title: How to play a video using video 5.12 qt qml?
body: <p>I want to play a video with the button of play, pause,  forward the video in 10 seconds, and back the video using qml, but I don't know how.</p>
  <p>something like this:</p>
  <pre><code>import QtQuick 2.12
  
  import QtQuick.Window 2.12
  
  import QtMultimedia 5.12
  
  import QtQuick.Controls 2.0
  
  import QtQuick.Layouts 1.12
  
  Window {
      visible: true
      width: 840
      height: 680
      title: qsTr(&quot;Hello World&quot;)
  
      ColumnLayout{
          Video {
              id: video
              width : 600
              height : 600
              source: &quot;a.avi&quot;
  
          }
          RowLayout{
              Button {
                  width: 80
                  height: 80
                  text: &quot;play&quot;
                  onClicked: {video.play()}
              }
              Button {
                  width: 80
                  height: 80
                  text: &quot;pause&quot;
                  onClicked: {video.pause()}
              }
              Button {
                  width: 80
                  height: 80
                  text: &quot;foward&quot;
                  onClicked: {video.foward()}
              }
              Button {
                  width: 80
                  height: 80
                  text: &quot;back&quot;
                  onClicked: {video.back()}
              }
          }
      }
  }
  </code></pre>