Highest Quality Youtube Grab?

[A Former User]

Someone has an original song on YouTube we wanted to use we now have the permission to use it however the artist doesn't have the original just the video on YouTube. I can modify it just to be Audio in my NLE or DAW so that part doesn't matter but I need the site/software that will give me the highest quality. This is for a promotional video to be played in a large stadium conference so quality is paramount.

[A Former User]

Used some random website. Seems to be fine through the Studio Monitors.

[scottalanmiller]

KeepVid is what I use. No idea if it is good, though.