Streaming of some YouTube videos don't work anymore

[licson]

According to my test, YouTube has changed the way of streaming on some popular videos. The old streaming method works on them a few days ago. I'm trying to reverse-engineer the new streaming method they use and fix this soon.

Video tested that don't work now but do work before:

• http://www.youtube.com/watch?v=ASO_zypdnsQ
• http://www.youtube.com/watch?v=9bZkp7q19f0

As of now, node-YouTubeStreamer will return a 403 response on these videos.

[licson]

AS of now, I still cannot figure out what's the problem behind this. I may need to get some idea from the youtube-dl project. Still very confusing with Python...