以360影视播放页地址http://v.360kan.com/sv/cIPmaWPqUBT5TC.html 为例，说说如何得到视频的真实地址。
同样，我们使用浏览器的开发者工具观察页面视频加载过程中出现了哪些值得关注的网络请求，然后分析这些请求之间的关联关系。
第一步，请求接口 http://v.360kan.com/Shortvideo/ajaxApi?id=cIPmaWPqUBT5TC&_=1478005639801 返回如下JSON数据：
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"error": "ok",
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},
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{
"title": "惨！实拍公路桥被车重压垮塌",
"cover": "http://p2.qhimg.com/t018f25cf6682b46e73.gif",
"url": "http://v.360kan.com/sv/dInmbWPqUBTyTi.html"
},
{
"title": "新买iPhone7相册存陌生人照片",
"cover": "http://p3.qhimg.com/t01f04fee7bd224af4b.jpg",
"url": "http://v.360kan.com/sv/bYjobWPqUBT6TC.html"
},
{
"title": "20岁林允曝性感照",
"desc": "晒美胸美背好诱人",
"cover": "http://p3.qhimg.com/t01938e1dd299bb1cf5.jpg",
"url": "http://v.360kan.com/sv/b4nkbGPqSxnzSi.html"
},
{
"title": "摩的司机占道不听劝亮刀打交警",
"cover": "http://p4.qhimg.com/t012b069fa44b11a5bf.gif",
"url": "http://v.360kan.com/sv/cYbnaWPqUBT2SC.html"
},
{
"title": "爆笑！盘点那些奇葩的开门方式",
"cover": "http://p1.qhimg.com/t015fa4d2fd82b0d944.jpg",
"url": "http://v.360kan.com/sv/b4TqaWPqUBT5Si.html"
},
{
"title": "奇葩男子冒雨碰瓷 先敬礼再摔倒",
"cover": "http://p0.qhimg.com/t01c44f03d525093473.jpg",
"url": "http://v.360kan.com/sv/corjaWPqUBL4TC.html"
},
{
"title": "网曝两女子和狗围攻老人 老人被打倒在地猛踹",
"cover": "http://p2.qhimg.com/dmb/380_220_/t019c94eb2edd62b7fe.gif",
"url": "http://v.360kan.com/sv/cobpbWPqUBTyUS.html",
"date": "2016110101"
},
{
"title": "相恋结婚9年 丈夫竟然变妻子？",
"cover": "http://p7.qhimg.com/t01359b0b35aa2b187b.gif",
"url": "http://v.360kan.com/sv/cIPocWPqUBT6Sy.html"
}
],
"wemedia": {
"wmid": "c4LiQHkwQWn58g",
"wm_url": "http://wemedia.360kan.com/wm/c4LiQHkwQWn58g.html?from=v",
"name": "车祸实拍",
"head_img": "http://p0.qhimg.com/t01c341f9415acebca7.jpg",
"video_count": "2",
"fans_count": "12",
"upload_time": "2016-10-28 19:25",
"desc": "歼20亮相珠海航展",
"tags": [
"歼20",
"亮相"
],
"judgeAttention": -1
},
"log": {
"vid": 678474,
"catid": "1700",
"sub_catid": null
}
}
}
该接口请求中的id参数值可以从播放页地址中提取得到。从返回的JSON数据中，我们发现相关视频（result/video/relate）列表中的第一项就是要找的视频信息。其中的id正好是播放页地址中的id，url就是接下来要请求的东西。
{
"errno": 0,
"error": "ok",
"result": {
"vid": "1b190d3186c3d889102d9eebcd2274e1",
"site": "360shipin",
"duration": 42,
"title": "682804",
"pic": "http://p4.qhimg.com/t01d2a7df91a54e3b5e.jpg",
"currqua": {
"key": "xd",
"value": "超清"
},
"quality": [
{
"key": "xd",
"value": "超清"
},
{
"key": "hd",
"value": "高清"
},
{
"key": "sd",
"value": "标清"
}
],
"vrtype": {
"key": 0,
"value": "普通视频"
},
"drmtype": "non",
"stype": "m3u8",
"usep2p": 0,
"sid": "fanqie_web",
"videos": [
{
"duration": 42,
"url": "http://g.play.tvfanqie.com/video/getplay?mid=1b190d3186c3d889102d9eebcd2274e1&dtype=non&stype=m3u8&_rate=xd&sid=fanqie_web&source=1&ts=1478007132&_sign=69e115781ac007e9df87a0c3425afa53"
}
]
}
}
从这串JSON数据可以推知，currqua是当前清晰度的意思，quality列表表示该视频有哪些清晰度。重点在于videos列表中的url，请求该地址，得到的是一个m3u8文件内容：
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-ALLOW-CACHE:YES
#EXT-X-QIHU-RUID:900b2f1b2d2f99a16353e5d4abda38d6
#EXT-X-CDN_DOMAIN:y.play.360kan.com
#EXT-X-TARGETDURATION:10
#EXT-X-QIHU-SZ:1639736
#EXTINF:8.166,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb15523d_0.ts?time=1478007357&sign=13479111e10e131dc8dd6ea2720fea49
#EXT-X-QIHU-SZ:1143792
#EXTINF:6.250,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb1d40ae_1.ts?time=1478007357&sign=3d7e66b1b13c52db597eabbf02bffd72
#EXT-X-QIHU-SZ:882284
#EXTINF:6.250,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb1fab8e_2.ts?time=1478007357&sign=6be2a1c97c1110942f5358a9a190716e
#EXT-X-QIHU-SZ:1175564
#EXTINF:6.250,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb158a8d_3.ts?time=1478007357&sign=fb790212297512ceb6f21e28069d5eca
#EXT-X-QIHU-SZ:962560
#EXTINF:6.250,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb1379bb_4.ts?time=1478007357&sign=1f1cf07d2231e5f951319f530b1044a4
#EXT-X-QIHU-SZ:861980
#EXTINF:4.750,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb19a24f_5.ts?time=1478007357&sign=27b20b0fec49b61fcab804a3ffbf727f
#EXT-X-QIHU-SZ:521136
#EXTINF:4.000,
http://y.play.360kan.com/vod/143/141/900b2f1b2d2f99a16353e5d4abda38d6/1b190d3186c3d889102d9eebcd2274e1_1280_640_1200_128_900b2f1b2d2f99a16353e5d4abda38d6_mp4_3gb10f11b_6.ts?time=1478007357&sign=fc13fb4ba30872643e5b2c5e6916a513
#EXT-X-ENDLIST
从m3u8文件中提取出各个视频分段的地址，分别下载完成后合并成完整视频即可。
Python代码示例
import re
import requests
import json
url = 'http://v.360kan.com/sv/cIPmaWPqUBT5TC.html'
vid = re.search('/(\w+).html', url).group(1)
r = requests.get('http://v.360kan.com/Shortvideo/ajaxApi?id=%s' % vid)
data = json.loads(r.content)
relate_videos = data['result']['video']['relate']
for v in relate_videos:
if v['id'] == vid:
r = requests.get(v['url'])
data = json.loads(r.content)
m3u8_url = data['result']['videos'][0]['url']
r = requests.get(m3u8_url)
segments = re.findall(r'^[^#][^\r][^\n]*', r.content, re.MULTILINE)
for seg in segments:
print seg
break
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