Its not difficult to download youtube video using different downloader, but it is different and may be too much than other. Just uisng a single command you will be able to download video from youtube channel.
Step 1: First open your linux terminal (CTL +ALT +T ) and paste
sudo apt-get install youtube-dl to install command line mode downloader for YouTube. After complete this process your system is now ready to download youtube video.
Step 2:It is time for download video , so just type
youtube-dl YouTube-video-link [ e.g :
youtube-dl http://www.youtube.com/watch?v=rn_YodiJO6k ] and press enter. WOW it work right ?? So enjoy your downloading….