Error downloading YouTube videos with new signature length 92 #1060

Baqan · 2013-07-16T23:30:52Z

Hi,

I have problems when I try to downloads videos from YouTube since some hours ago. Apparently, there is a new signature length (92).

C:\yt-dl>youtube-dl http://www.youtube.com/watch?v=j5-yKhDd64s
[youtube] Setting language
[youtube] j5-yKhDd64s: Downloading video webpage
[youtube] j5-yKhDd64s: Downloading video info webpage
[youtube] j5-yKhDd64s: Extracting video information
[youtube] j5-yKhDd64s: Encrypted signatures detected.
ERROR: Unable to decrypt signature, key length 92 not supported; retrying might
work; please report this issue on https://yt-dl.org/bug . Be sure to call youtub
e-dl with the --verbose flag and include its complete output.

I don't know what can I do it. Any fix? Thank in advance.

awojnowski · 2013-07-16T23:43:54Z

3D3D876416369E6234F235A7483116074442365565DC8E47777B7DC2AAD3432D32FB8BF99F50E69.88D88.884884
95955B2D98434385FB7431903D82EA76C3911F289DB962463FD353DB4CAD09E6F29234DF8EA0F68.99B99.993993
656546EFD589B018A64C383752F6D4A9596D16F9A4E7CA8BD58660D507F85376EC7AD39556997A5.D8ED8.D84D84

Above are some sample signatures with this new length.

Baqan · 2013-07-16T23:44:38Z

Some new real signature keys with length 92:

3030A80632B4979C3BA73C76585E3DD530FBF48EF357E4970C4AD86027D0D2A20ED25FE0054D502.58558.581581
9E9E073BF64A279A8278E80D31D691F345B175ADDD802ED6D1A9B089796D16ABFCBE3B4A98A818B.93893.936936
F6F6F965615E2DFA775F9AE2F6CD1C153FFAFD0F7F27F81F1F5192F1DEC80C42FED1E183822B044.6E26E.6EA6EA

phihag · 2013-07-16T23:50:24Z

@speedyapocalypse @Baqan Can you post a couple of pairs of both sample and real signatures? That would be immensely helpful and allow us to resolve this issue almost immediately. Having just one (real or input) is not that helpful, unfortunately.

Baqan · 2013-07-16T23:58:10Z

@phihag Here is the HTML code from "url_encoded_fmt_stream_map" Vevo video with length 92:

awojnowski · 2013-07-17T00:07:50Z

@phihag I'd definitely like to provide both as obviously just providing one isn't much help. However, how would one go about doing this? When I attempt to see the URL of the streaming video through, say, the network inspector within Chrome, the videos playing have an itag of 140 and 134 and the links played are not the ones inside of the url_encoded_fmt_stream_map.

vinipsmaker · 2013-07-17T01:58:13Z

This video is broken also:

youtube-dl -f 43 -t http://www.youtube.com/watch?v=J9XwFecNXyU --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-f', '43', '-t', 'http://www.youtube.com/watch?v=J9XwFecNXyU', '--verbose']
[debug] youtube-dl version 2013.07.12
[debug] Python version 3.3.2 - Linux-3.9.9-1-ARCH-i686-with-arch-Arch-Linux
[debug] Proxy map: {}
[youtube] Setting language
[youtube] J9XwFecNXyU: Downloading video webpage
[youtube] J9XwFecNXyU: Downloading video info webpage
[youtube] J9XwFecNXyU: Extracting video information
[youtube] J9XwFecNXyU: Encrypted signatures detected.
[youtube] encrypted signature length 92 (79.5), itag 46, html5 player vflQw-fB4
ERROR: Unable to decrypt signature, key length 92 not supported; retrying might work; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/lib/python3.3/site-packages/youtube_dl/YoutubeDL.py", line 312, in extract_info
ie_result = ie.extract(url)
File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/common.py", line 95, in extract
return self._real_extract(url)
File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/youtube.py", line 594, in _real_extract
signature = self._decrypt_signature(url_data['s'][0])
File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/youtube.py", line 200, in _decrypt_signature
raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
youtube_dl.utils.ExtractorError: Unable to decrypt signature, key length 92 not supported; retrying might work; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output.

