E.M. Youtube Video Download Tool :
Free Download Total Video Downloader for Mac

EffectMatrix .Inc guarantees that E.M. Youtube Video Download Tool is 100% CLEAN, which means it does not contain any form of malware, including spyware, viruses, trojans and backdoors.
How to convert & download youtube video?
Please visit FAQs.
How to Download YouTube Videos Mac?

Please use Total Video Downloader For Mac and visit the tutorial.