Strangely enough none of the website hosted services were working, not even some other popular extensions which just created shortcut to these websites.

I have had past problems like this that usually meant searching for other websites. This time only this extension did the job.

But this extension worked for some url links that are not recognisable. That's why I gave 5 star rating for now, because it works, is quick and intuitive no fuss. Apparently 720 is only for pro if the video was not already cached in the last 24 hours? What does that mean?