ghost · 2013-07-17T02:48:27Z

$ ./youtube-dl --verbose https://www.youtube.com/watch?v=LrUvu1mlWco
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'https://www.youtube.com/watch?v=LrUvu1mlWco']
[debug] youtube-dl version 2013.07.12
[debug] Python version 2.7.1 - Darwin-11.4.2-x86_64-i386-64bit
[debug] Proxy map: {}
[youtube] Setting language
[youtube] LrUvu1mlWco: Downloading video webpage
[youtube] LrUvu1mlWco: Downloading video info webpage
[youtube] LrUvu1mlWco: Extracting video information
[youtube] LrUvu1mlWco: Encrypted signatures detected.
[youtube] encrypted signature length 92 (79.5), itag 46, html5 player vflQw-fB4
ERROR: Unable to decrypt signature, key length 92 not supported; retrying might work; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "./youtube-dl/youtube_dl/YoutubeDL.py", line 312, in extract_info
ie_result = ie.extract(url)
File "./youtube-dl/youtube_dl/extractor/common.py", line 95, in extract
return self._real_extract(url)
File "./youtube-dl/youtube_dl/extractor/youtube.py", line 594, in _real_extract
signature = self._decrypt_signature(url_data['s'][0])
File "./youtube-dl/youtube_dl/extractor/youtube.py", line 200, in _decrypt_signature
raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
ExtractorError: Unable to decrypt signature, key length 92 not supported; retrying might work; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output.

patrickslin · 2013-07-17T05:09:03Z

Two 92 length sig pairs:

F9F9B6E6FD47029957AB911A964CC20D95A181A5D37A2DBEFD67D403DB0E8BE4F4910053E4E8A79.0B70B.0B80B8
69B6E6FD47029957AB911A9F4CC20D95A181A5D3.A2DBEFD67D403DB0E8BE4F4910053E4E8A7980B7

1212719B8F2A427D03510DCE7443E88F641398346564B1D3342F2F79CEC074BCF5DDE73C81387BC.D66D6.D65D65
42719B8F2A427D03510DCE7143E88F6413983465.4B1D3342F2F79CEC074BCF5DDE73C81387BC5D66

Looks pretty straightforward to decrypt...

firmanelhakim · 2013-07-17T05:41:31Z

@patrickslin how do you find those sig pairs?

awojnowski · 2013-07-17T05:48:43Z

Here is working Python code to decrypt those two signature pairs. I've tested and this works in production for all Vevo videos.

Python:

signature = s[25] + s[3:25] + s[0] + s[26:42] + s[79] + s[43:79] + s[91] + s[80:83];

JavaScript Equivalent:

signature = s[25] + s.substring(3,25) + s[0] + s.substring(26,42) + s[79] + s.substring(43,79) + s[91] + s.substring(80,83);

WithM · 2013-07-17T05:52:48Z

here is working JavaScript code to decrypt all signature..

i found this code in youtube html5 player...

function dj(a)
{
a = a.split("");
a = a.slice(2);
a = a.reverse();
a = a.slice(3);
a = ej(a, 9);
a = a.slice(3);
a = ej(a, 43);
a = a.slice(3);
a = a.reverse();
a = ej(a, 23);
return a.join("")
}

function ej(a, b)
{
    var c = a[0];
    a[0] = a[b % a.length];
    a[b] = c;
    return a
};

patrickslin · 2013-07-17T05:57:45Z

@firmanelhakim I used @jaimeMF script here https://gist.github.com/jaimeMF/039134145e38dd9dcec6 in the browser javascript console of the interested page, in this case a Beyonce Vevo video. The network requests, along with the decrypted signature query parameter is found when you play the video. Match up the appropriate itags to get the encrypted/decrypted signature pairs. For the 92 length sig, it's pretty straightforward since the decrypt sig pattern matches the encrypted sig pretty closely. I did have to modify that script a bit since the 92 sig has two '.' instead of one.

