I don't know, maybe Hotspot Shield is being detected
You may want to try spoofing your IP using youtube-dl (do not use Hotspot Shield or any VPN).
Code:
youtube-dl --add-header X-Forwarded-For:144.140.108.23 "https://au.tv.yahoo.com/plus7/all-saints-season-1/-/watch/27065009/all-saints-season-1-episode-46/#page1"
If you are wondering whose IP it is, don't worry, it's the IP to the website of telstra.com (Australian ISP).