Hello,
I understand you are finding a person who will help you build an HTML5 based video player with dash.js. As a full stack developer for many years, I have done some projects like this before. I can help you to build one. As a new member to freelancer.com, I would like to help you build this at the lowest cost. I hope we will have a discussion about this soon, thank you very much.
Best regards,
Binh