$prefix = '$1' if ($user_prefix =~ m/^(+)$/ or die ' Error: Illegal characters in filename prefix ' ) # Declare the user defined file name prefix if specified My $url = '$1' if ($user_url =~ m/^(+)$/ or die ' Error: Illegal characters in YouTube URL ' ) # Collect the URL from the command line argument # Initialize retry loop and resolution variables # making changes or you are building your own YouTube download script. Use this to reverse engineering this code if you are This option simply puts '_hd1080.mp4' or similar at the # Option: do you want the resolution of the video in the file name? zero(0) is # any reason? Do not make this too high as a reoccurring error will just hit # Option: How many times should the script retry the download if wget fails for # The script will always prefer to download the highest resolution video format # definition 640x380 and 'itag=17' which is mobile resolution 144p (176x144). # script will look for the next resolution. # multiple values just in case the highest quality video is not available, the

# Option: what visual resolution or quality do you want to download? List

# work on the most players like Android, iPod, iPad, iPhones, VLC media player # in the YouTube URL so you can choose mp4, webm, avi or flv. # Option: what file type do you want to download? The string is used to search

# $2 Prefix to the file name of the video (optional) # OS Support : Linux, Mac OSX, OpenBSD, FreeBSD or any system with perl # ,:, Download YouTube videos and music using wget First, if you don't have wget, install it: sudo apt-get install wget

Download paid videos from youtube