Is there a way to change Camera frame rate?

diego-qt

Hello,
I am using my webcam as Camera in a QML application in Linux, but the frame rate is too slow and I can't seemingly change it.
I try to modify its camera.videoRecorder.frameRate property but I don't see real changes in the application. It still looks like 2 fps, event thought the video is smoother when I use VLC.
Also, I realized this frame rate property is no longer available in Qt 6.2 or 6.4 (I was seeing the 5.15 doc when coding), so does this means that it is no longer possible to change the frame rate of a Camera object? Is there a workaround?

I'll leave the code just in case but it is very simple:

Popup {
    id: cameraPopup
    property string sourceWebCam: QtMultimedia.availableCameras.length > 0 ?
QtMultimedia.availableCameras[0].deviceId : ""

    VideoOutput {
        id: viewfinder
        anchors.centerIn: parent
        height: cameraPopup.height * 0.75
        width: cameraPopup.width * 0.5
        source: camera
        flushMode: VideoOutput.LastFrame
        fillMode: VideoOutput.PreserveAspectCrop
    }
    
    Camera {
        id: camera
        deviceId: sourceWebCam
        captureMode: Camera.CaptureViewfinder
        videoRecorder.frameRate: 25
    }
}

I have also added some buttons to increase and decrease the frame rate property, and a console log shows me that it has effectively been changed, but I thought it was no use to add them in the code above.

JoeCFD

The whole module of Qt multimedia in Qt 6 was reworked. Better to use the latest Qt or stick to 5.15.