Hello, I understand what you are asking. I have been doing this in other sites too. I am from Bangladesh, so can do this easily. Hope we will work together. Here is a sample, you are asking ( আমার ইংরেজি সাবটাইটেল ফাইল আছে, বাংলায় অনুবাদ করতে চাই।) Hope we will work together ☺