Windows 10下如何为pytube添加代码绕过YouTube年龄限制？

问题场景 #

在Windows 10系统中使用pytube下载YouTube视频（链接：https://www.youtube.com/watch?v=cw2vlMK9P7U）时，触发以下错误：

Traceback (most recent call last):
  File "c:\Users\1005447\ytdown.py", line 15, in <module>
    streams = vid.streams.filter(file_extension='mp4')
              ^^^^^^^^^^^
  File "C:\Users\1005447\AppData\Local\Programs\Python\Python312\Lib\site-packages\pytube\__main__.py", line 296, in streams
    return StreamQuery(self.fmt_streams)
                       ^^^^^^^^^^^^^^^^
  File "C:\Users\1005447\AppData\Local\Programs\Python\Python312\Lib\site-packages\pytube\__main__.py", line 176, in fmt_streams
    stream_manifest = extract.apply_descrambler(self.streaming_data)
                                                ^^^^^^^^^^^^^^^^^^^
  File "C:\Users\1005447\AppData\Local\Programs\Python\Python312\Lib\site-packages\pytube\__main__.py", line 160, in streaming_data
    self.bypass_age_gate()
  File "C:\Users\1005447\AppData\Local\Programs\Python\Python312\Lib\site-packages\pytube\__main__.py", line 264, in bypass_age_gate
    raise exceptions.AgeRestrictedError(self.video_id)
pytube.exceptions.AgeRestrictedError: cw2vlMK9P7U is age restricted, and can't be accessed without logging in.

用户使用的源代码：

import os
import pytube as pt
import time as t

urltu = input("Enter the full link to the video you wish to download --> ")
qualin = input("""Which quality do you wish to download? 
                 Type H if you want highest
                 Type L if you want lowest
                 Type your answer here --> """)
qualin = qualin.upper()

Monostate = {"allow_ratelimiting": True}
vid = pt.YouTube(urltu)
videoid = vid.video_id
streams = vid.streams.filter(file_extension='mp4')

if qualin == "H":
    stream = streams.get_by_itag(streams.first().itag)
    filenamed = f"{vid.title}_highqual.mp4"
elif qualin == "L":
    stream = streams.get_by_itag(streams.last())
    filenamed = f"{vid.title}_lowqual.mp4"
else:
    print("Invalid choice. Exiting.")
    exit()

stream.download(filename=filenamed)
os.system(f'start "" "{filenamed}"')
print(f"Downloaded file. Filename is {filenamed}")
t.sleep(30)

用户无法找到innertube.py，询问需向代码添加什么内容绕过年龄限制。

解决方案 #

无需修改库文件，通过给pytube的YouTube对象传入已登录YouTube的cookie即可绕过限制，具体操作如下：

1. 获取YouTube登录cookie #

• 打开浏览器登录YouTube，访问目标视频页面
• 按F12打开开发者工具，切换到「应用程序」标签
• 在左侧「存储」>「Cookies」>「https://www.youtube.com」中，找到__Secure-3PSID和__Secure-3PAPISID两个cookie的值并复制

2. 修改代码 #

在创建pt.YouTube对象时，添加cookie和模拟浏览器的请求头参数，完整修改后的代码如下：

import os
import pytube as pt
import time as t

urltu = input("Enter the full link to the video you wish to download --> ")
qualin = input("""Which quality do you wish to download? 
                 Type H if you want highest
                 Type L if you want lowest
                 Type your answer here --> """)
qualin = qualin.upper()

# 替换为你自己的cookie值
cookies = {
    "__Secure-3PSID": "你的__Secure-3PSID值",
    "__Secure-3PAPISID": "你的__Secure-3PAPISID值"
}

# 模拟浏览器请求头
headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
}

Monostate = {"allow_ratelimiting": True}
# 传入cookie和请求头初始化YouTube对象
vid = pt.YouTube(urltu, cookies=cookies, headers=headers)
videoid = vid.video_id
streams = vid.streams.filter(file_extension='mp4')

if qualin == "H":
    stream = streams.get_by_itag(streams.first().itag)
    filenamed = f"{vid.title}_highqual.mp4"
elif qualin == "L":
    stream = streams.get_by_itag(streams.last().itag)
    filenamed = f"{vid.title}_lowqual.mp4"
else:
    print("Invalid choice. Exiting.")
    exit()

stream.download(filename=filenamed)
os.system(f'start "" "{filenamed}"')
print(f"Downloaded file. Filename is {filenamed}")
t.sleep(30)

注意事项 #

• __Secure-3PSID和__Secure-3PAPISID会定期失效，若出现访问失败，重新获取最新值即可
• 确保你的YouTube账号已完成年龄验证，能够正常访问目标视频

内容的提问来源于stack exchange，提问作者Bella L.