Blob url 有办法爬下来么 - V2EX
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hjuj91

Blob url 有办法爬下来么

  •  1
     
  •   hjuj91 Jan 6, 2018 6420 views
    This topic created in 3059 days ago, the information mentioned may be changed or developed.

    向 b 站这种 https://www.bilibili.com/video/av17939763/?spm_id_from=333.334.chief_recommend.17 video 标签全部是 blob url,看了下接口都是需要签名的,只有看懂混淆的 js 然后找签名算法来爬视频这一种办法吗???

    2 replies    2018-01-07 13:16:47 +08:00
    ysc3839
        1
    ysc3839  
       Jan 7, 2018 via Android
    最好先去了解一下什么是 Blob。这是 JS 代码返回的数据的。像 B 站是因为使用了 flv.js ,作用是把 flv 重新封装成 mp4 格式,让浏览器播放。
    duan602728596
        2
    duan602728596  
       Jan 7, 2018 via iPhone
    接口确实需要签名.......如果想要自动化的话就扒算法吧……半自动就是 f12 查看签名。我有段代码就是先 f12 看签名后,使用 fetch 下载视频,然后在网页上生成 blob 链接的方式来下载的。而且视频是分段的,还需要用软件来合并
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