Can not download specific video from youtube

Browser: Chrome 50.0.2661 Windows 8.1 User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36 Extension: chameleon 6.30

before posting this i'm searching other post for the same problem and found some.

I cant download videos from youtube

Unable to find Video links of specific YouTube URLs

the first one already working

but the other break again