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使用FFMPEG录制抖音直播

calendar 2025/07/15
refresh-cw 2025/07/15
7473字,15分钟
tag ffmpeg;

前言 🔗

一直一来对ffmpeg都只是处于道听途说的状态，正好由于某种需求的存在进行了本次操作

本文章仅为技术性测试，不涉及仍然爬虫等相关违法行为

直播间分析 🔗

随便找个直播，地址类似于：https://live.douyin.com/20646742220

敏感的判断，20646742220应该是直播间ID，且该Id应该是唯一的？

于是起手，httpclient.GetStringAsync

咦？怎么全是乱码，这不对吧这，一定是cookie的问题！


于是浏览器进入，找到cookie一个一个尝试所必要的cookie带入

最后得到结果，只需要携带cookie:__ac_nonce，后面的参数似乎无所谓直接uuid即可

打开浏览器F12，找到长连接的部分


嗯，应该就是你了 https://d1e0cbb1cdf170bbadfe40c1e8f37276.v.smtcdns.net/pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?(参数省略)

那么问题来了，这个url是哪里来的？


找到了，在html里！再次分析发现其在script中

1 <div class="basicPlayer VikzqdfH pACxQsmy living_player xgplayer-pc january-optimize xgplayer" data-e2e="basicPlayer"></div>
2	<script nonce="fBuoBl7dsWnFFxqSwMukL" data-config="{&quot;url&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=3bf8ca94a135ba50f5f12dd372361a83&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv&amp;abr_pts=-800&quot;,&quot;bitrate&quot;:15645000,&quot;volume&quot;:0,&quot;poster&quot;:&quot;&quot;,&quot;icons&quot;:{&quot;loadingIcon&quot;:&quot;&lt;div class=\&quot;uzRfxSxz live-player-loading loading-optimize HideInLynxClassName\&quot;&gt;&lt;div class=\&quot;RhI70WHf\&quot;&gt;&lt;/div&gt;&lt;div class=\&quot;C8kUloYh\&quot;&gt;直播加载中&lt;/div&gt;&lt;/div&gt;&quot;},&quot;resolutionsel&quot;:{&quot;resolutions&quot;:[{&quot;quality&quot;:&quot;md&quot;,&quot;resolution&quot;:&quot;640x360&quot;,&quot;url&quot;:&quot;https://pull-flv-l11-admin.douyincdn.com/thirdgame/stream-694071773367632716_md.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=3bda057acef64b3f4689c2139c56d031&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv_md&quot;},{&quot;quality&quot;:&quot;ld&quot;,&quot;resolution&quot;:&quot;960x540&quot;,&quot;url&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_expld5.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=bd19dba1236d9f2b0ebb8944b37acc39&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv_expld5&quot;},{&quot;quality&quot;:&quot;sd&quot;,&quot;resolution&quot;:&quot;1280x720&quot;,&quot;url&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_expsd5.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=d512a78ff7c6eab51e422da2edfd8b10&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv_expsd5&quot;},{&quot;quality&quot;:&quot;hd&quot;,&quot;resolution&quot;:&quot;1280x720&quot;,&quot;url&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_exphd5.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=9398af00d54ea5758f1e0ac413512828&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv_exphd5&quot;},{&quot;quality&quot;:&quot;uhd&quot;,&quot;resolution&quot;:&quot;1920x1080&quot;,&quot;url&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_expuhd5.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=734238dfd746f71e77d3c6a6b7a86122&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv_expuhd5&quot;},{&quot;quality&quot;:&quot;origin&quot;,&quot;resolution&quot;:&quot;1920x1080&quot;,&quot;url&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=3bf8ca94a135ba50f5f12dd372361a83&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv&quot;}],&quot;dividing&quot;:7,&quot;useArea&quot;:false,&quot;useScore&quot;:true,&quot;useLongFirstframe&quot;:false,&quot;switchUrl&quot;:&quot;https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=3bf8ca94a135ba50f5f12dd372361a83&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv&quot;,&quot;lowUrl&quot;:&quot;https://pull-flv-l11-admin.douyincdn.com/thirdgame/stream-694071773367632716_md.flv?arch_hrchy=h1&amp;exp_hrchy=h1&amp;expire=1753151119&amp;major_anchor_level=common&amp;sign=3bda057acef64b3f4689c2139c56d031&amp;t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&amp;unique_id=stream-694071773367632716_844_flv_md&quot;},&quot;bgplay&quot;:null,&quot;videoInit&quot;:true,&quot;autoplay&quot;:true,&quot;autoplayMuted&quot;:false,&quot;loadTimeout&quot;:5000,&quot;retryCount&quot;:3,&quot;preloadTime&quot;:4,&quot;flvPreloader&quot;:null,&quot;closeFocusVideoFocus&quot;:true,&quot;closePauseVideoFocus&quot;:false,&quot;closePlayVideoFocus&quot;:false,&quot;closeVideoDblclick&quot;:false,&quot;closeVideoClick&quot;:true,&quot;enableContextmenu&quot;:false,&quot;isBlackScreenProbe&quot;:false,&quot;adaptiveConfig&quot;:{&quot;hurryEndMs&quot;:1800,&quot;hurryStartMs&quot;:2500,&quot;hurrySpeed&quot;:1.1,&quot;thresholdDown&quot;:true},&quot;marginControls&quot;:false,&quot;loggerOptions&quot;:{&quot;device_id&quot;:&quot;7516178881725416997&quot;,&quot;scene&quot;:&quot;live_detail&quot;,&quot;live_type&quot;:1,&quot;definition&quot;:&quot;origin&quot;,&quot;is_game&quot;:1},&quot;isPaidLive&quot;:false,&quot;secretKey&quot;:&quot;&quot;,&quot;sessionId&quot;:&quot;037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&quot;,&quot;rotate&quot;:true,&quot;autoHide&quot;:true,&quot;isVideoSupportMP4&quot;:true,&quot;isVipLive&quot;:false,&quot;isVip&quot;:false,&quot;isWebSr&quot;:false,&quot;volumeBalance&quot;:false,&quot;isGovern&quot;:true,&quot;januaryOptimize&quot;:true}" data-ab="{}" data-is-double-screen="false" data-anchor-info="{&quot;nickname&quot;:&quot;扶风pubg&quot;,&quot;avatar&quot;:&quot;https://p3.douyinpic.com/aweme/100x100/aweme-avatar/douyin-user-image-file_6463693d8901cf6eccddbc9316f9017c.jpeg?from=3067671334&quot;,&quot;id_str&quot;:&quot;3156068413478026&quot;}" data-room-info="{&quot;roomId&quot;:&quot;7527105259060202240&quot;,&quot;linkerUiLayout&quot;:0}">
3		__inline_player__.createInlinePlayer(document.currentScript)
4	</script>
5 </div>

