这很容易。只需将youtube下载网址中的googlevideo.com替换为c.docs.google.com
即可
感谢您提出这个问题。经过一段时间的搜索我就知道了。
YOUTUBE下载网址:
http://r2---sn-h557snee.googlevideo.com/videoplayback?sver=3&expire=1413317317&mv=m&mt=1413295596&ms=au&id=o-AFQYWPcu_Mgj7ApyBmoMopG3mkbxQgKxFOa3It4kBoSm&mm=31&source=youtube&initcwndbps=1216250&mime=video/mp4&ip=27.251.66.2&fexp=3300013,3300112,3300134,3300137,3300164,3310366,3310708,3312224,907257,916941,927622,930666,931983,932404,934030,936118,936222,946013,947209,952302,953801,953903&itag=18&sparams=id,initcwndbps,ip,ipbits,itag,mime,mm,ms,mv,ratebypass,source,upn,expire&signature=49C37B73B3253F473F15AF6F8292D1628B63194C.7B10B7E983B7F4288933EBB0E821C84169653F0C&ratebypass=yes&ipbits=0&key=yt5&upn=KW7cc7l_RHs&title=Aaranya%20Kaandam
CONVERTED URL
http://r2---sn-h557snee.c.docs.google.com/videoplayback?sver=3&expire=1413317317&mv=m&mt=1413295596&ms=au&id=o-AFQYWPcu_Mgj7ApyBmoMopG3mkbxQgKxFOa3It4kBoSm&mm=31&source=youtube&initcwndbps=1216250&mime=video/mp4&ip=27.251.66.2&fexp=3300013,3300112,3300134,3300137,3300164,3310366,3310708,3312224,907257,916941,927622,930666,931983,932404,934030,936118,936222,946013,947209,952302,953801,953903&itag=18&sparams=id,initcwndbps,ip,ipbits,itag,mime,mm,ms,mv,ratebypass,source,upn,expire&signature=49C37B73B3253F473F15AF6F8292D1628B63194C.7B10B7E983B7F4288933EBB0E821C84169653F0C&ratebypass=yes&ipbits=0&key=yt5&upn=KW7cc7l_RHs&title=Aaranya%20Kaandam