I like this

it works on youtube videos

Very, very nice extension. Easy to use, does what you need it to do and does it well. Highly recommended!

It just doesn't work

EXCELLENT and many many thank you's and a very merry Christmas, a happy Hanukkah and a blessed Ramadan Brightest Holiday!

Super

Besides some UI issues, would recommend

awesome

I've been using it for years. Every now and then when YouTube changes it's download infrastructure, it takes a few days to a couple of months before it works again. But in general it is very recommendable, does perfectly and easily what it should.