Widevine KEY Extractor in Python


Widevine Client 3

This was originally written by T3rry7f. This repo is slightly modified version of his repo.
This only works on standard Windows!


usage: wvclient.py [-h] [-path INIT_PATH] [-pssh PSSH]
                             [-url LICENSE_URL]

optional arguments:
  -h, --help            show this help message and exit
  -path INIT_PATH, --init-path INIT_PATH
                        init.mp4 file path
  -pssh PSSH, --pssh PSSH
                        pssh which is base64 format
  -url LICENSE_URL, --license-url LICENSE_URL
                        widevine license server url


  1. Run license_proxy.exe and keep it running in the background!
  2. Download content in the MPD Manifest via widevine-dl (Or you can use other tools to download the encrypted content)
  3. Run wvclient3.py
$ python3 wvclient3.py -path 'PATH_TO_DOWNLOADED_CONTENT' -url 'LICENSE_URL'
  1. Decrypt using mp4decrypt with the keys obtained in the step above.

Legal Notice

Educational purposes only. Downloading DRM'ed materials may violate their Terms of Service.

If you enjoyed using the script, a star or a follow will be highly appreciated! 😎

  • Wrong key when Extractor from widevineclient3

    Wrong key when Extractor from widevineclient3

    I tried get with -pssh but the result returned the wrong key compared to when I used l3 decryptor. Let me know where the problem lies. I tried to get with Bitmovin gave correct results, but only true for Bitmovin and other sites all gave wrong results.

    -pssh AAAAR3Bzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAACcIARIQYRm96sFvguti6GFvcv9HcxoDdHZiIgxORGd4TlRreE9Td3c=

    Screenshot 2021-05-06 181940

    Key correct is 626e16c21dd9f24afaea4330ad9a4c22

    opened by khangnh 4
  • not working

    not working

    i don't know how to make it work. can you pls tell me about the license url. what is it and how to get it? I am just doing this and getting this:

    wvclient.py -path E:\encrypted.mp4
    Traceback (most recent call last):
      File "C:\Users\(user)\Downloads\Compressed\widevineclient3-main\wvclient.py", line 132, in <module>
      File "C:\Users\(user)\Downloads\Compressed\widevineclient3-main\wvclient.py", line 116, in main
      File "C:\Users\(user)\Downloads\Compressed\widevineclient3-main\wvclient.py", line 98, in work
        self.getContentKey(license_request_data, license_response_data)
      File "C:\Users\(user)\Downloads\Compressed\widevineclient3-main\wvclient.py", line 76, in getContentKey
    google.protobuf.message.DecodeError: Error parsing message with type 'video_widevine_server.sdk.SignedMessage'
    opened by baba-boota 0
  • Uses this program the wrong version of librarys?

    Uses this program the wrong version of librarys?

    license_proxy.exe abort with erros saying it needs vcruntime140d.dll and ucrtbased.dll It seems that these are debug variants of librarys; the normal ones didn't have a 'd' at the end. https://social.msdn.microsoft.com/Forums/windows/en-US/06b66cae-d010-441d-bc72-64a8c7cd65bc/missing-vcruntime140ddll-and-ucrtbaseddll?forum=visualstudiogeneral

    opened by Voidi 2
  • Couple Of Questions

    Couple Of Questions

    Will this work with the new WV DLL? I see you included the old and new, but wanted to make sure the "new" is with the May 31 WV change.

    I keep getting a site timeout, when it hits license_request_data = self.generateRequestData(pssh), it could be me and misunderstanding, so here are params i have tried:

    Path - This is the init.mp4 file downloaded from the target, or should this be the file in url, such as "http:\targetsite.com\init.mp4"

    License URL - Should this be just the base part of the license url in the MPD, or does it also need the params in the URL such as wvserver.com\license?b=1234546?v=asdfg, the site i am going to has a lot of params in the full license url.

    PSSH - These all look about the same depending on what CDM is being used, i am using the one that does not have the PlayReady tag.

    So a sample command for me that i have used:

    wvclient.py -path "c:\to the DL init.mp4" -url "site\upylink\wv" (and with the params from the MPD, same outcome)

    I am also not seeing how or where the "license_proxy.exe" is being called, or the WV CDM (the old or new).

    Any help would be grateful,


    opened by GreenAndFuzzy 1
  • which visual C++ use ?

    which visual C++ use ?


    I've issue with vicual C++ dll when launching lince_proxy.dll on windows 10 last build.

    missing ucrtbased.ll and vcruntime140d.dll but i've all C++ revision installed (x86 and x64) https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/

    what can i do ? Thanks,

    opened by pulp25 1
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