Create a shell script for extracting Youtube direct download URLS from Youtube URL

Hi everybody, I need someone to implement a .sh script that, given a youtube URL such as: [login to view URL] Will return a list of direct download links for the video in the following format: <format extension>\t<resolution>\t<url> For example: the script should run like this: bash [login to view URL] [login to view URL] mp4 720 [login to view URL],911921,909717,932295,936912,936910,923305,936913,907231,907240,921090&upn=KW1Pqj3lAbA&burst=40&algorithm=throttle-factor&sparams=algorithm,burst,clen,dur,factor,gir,id,ip,ipbits,itag,lmt,source,upn,expire&signature=F90C2F2165ADC50A63D804110C0E664BEC80EF44.CB49513C75D0B05E35F795D1E4BEA9F040FAE9E7&key=yt5&ip=91.117.35.94&sver=3&factor=1.25&dur=242.000&lmt=1387078336870000&itag=136&source=youtube&ms=au&id=139cec1d2bcb53e5&mv=m&mt=1387488195&gir=yes&ratebypass=yes&keepalive=yes&title=Happy%20Tree%20Friends%20-%20Hole%20Lotta%20Love%20(Part%201) mp4 1080 .... In order to do this, there is a lot of open source code to base in. For example, [login to view URL] is a firefox plugin that uses Javascript to achieve this task. Namely, the folder: iaextractor/lib/[login to view URL] has Javascript code that does exactly this. But it need it done in shell script. It should pretty much be a matter of string manipulation with sed / perl /awk and, if necessary, performing some calls with CURL. You should only use curl, sed, awk, perl and other basic UNIX commands. Please do not use any fancy commands (in any case it is not necessary). The script will be running in OS X and if you can test it in OS X 10.9 will be an extra. But if you can make it work in Ubuntu is good enough for me. If you can get it working to retrieve all possible mp4 links that is good enough too. I will release full payment for this if you can do this in a shorter time. First half of the milestone will be released if the script is able to build at least 1 link for directly downloading a video in mp4, in any resolution, tested with several videos. Second half released after project is completed. I have been working with this a bit so I might be able to help you if necessary. Please bid only if you have true experience with shell scripting. Youtube scrapping experience is most welcome. Deadline: as soon as possible. This shouldn't take more than 1-2 days. Thanks.