ScreenPlay/ScreenPlayWindow/ScreenVideo.qml

import QtQuick 2.9
import QtAV 1.7

Rectangle {
    id: screenVideoPlayer
    color: "black"
    anchors.fill: parent
    property string videoPath
    onVideoPathChanged: {
        player.source = Qt.resolvedUrl("file:///" + videoPath)
        print("######### " + player.source)
        state = "playing"
        player.play()
    }

    property bool isPlaying: true


    //    onIsPlayingChanged: {
    //        if(isPlaying){
    //            player.play()
    //            state = "playing"
    //        } else {
    //            player.pause()
    //            state = ""
    //        }
    //    }
    //    Connections{
    //        target: wallpaper
    //        onPrepareDestroy:{
    //            player.stop();
    //            wallpaper.destroyWindow()
    //        }
    //        onVolumeChanged:{
    //            player.volume = wallpaper.volume
    //        }
    //        onIsPlayingChanged:{
    //            if(wallpaper.isPlaying){
    //                player.play()
    //            } else {
    //                player.pause()
    //            }
    //        }
    //        onDecoderChanged:{
    //            player.videoCodecPriority = [decoder]
    //        }
    //        onFillModeChanged:{
    //            if(fillMode === "Stretch"){
    //                videoOut.fillMode = VideoOutput2.Stretch
    //            } else if(fillMode === "PreserveAspectFit"){
    //                videoOut.fillMode = VideoOutput2.PreserveAspectFit
    //            }else if(fillMode === "PreserveAspectCrop"){
    //                videoOut.fillMode = VideoOutput2.PreserveAspectCrop
    //            }
    //        }
    //    }

    VideoOutput2 {
        id: videoOut
        anchors.fill: parent
        source: player
        opacity: 0
        opengl: true
        fillMode: VideoOutput.Stretch
    }

    MediaPlayer {
        id: player

        videoCodecPriority: ["CUDA", "VAAPI", "D3D11", "DXVA", "FFmpeg"]
        loops: MediaPlayer.Infinite
        volume: 0
        onStatusChanged: {
            print("STATUS: " + player.status)
            if(player.status === MediaPlayer.Loaded){
                print("init")
                mainwindow.init()
            }
        }
    }

    states: [
        State {
            name: "playing"
            PropertyChanges {
                target: videoOut
                opacity: 1
            }
            PropertyChanges {
                target: player
                volume: 1
            }
        }
    ]
    transitions: [
        Transition {
            from: ""
            to: "playing"
            reversible: true

            OpacityAnimator {
                target: videoOut
                duration: 300
                easing.type: Easing.InOutQuad
            }
            NumberAnimation {
                target: player
                property: "volume"
                duration: 300
            }
        }
    ]
}