720P works flawlessly. This is the BEST current YT downloader. However they lie when saying 'Offers 1080p Full-HD downloads.' It does not deliver 1080P downloads. It *advertises* for you to *BUY* 1080P. Just a heads up to those who want 1080P w/o wasting time testing only to find out not available in this addon as-is. 720P meets my needs. So no biggie.