pytube: KeyError: 'cipher'

from pytube import YouTube
yt = YouTube('https://www.youtube.com/watch?v=3AtDnEC4zak')

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
~/.conda/envs/Karaoke/lib/python3.7/site-packages/pytube/extract.py in apply_descrambler(stream_data, key)
    296                 }
--> 297                 for format_item in formats
    298             ]

~/.conda/envs/Karaoke/lib/python3.7/site-packages/pytube/extract.py in <listcomp>(.0)
    296                 }
--> 297                 for format_item in formats
    298             ]

KeyError: 'url'

During handling of the above exception, another exception occurred:

KeyError                                  Traceback (most recent call last)
<ipython-input-3-bc6543d387ce> in <module>
----> 1 yt = YouTube('https://www.youtube.com/watch?v=3AtDnEC4zak')

~/.conda/envs/Karaoke/lib/python3.7/site-packages/pytube/__main__.py in __init__(self, url, defer_prefetch_init, on_progress_callback, on_complete_callback, proxies)
     90         if not defer_prefetch_init:
     91             self.prefetch()
---> 92             self.descramble()
     93 
     94     def descramble(self) -> None:

~/.conda/envs/Karaoke/lib/python3.7/site-packages/pytube/__main__.py in descramble(self)
    130             if not self.age_restricted and fmt in self.vid_info:
    131                 apply_descrambler(self.vid_info, fmt)
--> 132             apply_descrambler(self.player_config_args, fmt)
    133 
    134             if not self.js:

~/.conda/envs/Karaoke/lib/python3.7/site-packages/pytube/extract.py in apply_descrambler(stream_data, key)
    299         except KeyError:
    300             cipher_url = [
--> 301                 parse_qs(formats[i]["cipher"]) for i, data in enumerate(formats)
    302             ]
    303             stream_data[key] = [

~/.conda/envs/Karaoke/lib/python3.7/site-packages/pytube/extract.py in <listcomp>(.0)
    299         except KeyError:
    300             cipher_url = [
--> 301                 parse_qs(formats[i]["cipher"]) for i, data in enumerate(formats)
    302             ]
    303             stream_data[key] = [

KeyError: 'cipher'

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 14
Comments: 54

Commits related to this issue

Fallback to index "signatureCipher" It seems like YouTube recently changed the key name for "cipher" to "signatureCipher" and PyTube has been failing because of this. With this commit, PyTube will f... — committed to ritiek/pytube by ritiek 4 years ago
Fallback to index "signatureCipher" It seems like YouTube recently changed the key name for "cipher" to "signatureCipher" and PyTube has been failing because of this. With this commit, PyTube will f... — committed to ritiek/pytube by ritiek 4 years ago
Patch PyTube to correctly parse videos This code has been taken from PyTube https://github.com/nficano/pytube and is based on https://github.com/nficano/pytube/pull/643 This is because the commit re... — committed to spotDL/spotify-downloader by ritiek 4 years ago
Patch PyTube to correctly parse videos This code has been taken from PyTube https://github.com/nficano/pytube and is based on https://github.com/nficano/pytube/pull/643 This is because the commit re... — committed to spotDL/spotify-downloader by ritiek 4 years ago
Use a very particular, forked version of pytube See pytube issue #641 https://github.com/nficano/pytube/issues/641 — committed to c3er/ytdl by c3er 4 years ago

Most upvoted comments

Does #643 fix this for you guys?

Yes, I have the same error and fixed it as suggested:

except KeyError: cipher_url = [ parse_qs(formats[i][“signatureCipher”]) for i, data in enumerat$ ]

+16

kelvin84hk on May 29, 2020

When can we expect a release with the fix?

+11

katsar0v on May 29, 2020

Just go to the pytube\extract.py (in pytube library)file: the path of file will be : “C:\ProgramData\Anaconda3\lib\site-packages\pytube\extract.py”, (in windows)

Open extract,py file and search for line: parse_qs(formats[i][“cipher”]) for i, data in enumerate(formats)

now replace ‘cipher’ with ‘signatureCipher’.

save it.

now run your code again

+10

MukulKirtiVerma on Jul 21, 2020

While waiting for the maintainer to address these PRs, feel free to use our public version with #643 merged in:

https://gitlab.com/obuilds/public/pytube

I use GitLab because I am a savage

You can install the tagged version like so:

pip install git+https://gitlab.com/obuilds/public/pytube@ob-v1

or add the following to your requirements.txt

git+https://gitlab.com/obuilds/public/pytube@ob-v1

Hopefully our boy sees these MRs soon and gets a new release out.

kbuilds on May 31, 2020

@pranshukharkwal @Suji04 I upgraded and it worked!!!

The below code is working :

!pip install git+https://gitlab.com/obuilds/public/pytube@ob-v1 --upgrade from pytube import YouTube yt = YouTube(‘https://www.youtube.com/watch?v=-tJYN-eG1zk’)

yogesh-12 on Jun 6, 2020

@Suji04 @yogesh-12 Install the package from the GitLab repository shared by @kbuilds in Google Colab. Check the code below

!pip install git+https://gitlab.com/obuilds/public/pytube@ob-v1 from pytube import YouTube yt = YouTube('https://www.youtube.com/watch?v=-tJYN-eG1zk') `

pranshukharkwal on Jun 6, 2020

Why don’t you try the maintained fork of pytube, pytubex

irahorecka on Sep 20, 2020

extract.py line 295

stream_data[key] = [
                {
                    "url": format_item["url"]), <----- No more url  replaced with signatureCipher
                    "type": format_item["mimeType"],
                    "quality": format_item["quality"],
                    "itag": format_item["itag"],
                    "bitrate": format_item.get("bitrate"),
                    "is_otf": (format_item.get("type") == otf_type),
                }
                for format_item in formats
            ]

gorkemt on May 29, 2020

Believe this is fixed in most recent version of Pytube @irahorecka @Joedmin580 @anonymous770

Let me know if this still doesnt work – thanks

RONNCC on Oct 31, 2020

Guys i figured it out:

For ’ Too Many values to unpack error:

https://github.com/nficano/pytube/pull/701/commits/773866382c3412e01f97f242e753cf32f52aaefa#diff-e5b8b42cf1afd9ee025a9e6d48697ca0

Go to this link and Replace all the data inside your cipher file with the given inside the link.It’ll work.

avigupta10 on Jul 28, 2020

@Remus432 see this https://github.com/nficano/pytube/issues/695

konnovdev on Jul 28, 2020

Looks like someone is a fan of Queen

kbuilds on Jun 6, 2020