaptured: {
                    photoPreview.source = preview  // Show the preview in an Image
        VideoOutput {
            source: camera
            anchors.fill: parent
            focus : visible // to receive focus and capture key events when visible
        Image {
            id: photoPreview

    I just uinstalled Qt 5.5.1 and installed Qt 5.6 (but above is the new project created in Qt 5.6). I added
    QT += multimedia
    in my pro file. I use MSVC 2013 (as alway when using Qt), Windows 7. It builds program and when I click Run, it works, although it shows in Application Output: 3x failed to access to the graph builder. I could ignore it, but I am not able to access to Design mode ("Cannot open this QML document beacuse of an error in the QML file"). Could you help me to solve it?

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