CloudFlareStream: binascii.Error: Incorrect padding

[boolbag]

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.09.20
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'https://watch.cloudflarestream.com/eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJraWQiOiJmYTA0YjViMzQ2NDkwYTM5NWJiNzQ1NWFhZTA2YzYwZSIsInN1YiI6Ijg4ZDQxMDhhMzY0MjA3M2VhYmFhZjg3ZGExODJkMjYzIiwiZXhwIjoxNjAwNjA5MzE5fQ.xkRJwLGkt0nZ%5F0BlPiwU7iW4pqb4lKkznbKfAhGg0tGcxSS6ZBA3lcTUwu7W%2DyCFbnAl%2Dhqk3Fn%5FqeQS%5FQydP27qTHpB9iIFFsMtk1tqzGZV5v4yrYDnwLSKzEKvVd6QwJnfABtxH2JdpSNuWlMUiVXFxGWgjOw6QeTNDDklTQYXV%5FNLV7sErSn5CeOPeRRkdXb%2D8ip%5FVOcfk1nDsFoOo4fctFtGP0wYMyY5ae8nhhatydHwevuvJCcEvEfh%2D4qjq9mCZOodevmtSQ4YWmggf4BxtWnDWYrGW8Otp6oqezrR8oY4%2DbKdV6PaqBj49aJdcls6xK7PmM8%5Fvjy3xfm0Mg']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2020.09.20
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: none
[debug] Proxy map: {}
Traceback (most recent call last):
  File "__main__.py", line 19, in <module>
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\__init__.py", line 474, in main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\__init__.py", line 464, in _real_main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 2019, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 797, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\extractor\common.py", line 532, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\extractor\cloudflarestream.py", line 57, in _real_extract
  File "C:\Python\Python34\lib\base64.py", line 135, in urlsafe_b64decode
  File "C:\Python\Python34\lib\base64.py", line 90, in b64decode
binascii.Error: Incorrect padding

Description

Video plays in browser but generates error in youtube-dl.

[parrukeisari]

I stumbled accross this one as well and did some digging. Looks like this is caused by cloudflare not properly padding the base64 encoded data that end up in video_id.

A workable fix is to add
import math
to cloudflarestream.py and replace line 57 in the same file with this:
video_id.split('.')[1].ljust(math.ceil(len(video_id.split('.')[1])/4)*4, '=')

Basically we'll just pad the string going to urlsafe_b64decode ourselves so that the decoder is happy.

[jacobkoziej]

I stumbled accross this one as well and did some digging. Looks like this is caused by cloudflare not properly padding the base64 encoded data that end up in video_id.

A workable fix is to add
import math
to cloudflarestream.py and replace line 57 in the same file with this:
video_id.split('.')[1].ljust(math.ceil(len(video_id.split('.')[1])/4)*4, '=')

Basically we'll just pad the string going to urlsafe_b64decode ourselves so that the decoder is happy.

Awesome! This fixed the issue on my end :)

[covix]

great! it worked for me as well!
Is there a reason this was not fixed in a more recent release?

Thanks anyway!!

[PhilPhonic]

Having the same problem but the fix mentioned here does not work for me.
Any chance anyone could create a working fork of this?
nvm.. python2 was my problem here

[covix]

Having the same problem but the fix mentioned here does not work for me. Any chance anyone could create a working fork of this? nvm.. python2 was my problem here

Do you mean that the problem persisted also with python3 and that the proposed solution fixed it?

[PhilPhonic]

with python3 the proposed solution fixed it ;)

[covix]

with python3 the proposed solution fixed it ;)

Great! would you please post the link of the video you were trying to download? To replicate the error for later submitting a PR

[PhilPhonic]

Great! would you please post the link of the video you were trying to download? To replicate the error for later submitting a PR

sorry, that link has rotated out of my bash history