MediaPlayer often does not play video

Mark81

I have this simple code:

ApplicationWindow {
    width: 1920;  height: 1080
    visible: true
    visibility: "FullScreen"

    MediaPlayer {
        id: mediaPlayer
        videoOutput: videoOutput
        source: "file:///home/user/test.mov"

        onMediaStatusChanged: {
            if (mediaPlayer.mediaStatus == MediaPlayer.LoadedMedia) play();
        }

        onErrorOccurred: { console.log(mediaPlayer.errorString) }
        onPlaybackStateChanged: { console.log(mediaPlayer.playbackState) }
    }

    VideoOutput {
        id: videoOutput
        anchors.fill: parent
    }
}

Usually it works, but sometimes (or often...) it does not play the video. I always get 1 as playbackState and never get an error.
When it happens, it does not play the video for several consecutive runs. Then, it come back and works as expected....

How to understand why it does not play the video?
Qt 6.2.0 and Ubuntu 20.04.

SGaist

Hi,

Is it always the same video that triggers this ?

Mark81

@SGaist No, I tried with different videos with different codes and formats. Same behavior. It's unreliable.

SGaist

I would first update to 6.2.1 next, are these files stored in a specific location ?

Do you have the same issue if you play them with GStreamer directly ?

JoeCFD

@Mark81 Multimedia is reworked in Qt 6.2 from the recent talk of Lars Knoll and could have a lot of issues. I would not use it now. I do not use it and still apply gstreamer for playing videos.