How to write text over a video inside a small box ?

How to write text over a video inside a small box ?

1. Upload a video  which will be displayed as background. Set on the loop attribute if the video is short.
2. Copy a long text from any editor available on your device.
3. Click twice on the upper left corner of the box you want to write inside
4. Paste the text    inside the text field. Click few times on to make the text bigger
5. Then click once on the down right corner of the box where you want to display your text 
6.   Start to Record      the text will display in scrolling mode
7. When the display is ended the video would pause by itself 
8. Download your video with text embedded   

Here is a video sample of “text render inside a school board’