Youtube video cannot download completely

800MB of video files downloaded 37MB, and then aborted.

My device informations:

Browser: Chrome 58.0.3029 Mac OS X 

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 

Extension: chameleon 7.36

And the  link to the file that can not be downloaded completely:

https://r1---sn-i3beln7r.googlevideo.com/videoplayback?mime=video%2Fmp4&key=yt6&expire=1495866993&gcr=hk&initcwndbps=7538750&requiressl=yes&signature=C656C4D67D40B9A033D7039709AE69B16960BC9B.4CE19DC8F080909FB7AADA022BE00355218271FE&sparams=dur%2Cei%2Cgcr%...