{"download":{"MP3":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3m.mp3","MP4 (240p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3m-240p.mp4","MP4 (360p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3m-360p.mp4","MP4 (720p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3m-720p.mp4","MP4 (1080p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3m-1080p.mp4"},"srt":{"afr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/afr\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=E0FPgb9jb8V6IdZfBHVK2GT4vAM%3D","alb":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/alb\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=SbF7PoC2kPtVl1ZbZ7G09BWm9D8%3D","ara":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ara\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=AL2BDNEPUYFuSD661aBSwYSxzCs%3D","aze":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/aze\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=IzLT6BAqRfdQOLo9VAiHrBSJ1sg%3D","baq":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/baq\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=7FJbaXg1Jl%2B6m5clRlLyzuj3uXY%3D","bel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/bel\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=Nz3gMYyZY4sZbFk%2BMZ5%2F9%2Fv5qZE%3D","ben":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ben\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=3twD4HN4Bnl4I0oFW6s2rVzygkI%3D","bul":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/bul\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=gxodcytL5Q1QiO8w1mgOjONy15Y%3D","cat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/cat\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=h1tI7C4GsgAzHgPgq00hEdWFRCA%3D","chi_hans":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/chi_hans\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=uPs3dwvqFpi8Xl3O7uMx%2BpP%2FubY%3D","chi_hant":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/chi_hant\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=UseGj9I9yFLAtxJFBkkBacH4%2Bk4%3D","cze":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/cze\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=0t%2BX%2BOUd%2FhO3s2ZJSQbIEB4ugHc%3D","dan":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/dan\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=h%2Ffe8KiuLFn%2BveYUhJLWAstX6zs%3D","dut":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/dut\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=wQmsJVinlTodM7V%2FKuwFo1%2Flprs%3D","eng":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/eng\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=493TYze1rUgNygY4OrTr0SOhyKo%3D","epo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/epo\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=5wVuF9MaHxXx5Tr67FINx1ycelE%3D","est":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/est\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=sZhYWbM50g1qTBoCpRNwEKx9hug%3D","fil":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/fil\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=B5R3i2D0gnAX0wnG8MLcQg3OiIA%3D","fin":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/fin\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=sPO%2Fzv3ln5lWw58tQwMwaZ8K8to%3D","fre_fr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/fre_fr\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=JgohRmXVUwmVqAkfEgXfThcozJQ%3D","geo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/geo\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=vZ21lSbNgRK95upHtxO7xatraYk%3D","ger":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ger\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=jrrN0py7dzjvucZALXGFkYF5LBM%3D","gle":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/gle\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=wQqSTEBK9D6TxRZ6XDi3jhwYzBg%3D","glg":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/glg\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=BbzSKxh%2BUDYvjuQJxXb0eMPvonI%3D","gre":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/gre\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=vm1QVx0MThgHy3Q%2Fz9TbdepYKPY%3D","guj":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/guj\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=gqwkr6A2ckge9w9Seu3ufIDKGzk%3D","hat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/hat\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=T56ryeqJxwUTyBAwwEfT9n5MJG0%3D","heb":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/heb\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=hAvceavOcTWMwo8ZThZzzP%2BCy8s%3D","hin":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/hin\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=cF4Xjk4XdKA0Lq2zWlHmFnmWj2Y%3D","hun":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/hun\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=sOWLHa3Yc%2FmfXuomttVGGQX%2B1mE%3D","ice":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ice\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=sUapZ50d6YCXOI4QqhsIGDN1Jp4%3D","ind":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ind\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=6qZRsHCXjk65j6r3eGgOb%2BvRLo0%3D","ita":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ita\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=MgverbwsI6Qaasfvb50EvzyVcLU%3D","jpn":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/jpn\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=OtNwUzsmx3yrytXaAtVTLF3TWxY%3D","kan":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/kan\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=mZVuNKRJF7bOTVh95yIyOguOPlY%3D","kor":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/kor\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=j307EmTrZdtzit58DUu5BmMIx7Q%3D","lat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/lat\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=AedA03CjYAfpA6x7iiYXX7qruLg%3D","lav":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/lav\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=a%2BBQogaL6%2B%2BKBODFrQGjuHcUPGY%3D","lit":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/lit\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=jhUNYhWHWHsR54Qyn9uOCseSVLw%3D","mac":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/mac\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=B847nApQdb1FYPJMImSCygOlAz0%3D","may":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/may\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=vdz5ZBavn2eSW1bT%2F8tP4qrKQa4%3D","mlt":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/mlt\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=z2xXJe3XbxPC736c%2BcRKyiXnteY%3D","nor":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/nor\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=6PXxujdcR%2F9FrrfH3hVp6i%2Fy1%2FM%3D","per":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/per\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=ZGgJbKN7E5Idlcskuk58PzCHL%2F0%3D","pol":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/pol\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=75FNxTD6cuJP3DVNmn7ayZPMXjM%3D","por_pt":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/por_pt\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=%2F6YDAmCg0ZS4G13AyJFstmUiOP8%3D","rum":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/rum\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=lqXL2d%2BlYqFjvRcjBYXDER7NOM8%3D","rus":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/rus\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=LkRdzfAKpB346ceHKHPmyNGqLdo%3D","scc":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/scc\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=SB9sZjJdwiemlIARpO9GFaBtkCs%3D","scr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/scr\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=QQTTOl%2FQJZ%2BvkxMgGl2CvG7TzQo%3D","slo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/slo\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=n3gEgMTYUbXtjs%2BoeCBIxzubzq4%3D","slv":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/slv\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=yhNOszTLFT2Ar2bsqQiMzmJmod0%3D","spa":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/spa\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=ggOz%2FjcMmSS3D7PAPGKbALXy0ms%3D","swa":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/swa\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=sfp4Z%2FSNFbps3reJ4Luc5WQs3DE%3D","swe":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/swe\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=NQCnvaXb1Eql3FYBYWrkwB3gNw0%3D","tam":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/tam\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=cX%2BKioPSXVynYRnt0RD%2FBJh8jJ8%3D","tel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/tel\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=hwKKPpakXUNEHDJd9kFryoUWgeU%3D","ukr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ukr\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=hx23%2BlJDJ0Dnp60Tj%2FzwCXKAZTY%3D","urd":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/urd\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=5%2BcmqkBtocCpVra5N6WrVyADuHY%3D","vie":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/vie\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=r7aXk5NHVGRQ8Rfwi9bD19zNPdE%3D","wel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/wel\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=%2B4JoeZUsFMknS9WCJGKyJcw9YDY%3D","yid":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/yid\/week3m.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679612&Signature=%2FMmV915nFqGr7Fr34ikumDkb74o%3D"},"thumbnail":"http:\/\/cdn.cs50.net\/2012\/fall\/lectures\/3\/week3m.png","streamUrl":"rtmp:\/\/stream.cs50.net\/cfx\/st\/","survey50":"69","survey50Url":"https:\/\/apps.cs50.edx.org","title":"Week 3","author":"David J. Malan","video":{"240p":{"height":240,"width":426.66665649414,"framerate":29.97,"bitrate":188916,"duration":3853,"path":"2012\/fall\/lectures\/3\/week3m-240p.mp4"},"360p":{"height":360,"width":640,"framerate":29.97,"bitrate":636711,"duration":3853,"path":"2012\/fall\/lectures\/3\/week3m-360p.mp4"},"720p":{"height":720,"width":1280,"framerate":29.97,"bitrate":1624925,"duration":3853,"path":"2012\/fall\/lectures\/3\/week3m-720p.mp4"},"1080p":{"height":1080,"width":1920,"framerate":29.97,"bitrate":2624690,"duration":3853,"path":"2012\/fall\/lectures\/3\/week3m-1080p.mp4"}},"torrents":{"MP3":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3m.mp3","MP4 (240p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3m-240p.mp4","MP4 (360p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3m-360p.mp4","MP4 (720p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3m-720p.mp4","MP4 (1080p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3m-1080p.mp4"},"videoUrl":"http:\/\/cdn.cs50.net\/"}