解析视频网站真实地址

http://blog.csdn.net/heng615975867/article/details/50437414
https://github.com/rg3/youtube-dl

original video webpage

http://v.qq.com/x/cover/g9jgclyhpp5sp7p.html?vid=g00118pmaso&ptag=blog_csdn_net

inspect and view the network
find the real url to open video

http://120.198.244.61:9999/111.30.132.250/music.qqvideo.tc.qq.com/g00118pmaso.p302.1.mp4?sha=201C34C3A7998BB56DC607F97D4AE0223A162F10&sdtfrom=v1000&type=mp4&vkey=C214E696E488E53015A868040558111553D9A13341F84BBD4A99AAB1A671B11DD3AEE105892FEC2015F6B3AC7A7FE3065A4015CD82D47F0B706E58C9D7AB4D8E3244A24B9590E308E29C03C0C015647FD6137EBD950E9716B2A2ACE42AB326EB2442D6E1BFEB3643BA426DA76823009B&level=0&platform=11&br=86&fmt=hd&sp=0&guid=5CF041B538D62072656BFB8E4A0417EF&ocid=2521830828&ocid=391321004&ocid=3915282442

remove some parameters and make sure the url is still functionable

http://111.30.132.250/music.qqvideo.tc.qq.com/g00118pmaso.p302.1.mp4?type=mp4&vkey=C214E696E488E53015A868040558111553D9A13341F84BBD4A99AAB1A671B11DD3AEE105892FEC2015F6B3AC7A7FE3065A4015CD82D47F0B706E58C9D7AB4D8E3244A24B9590E308E29C03C0C015647FD6137EBD950E9716B2A2ACE42AB326EB2442D6E1BFEB3643BA426DA76823009B

Response Header

POST /getvkey HTTP/1.1
Host: vv.video.qq.com
Connection: keep-alive
Content-Length: 696
Pragma: no-cache
Cache-Control: no-cache
Origin: http://imgcache.qq.com
X-Requested-With: ShockwaveFlash/22.0.0.209
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Accept: /
Referer: http://imgcache.qq.com/tencentvideo_v1/playerv3/TencentPlayer.swf?max_age=86400&v=20160929
Accept-Encoding: gzip, deflate

Accept-Language: en-US,en;q=0.8,zh-CN;q=0.6,zh;q=0.4
Cookie: ptui_loginuin=497149367; ptcz=74649f679f041cfdd2f915245fcd6862f1f48330f4d1c9af87de668817ac4f06; pt2gguin=o0497149367; tvfe_boss_uuid=d2fcf80b90c68b2b; o_cookie=497149367; pgv_info=ssid=s8808674630; pgv_pvid=2207831543

Response

<?xml version="1.0" encoding="utf-8" standalone="no" ?>
<root><s>o</s><keyid>g00118pmaso.10303.1</keyid><filename>g00118pmaso.p303.mp4</filename><key>D2B92D540528722D0D47339B7CF9BBF12B1589B7C05CAB349E60D8A64B8B1099936EA114F654DA5E8ECBAD9AA56064801E30C76246A0B46AB0A3AA370E3F70E666326731873753C436C2E248B7EE34421BB28FA2BBDF8E1E24647DECABB45BC95FFF0CA057019122670097E3137E652D</key>
43701.918</br><sp>0</sp><ct>21600</ct><sr>0</sr><level>0</level><levelvalid>1</levelvalid></root>