Extract, scrape specific contents from youtube

I need a script to be created. It should take 2 hours max. REQ: User Input a youtube video URL. The script extract content from 2 <div class> Problem: A button need to be clicked on youtube every time to generate those <div class> Solution: Simulate button click on page load, create a script to extract the <div class> Client side: Display extracted text contents in a textarea and offer possibility to download .TXT format or .SRT format Enhance everything with a simple HTML5 and "loading" effects. You can use: PHP / Javascript / Jquery / AJAX You're free develop in the languages above in a Robust way that will not overload the server even for thousands users. No more than 2 coded pages for this project. Keep it light, if you read through reply with "YT" I will myself test everything.