我正试图从任何youtube视频中获取* .flv的网址。我使用wireshark来分析流量。我还有一个firefox插件，可以从youtube下载视频。它有一个功能，我可以看到* .flv视频的直接网址。
到目前为止，我得到了这个：
http://r1---sn-i5onxoxu-i5hl.c.youtube.com（这是主持人）这与下载者网址相匹配。
接着是
“videoplayback？”然后我猜一些视频特定的东西。这正是我无法弄清楚的。下载程序从主机开始，然后是其他内容。
我所做的就是捕捉包裹。然后我在http请求中搜索“/ videoplayback？...”。我刚刚将它添加到主机但它不起作用。
有人能帮助我吗？主持人后我需要放什么？我在哪里可以找到它？
答案 0 :(得分：3)
这是我到目前为止所发现的 我观看了相同的视频Wireshark - Using Dumpcap to capture to disk by Mike Pennacchi。
捕获数据包并保存文件后，应用以下显示过滤器：
http.request.full_uri包含“范围”
我的档案中显示3个包：
735个
2708
4615
选择第一个数据包，转到数据包详细信息并展开超文本传输协议。
右键单击完整请求URI [截断]：并选择复制 - ＆gt;将URL值并粘贴到文本文件中
从其他数据包中复制url（参见注释），你会得到一个与此类似的列表：
http://r2---sn-5hn7zn7k.c.youtube.com/videoplayback?algorithm=throttle-factor&burst=40&cp=U0hWR1FUTl9GT0NONl9JTlJBOlBwSjNTRTA0azVw&cpn=B84QkSbXB7EAaDfs&expire=1372190015&factor=1.25&fexp=935500%2C910100%2C929227%2C916613%2C921047%2C928201%2C901208%2C929123%2C929915%2C929906%2C929907%2C929125%2C925714%2C929917%2C929919%2C931202%2C912512%2C912515%2C912521%2C906838%2C904488%2C906840%2C931910%2C931913%2C932227%2C904830%2C919373%2C933701%2C904122%2C900816%2C926403%2C909421%2C912711%2C935102&id=6ca6b1fa4c861ff9&ip=my ip address&ipbits=8&itag=34&keepalive=yes&key=yt1&ms=au&mt=1372168727&mv=m&newshard=yes&range=13-1781759&ratebypass=yes&signature=D8D28CBCD4AAC5F46901397219F62CB04D3C6290.114129F2F93249AC4D88DF184C7D47C9929B3232&source=youtube&sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&sver=3&upn=9RmkbstttTM http://r2---sn-5hn7zn7k.c.youtube.com/videoplayback?algorithm=throttle-factor&burst=40&cp=U0hWR1FUTl9GT0NONl9JTlJBOlBwSjNTRTA0azVw&cpn=B84QkSbXB7EAaDfs&expire=1372190015&factor=1.25&fexp=935500%2C910100%2C929227%2C916613%2C921047%2C928201%2C901208%2C929123%2C929915%2C929906%2C929907%2C929125%2C925714%2C929917%2C929919%2C931202%2C912512%2C912515%2C912521%2C906838%2C904488%2C906840%2C931910%2C931913%2C932227%2C904830%2C919373%2C933701%2C904122%2C900816%2C926403%2C909421%2C912711%2C935102&id=6ca6b1fa4c861ff9&ip=my ip address&ipbits=8&itag=34&keepalive=yes&key=yt1&ms=au&mt=1372168727&mv=m&newshard=yes&range=1781760-3563519&ratebypass=yes&signature=D8D28CBCD4AAC5F46901397219F62CB04D3C6290.114129F2F93249AC4D88DF184C7D47C9929B3232&source=youtube&sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&sver=3&upn=9RmkbstttTM http://r2---sn-5hn7zn7k.c.youtube.com/videoplayback?algorithm=throttle-factor&burst=40&cp=U0hWR1FUTl9GT0NONl9JTlJBOlBwSjNTRTA0azVw&cpn=B84QkSbXB7EAaDfs&expire=1372190015&factor=1.25&fexp=935500%2C910100%2C929227%2C916613%2C921047%2C928201%2C901208%2C929123%2C929915%2C929906%2C929907%2C929125%2C925714%2C929917%2C929919%2C931202%2C912512%2C912515%2C912521%2C906838%2C904488%2C906840%2C931910%2C931913%2C932227%2C904830%2C919373%2C933701%2C904122%2C900816%2C926403%2C909421%2C912711%2C935102&id=6ca6b1fa4c861ff9&ip=my ip address&ipbits=8&itag=34&keepalive=yes&key=yt1&ms=au&mt=1372168727&mv=m&newshard=yes&range=3563520-5347327&ratebypass=yes&signature=D8D28CBCD4AAC5F46901397219F62CB04D3C6290.114129F2F93249AC4D88DF184C7D47C9929B3232&source=youtube&sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&sver=3&upn=9RmkbstttTM
检查范围;它是在这些长篇网址中：
范围= 13-1781759
范围= 1781760-3563519
范围= 3563520-5347327
复制第一个网址并将其粘贴到浏览器中 现在您可以下载并保存第一个文件videoplayback_Pennacchi01 重复第2部分和第3部分的步骤。
在播放文件之前，还有几个步骤 在hex editor中打开文件videoplayback_Pennacchi01。
The file starts with: 12 00 03 4B 00 00 00 00 00 00 00 02 00 0A 6F 6E ...K..........on
Prepend the the FLV header: 46 4C 56 01 05 00 00 00 09 00 00 00 00 FLV..........
Now the file looks like: 46 4C 56 01 05 00 00 00 09 00 00 00 00 12 00 03 FLV............. 4B 00 00 00 00 00 00 00 02 00 0A 6F 6E 4D 65 74 K..........onMet
将光标移动到文件01的末尾 打开文件02和03，将文件内容复制并粘贴到文件01中。 现在您已准备好播放视频。
注1
这些链接在一段时间后过期：expire = 1372190015
Convert Unix timestamp to Readable Date/time：星期二，2013年6月25日19:53:35 GMT
您还可以从捕获文件重建FLV文件
转到文件 - ＆gt;导出对象 - ＆gt; HTTP
寻找内容类型video / x-flv
选择第一个，点击另存为然后保存文件
另外还有两个部分
按顺序合并文件并添加FLV标题。
注2 过去很容易。应用显示过滤器（http.request.method ==“GET”）并从包含/get_video?video...的GET请求中获取URL。但事情发生了变化......
答案 1 :(得分：-1)
Here is my example: http://www.youtube.com/watch?v=bKax-kyGH_k Wireshark - Using Dumpcap to capture to disk by Mike Pennacchi After capturing the packets apply a display filter: http.request.full_uri Select packet GET /url ... etc. Go to the Packet Details Pane Expand Hypertext Transfer Protocol Right-click on [Full request URI... etc. Select: Copy -> Value Here is the url: http://www.google.nl/url?sa=t&rct=j&q=youtube%20mike%20pennacchi&source=web&cd=8&ved=0CEwQtwIwBw&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DbKax-kyGH_k&ei=YNe9UanuIKP20gWM_IHgCw&usg=AFQjCNHPhvADvMvjOeDiL9lmv1FVb2vRjA&bvm=bv.47883778,d.d2k