i am new to Thnigworx studio, i want to create an AR, where in i will scan the Thingmark, after that 3 buttons will appear, after clicking on the button respective video should start playing. I have the video file in .mp4 format.

Hi @tdhote,

This can be implemented in many ways and one of the ways is shown below:

• Drag and drop 3 button widgets on 2D canvas. 
• For button-1, bind the click event to the video-1 widget 'play' property value. Also, bind click event to the video-2 and video-3 'pause' property value. Now, click on the JS which is next to click event and call the video1(); function.
• For button-2, bind the click event to the video-2 widget 'play' property value. Also bind click event to the video-1 and video-3 'pause' property value. Now, click on the JS which is next to click event and call the video2(); function.
• For button-3, bind the click event to the video-3 widget 'play' property value. Also bind click event to the video-1 and video-2 'pause' property value. Now, click on the JS which is next to click event and call the video3(); function.
• Drag 3 video widgets on to the 2D canvas, uncheck the visible property of all the video widgets and upload the resource in the Video Source as shown below:
• Create 3 application parameters with any desired namd in the Data panel and set it's value to false.
• Drag the binding icon next to the application parameter and drop it on the visible property of the video widget as shown below:
  
• Repeat the same for other two application parameters. Bind them to their respective video visible property.
• Click on Home.js and paste the below code:

• $scope.video1 = function() {
  $scope.app.params.visible = true;
  $scope.app.params.visible2 = false;
  $scope.app.params.visible3 = false;
  
  }
  $scope.video2 = function() {
  $scope.app.params.visible = false;
  $scope.app.params.visible2 = true;
  $scope.app.params.visible3 = false;
  }

  $scope.video3 = function() {
  $scope.app.params.visible = false;
  $scope.app.params.visible2 = false;
  $scope.app.params.visible3 = true;
  }

•  Save and test the experience.