generic extractor improvement: add a JavaScript beautifier

[eadmaster]

A JavaScript beautifier could help with websites obfuscating direct video URLs.

[yan12125]

I'm not sure why @dstftw closed this issue. AFAIK, tools like beautifiers help humans but not machines. In other words, they help programmars but not programs (youtube-dl), so there's no need to integrate the tools into youtube-dl.

[eadmaster]

the point is that some video hosting websites are obfuscating the direct video URL using javascript. So a JavaScript beautifier could expose/un-obfuscate the url for downloading with the generic extractor.

[jaimeMF]

You'll have to post an example url.
Implementing a general beautifier in python is probably a big task, it would be better if we had an example we can start with.

[eadmaster]

You could take this as an example:
http://www.rapidvideo.org/m612rwnlbv5k
(even if the website won't be supported officially due to licensed contents, it could be still supported using the generic plugin)

[jaimeMF]

We'd need to add a test for it, so please post a url from a site that doesn't infringe copyright.