How to overlay transparent GIF from Gifer over a video

How to overlap a transparent GIF from Gifer.com over a video?

1. Click on to upload a background video
2. Double click inside the canvas to paste the GIF link copied online from Gifer.com
3. Wait until the transparent GIF image finish to load from the gifer.com website and display inside the canvas.
4. You can also upload a GIF image from your device in the same way
   
5. To resize the GIF, hold down the mouse. The GIF gets smaller before it is rendered on the entire canvas, and so on.
6. If you release the mouse button during the reduction, the GIF size will be frozen.
7. Mouse down to change the GIF position again.
8. When you are ready, record your video
9. Pause the video 
10. Download your video
    

Here is a video example showing a GIF image overlaying a video