Here's the link to where I found it: http://forum.xda-developers.com/show....php?t=2213945
Obviously i didnt make this app. Credit goes to Osama Ghareeb for hacking up the app and making this possible.
I tested this app on my n4 and it does indeed work.
I do not provide support for any issues you may or may not have. Please direct your questions by following the link I provided.
Credit goes out to CraftyCreature for finding another YouTube downloader which works perfectly. You can find the app here.
I also uploaded the app here too if you get too lazy to go to the actual site. Lol
As always I, OsamaGhareeb, nor anyone is responsible if this app blows up your phone, kills your family or burns down your house.
Without further or do..here's the app guys. Enjoy
Any version after v1 og youtube will be in fact called just youtube.apk for now one. That means you guys will have to install this app as a system/app. You will need to delete the original youtube apk and paste the new one in its place. Set permissions to rwx r r, save and reboot.