Video URL Cloaking.

Hello, Can someone tell us How can we get this Video URL Encryption Script?
Like the one on Kissanime, AnimeHeaven. When they use JW Player and the link be like

https://redirector.googlevideo.com/videoplayback?requiressl=yes&id=35b0aa74a16f0a82&itag=22&source=webdrive&app=texmex&ip=2001:19f0:ac00:aee:5400:ff:fe21:4b3d&ipbits=32&expire=1464305070&sparams=requiressl,id,itag,source,ip,ipbits,expire&signature=873C76CE42BCA33288B28366E509E7C6CB2B373F.8F9AEF4E9038A2E5D8D614CDAD41C34C6391D3AA&key=ck2&mm=30&mn=sn-o097znl6&ms=nxu&mt=1464290475&mv=u&nh=IgpwcjAxLnNqYzA3KgkxMjcuMC4wLjE&pl=48

and like this

123movies.to/film/x-men-apocalypse-12338/watching.html

And what is the Pros and Cons of using this Script?

It seems like a 403 error,which means that you need an access to your site.

Check for the URL errors and make sure you're specifying an actual web page file name and extension, not just a directory. Most websites are configured to disallow directory browsing so a 403 Forbidden message when trying to display a folder instead of a specific page is normal and expected.

clear your browser's catche,issues with a cached version of the page you're viewing could be causing 403 Forbidden issues.

Contact the website directly, just revisit the page on a regular basis until the problem is fixed.