Hello, I wanted to know one thing, how can we give video title by doing ACO on the image and how to

You should not assume that we know what ACO means. I do not know, and googling it does not bring up anything usable. 

If you mean to design special rolling titles for video, you will need to produce MOGRT files. That, however, is not open to everyone, and you can't apply for an invitation as of my knowledge.