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记一次m3u8文件的下载

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记一次m3u8文件的下载

记一次m3u8文件的下载

记录

  1. 手机到浏览器粘贴网址，可以正常播放，复制地址到电脑端无法播放

  2. 电脑端打开F12发现会重复卡在debuggger，是一种反破解的手段

  3. 手机端使用HttpCanary进行抓包，但是抓不到，发现是https，需要HttpCanary安装证书，但是需要root，比较麻烦

  4. 地址换成http，可以抓到了，第一个请求是一个正常网址，第二个请求返回了一堆js的函数，是经过加密的，经过搜索发现是一个叫jsjiami的网站进行加密的，网站:https://www.jsjiami.com/，加密程度非常高，我会在文章附录贴一下代码，有兴趣的读者可以试试

  5. 将其放到jsjiami解密函数网站：https://www.jsjiami.com/jiemi.html还是无法全部解密

  6. 使用手机浏览器的资源嗅探功能可以获取到一个m3u8的文件地址，但是无法直接下载，所以使用HttpCanary抓包到的第一个网址的cookie加上这个m3u8的文件的地址使用postman成功获取到了m3u8的文件信息

  7. 使用m3u8下载工具下所有的切割文件，但是这些文件是.jpg格式的，可以通过填充文件头还原成ts文件，文章附录有转换的python代码

  8. 然后对m3u8文件中的切割文件进行提取，通过这个对处理后的切割文件进行排序

  9. 最后使用m3u8工具对切割文件进行合成就成功了

附录

  1. 文件格式还原python代码
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import os
import os.path


def resolve_ts(src_path, dst_path):
    '''
    如果m3u8返回的ts文件地址为图片，则需要下面处理后 才能进行合并
    原因在于 使用Hexeditor打开后，发现文件头被描述为了PNG
    在这种情况下，只需要将其中PNG/jpg文件头部分全部使用FF填充，即可处理该问题
    :return:
    '''
    if not os.path.exists(dst_path):
        os.mkdir(dst_path)
    file_list = sorted(os.listdir(src_path), key=lambda x: x.split('.')[0])
    for i in file_list:
        origin_ts = os.path.join(src_path, i)
        resolved_ts = os.path.join(dst_path, i)
        try:
            infile = open(origin_ts, "rb")  # 打开文件
            outfile = open(resolved_ts, "wb")  # 内容输出
            data = infile.read()
            outfile.write(data)
            outfile.seek(0x00)
            outfile.write(b'\xff\xff\xff\xff')
            outfile.flush()
            infile.close()  # 文件关闭
            outfile.close()
        except:
            pass
        print('resolve ' + origin_ts + ' success')

resolve_ts("原目录", "新目录")
  1. js加密代码

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