How to add hard coded subtitles on the fly from a plain text file ?
Upload a video from your device
Record and pause just before the video speech begin
Copy subtitles from any text editor. to be processed as subtitles by 011,video tis text must start with an asterisk ‘ * ‘ and each phrase must end with punctuation character : ! or ? or , or .
Double click inside the canvas
paste the subtitles text inside the text field
Click few times on to change the text size. If you opt for a very big size make sure to choose a larger screen to display the whole phrase every time you turn the mouse wheel
As soon as you turn the mouse wheel for the first, the message “let’s Add subtitles” is displayed to make you ready to start
Continue to turn the mouse wheel to display each sentence on the fly, one by one
To make the subs easier to read try to move the cursor near the person who speak
from your device
and pause 
just before the video speech begin
inside the text field
to change the text size. If you opt for a very big size make sure to choose a larger screen 
to display the whole phrase every time you turn the mouse wheel