我去了这个网站
www4.fmovies.to
然后我点击了一部电影，并通过Inspect->Network查看了它的CDN URL并获得以下详细信息
https://cdn.mcloud.to/stream/sf:i0:q2:h3:p23:l1/LR6ljfLn3hrEjSfrOp19wg/1542603600/i/f/2/nr69r8/hls/480/480-0013.ts
:authority: cdn.mcloud.to
:method: GET
:path: /stream/sf:i0:q2:h3:p23:l1/LR6ljfLn3hrEjSfrOp19wg/1542603600/i/f/2/nr69r8/hls/480/480-0001.ts
:scheme: https
accept: */*
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9
cookie: __cfduid=d0847f9ac6d9a8da1dd131d1a0a91ea991542533053; _ga=GA1.2.485859786.1542533055; _gid=GA1.2.1916946057.1542533055; _gat=1
origin: https://mcloud.to
referer: https://mcloud.to/embed/@P@O8SE2916SEOA5?sub.file=https%253A%252F%252Fstatic1.akacdn.ru%252Fsubtitle%252F40039.vtt%253Fv1&ui=oAhi567w9OQEhJWEdbl0s%40Ep0Ir2VvG1xiK9JqKx
user-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
使用上述信息创建标题信息，然后运行
request = requests.get(url, headers=headers)
但是我得到了403未授权。问题出在哪里？
您需要传递referer标头，它是视频内容iframe的src属性，看起来像
<iframe src="https://mcloud.to/embed/@9@4ZS04Z10SWOE5?ui=pwxi4Kjr6%40wHmIqHcrl0yeFfpYqUUIW1wCKlJr6x" allow="autoplay; fullscreen" scrolling="no" allowfullscreen="yes" style="width: 100%; height: 100%;" frameborder="no"></iframe>
代码看起来像
headers = {'user-agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:60.0)Gecko/20100101 Firefox/60.', 'pragma': 'no-cache', 'connection': 'keep-alive', 'cache-control': 'no-cache', 'referer': 'https://mcloud.to/embed/@9@4ZS04Z10SWOE5?ui=pwxi4Kjr6%40wHmIqHcrl0yeFfpYqUUIW1wCKlJr6x'}
requests.get('https://cdn.mcloud.to/stream/sf:i0:q2:h2:p24:l1/WjLDZuCBHmtyv63lT-RoVQ/1542603600/g/c/0/rj0m0m/hls/480/480-0000.ts', headers=headers)