解析一下data-config中的数据

 1{
 2  "url": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=3bf8ca94a135ba50f5f12dd372361a83&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv&abr_pts=-800",
 3  "bitrate": 15645000,
 4  "volume": 0,
 5  "poster": "",
 6  "icons": {
 7    "loadingIcon": "<div class=\"uzRfxSxz live-player-loading loading-optimize HideInLynxClassName\"><div class=\"RhI70WHf\"></div><div class=\"C8kUloYh\">直播加载中</div></div>"
 8  },
 9  "resolutionsel": {
10    "resolutions": [
11      {
12        "quality": "md",
13        "resolution": "640x360",
14        "url": "https://pull-flv-l11-admin.douyincdn.com/thirdgame/stream-694071773367632716_md.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=3bda057acef64b3f4689c2139c56d031&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv_md"
15      },
16      {
17        "quality": "ld",
18        "resolution": "960x540",
19        "url": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_expld5.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=bd19dba1236d9f2b0ebb8944b37acc39&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv_expld5"
20      },
21      {
22        "quality": "sd",
23        "resolution": "1280x720",
24        "url": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_expsd5.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=d512a78ff7c6eab51e422da2edfd8b10&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv_expsd5"
25      },
26      {
27        "quality": "hd",
28        "resolution": "1280x720",
29        "url": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_exphd5.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=9398af00d54ea5758f1e0ac413512828&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv_exphd5"
30      },
31      {
32        "quality": "uhd",
33        "resolution": "1920x1080",
34        "url": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716_expuhd5.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=734238dfd746f71e77d3c6a6b7a86122&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv_expuhd5"
35      },
36      {
37        "quality": "origin",
38        "resolution": "1920x1080",
39        "url": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=3bf8ca94a135ba50f5f12dd372361a83&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv"
40      }
41    ],
42    "dividing": 7,
43    "useArea": false,
44    "useScore": true,
45    "useLongFirstframe": false,
46    "switchUrl": "https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=3bf8ca94a135ba50f5f12dd372361a83&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv",
47    "lowUrl": "https://pull-flv-l11-admin.douyincdn.com/thirdgame/stream-694071773367632716_md.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=3bda057acef64b3f4689c2139c56d031&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv_md"
48  }
49}

那么多数据不需要去care，只需要看到resolutions里的东西即可，quality对应的是画质，resolution对应的是分辨率

在网络如此发达的今天，那必然选择原画，找到origin下的url即可

所以最后的url是:https://pull-flv-l11.douyincdn.com/thirdgame/stream-694071773367632716.flv?arch_hrchy=h1&exp_hrchy=h1&expire=1753151119&major_anchor_level=common&sign=3bf8ca94a135ba50f5f12dd372361a83&t_id=037-20250715102518D233363F8AC4B5AC44DA-4fUuOp&unique_id=stream-694071773367632716_844_flv

FFMPEG启动 🔗

看一下文档，直接cli启动 ffmpeg -i “上述的地址” -c copy “./1.flv”

就可以看到1.flv在当前目录下显示了，我想直接看怎么办？

下载potplay,将获取到的地址添加进去


然后就可以开心的看直播且不受弹幕/送礼/抖音app数据收集的烦恼了！


由于抖音直播的格式为.flv，所以需要转码操作，以转mp4为例 ffmpeg -i 1.flv -c copy 1.mp4

其他操作，例如剪辑/合并/提取帧等操作在ffmpeg里都只需要命令行即可完成，非常的方便

可以实现的操作 🔗

  • 监听某位主播是否上线，上线提示通知
  • 无人值守录制直播
  • 将录制到的直播提取音频，训练AI模仿声音等等
  • 其他平台相同的操作，快手/斗鱼/youtube等

再次申明，务必合理使用此方式，严禁用于黑灰产！！！

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