There are many, Free or Paid iOS Apps to download Youtube Video. Most of them worked the same, where you paste the URL into the built in browsers, press and hold the play button to download.
However most of these Apps only download the low / 360P version of the file. I wanted to save the full 720P or 1080P video, and have yet to find an Apps that does it. Anyone know of any Apps/ Ways to download the Youtube HD video on iPhone?
Edit: I try using KeepVid.com, the resulted link only allows me to play the video file in Safari, and not save it.