Abbas - I have done this exact thing many times for various reasons. I've scraped websites to retrieve pictures, videos dollar amounts, items and details (items,prices, SKU, etc).
Relevant Skills and Experience
I've scraped websites for various purposes to retrieve and store information. Retrieving a video url and storing it should be no problem.
Proposed Milestones
$45 USD - Identify location of video url, parse it, and submit it to be stored.
It should be no problem for me to set something up quickly to scrape the page you need and retrieve a video url and insert that data into a database. Is this for a specific video website? I can likely get this done in just one day. Feel free to contact me with any questions.