Lets Make this even simpler, shall we ? I had the same question in mind and done some research on GOOGLE. This is online downloader exclusively for videos from xvideo.org.
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No matter which browser you use, you can always view source code of any web page. This source code only you have to use here. Please open the page and you wil find all the instructions inside. Downloading videos from XVIDEO was never that simpler, right ?