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问题描述如下：
时间：2012-03-13 11:40:51
网址：http://o-o.preferred.nuq04s10.v4.lscache2.c.youtube.com/videoplayback?sparams=algorithm,burst,cp,factor,id,ip,ipbits,itag,source,expire&fexp=904542,906335&algorithm=throttle-factor&itag=35&ip=65.0.0.0&burst=40&sver=3&signature=CE5702AF24F48EA7B4A5B4F0401985C1D1D9A8BD.42C21A1E3605ACA901FF9116F43D4AD53E26FC59&source=youtube&expire=1331633139&key=yt1&ipbits=8&factor=1.25&cp=U0hSRlZOUV9IU0NOMl9OSFVCOmRwdEpXaDhWMkFa&id=b136ab876ff2a8a9&cm2=0
原因：不能下载
描述：不能录制，完整请求头如下：
GET http://o-o.preferred.nuq04s10.v4.lscache2.c.youtube.com/videoplayback?sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cexpire&fexp=904542%2C906335&algorithm=throttle-factor&itag=35&ip=65.0.0.0&burst=40&sver=3&signature=CE5702AF24F48EA7B4A5B4F0401985C1D1D9A8BD.42C21A1E3605ACA901FF9116F43D4AD53E26FC59&source=youtube&expire=1331633139&key=yt1&ipbits=8&factor=1.25&cp=U0hSRlZOUV9IU0NOMl9OSFVCOmRwdEpXaDhWMkFa&id=b136ab876ff2a8a9&cm2=0 HTTP/1.1
Accept: */*
Accept-Language: zh-CN
Referer: http://s.ytimg.com/yt/swfbin/watch_as3-vfltIMnSN.swf
x-flash-version: 11,1,102,62
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)
Host: o-o.preferred.nuq04s10.v4.lscache2.c.youtube.com
Proxy-Connection: Keep-Alive
Cookie: VISITOR_INFO1_LIVE=ysuKZf7W3BU; PREF=f1=10000000&fv=11.1.102; use_hitbox=d5c5516c3379125f43aa0d495d100d6ddAEAAAAw; recently_watched_video_id_list=670ba1356870418091a86626a2c9dbf9WwMAAABzCwAAAHNUYXJoMl95cUtrcwsAAABLVWlXMXBtSk9wQXMLAAAAMThPTXdraHY1YlU=; ACTIVITY=1331609605791; wide=1
提问人：119143125@***.com
解答：如果你是使用了VPN上网，影音盒子可能是不支持的。
影音盒子，最酷、最强大的网络音视频资源抓取、下载、录制工具
解答时间：2012-03-17 11:29:44
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