How to Download Youku Video on a Mac Without Additional Software
NEW (Updated 2015-12-07)
The method below doesn't work anymore.
Copy the Youku video link and open a new tab in browser.
Adding xia before youku and hit return key (xia means download in Chinese)
For example:
http://v.youku.com/v_show/id_XNzE5NTkxNTg0.html?firsttime=62&from=y1.9-4
# will be changed to
http://v.xiayouku.com/v_show/id_XNzE5NTkxNTg0.html?firsttime=62&from=y1.9-4
NEW (Updated 2015-09-25) :
A new page will appear and you have to watch the AD (15 seconds) before the download link will be revealed.
Just click any link as shown in the screenshot below
After that another page will shown and save the link as a file to the Mac