patrickslin · 2013-07-17T05:59:44Z

@speedyapocalypse Cool. Exactly what I got. :)

awojnowski · 2013-07-17T06:03:37Z

@WithM posted the key to all of this though. I just integrated that JavaScript code into my application which parses using JavaScript and it works like a charm. Looks like it also works for all signature lengths. Perhaps we should consider moving over to that algorithm instead of individually having code to handle each signature length.

patrickslin · 2013-07-17T06:04:47Z

@speedyapocalypse Saw that. Works for me also.

awojnowski · 2013-07-17T06:16:42Z

Here's the new algorithm that I suggest we use from now on thanks to @WithM:

Python

def voodoo(a, b):
    c = a[0];
    a[0] = a[b % len(a)];
    a[b] = c;
    return a;

def crack_signature(signature):
    s = signature.split("");
    s = s[2:len(s)];
    s = s[::-1];
    s = s[3:len(s)];
    s = voodoo(s, 9);
    s = s[3:len(s)];
    s = voodoo(s, 43);
    s = s[3:len(s)];
    s = s[::-1];
    s = voodoo(s, 23);
    s = "".join(s);
    return s;

JavaScript:

function crack_signature(signature) {

    var s = signature.split("");
    s = s.slice(2);
    s = s.reverse();
    s = s.slice(3);
    s = voodoo(s, 9);
    s = s.slice(3);
    s = voodoo(s, 43);
    s = s.slice(3);
    s = s.reverse();
    s = voodoo(s, 23);
    return s.join("");

}

function voodoo(a, b) {

    var c = a[0];
    a[0] = a[b % a.length];
    a[b] = c;
    return a;

}

And a simple Python test:

def voodoo(a, b):
    c = a[0];
    a[0] = a[b % len(a)];
    a[b] = c;
    return a;

def crack_signature(signature):
    s = signature.split("");
    s = s[2:len(s)];
    s = s[::-1];
    s = s[3:len(s)];
    s = voodoo(s, 9);
    s = s[3:len(s)];
    s = voodoo(s, 43);
    s = s[3:len(s)];
    s = s[::-1];
    s = voodoo(s, 23);
    s = "".join(s);
    return s;

signature = "F9F9B6E6FD47029957AB911A964CC20D95A181A5D37A2DBEFD67D403DB0E8BE4F4910053E4E8A79.0B70B.0B80B8";
print crack_signature(signature);
print "69B6E6FD47029957AB911A9F4CC20D95A181A5D3.A2DBEFD67D403DB0E8BE4F4910053E4E8A7980B7";

phihag · 2013-07-17T08:56:17Z

@Forever-Young Thank you very much! I was under the impression that YouTube changed the code with each HTML5 player it serves, but apparently, it isn't so.

This reverts commit fe6fad1 and closes #1066.

phihag · 2013-07-17T09:28:17Z

Support for length 92 has been added in youtube-dl 2013.07.17.1. Type

sudo youtube-dl -U

to update.

Kajbende · 2014-01-26T17:23:49Z

http://jitender6feb.blogspot.in/2014/01/please-help-me-for-i-have-only-idm.html

Please Help me for

i have only idm dwnldata folder without reg(window was crashed but copy dwnldata folder by bartPe)

C:\Documents and Settings\Administrator\Application Data\IDM\DwnlData\Administrator

and when open any folder found .log file

eg 2.log,
45.log

and also found some parts like
r4---sn-huoa-qxae_googlevideo_com, r4---sn-huoa-qxae_googlevideo_com1,......

when its open found the codings
eg
Url http://r1---sn-huoa-qxae.googlevideo.com /videoplayback?ms=au&expire=1388896239&source=youtube&upn=n72ksIfoEJ0&mv=m&id=e5f895bf66b7af96&sparams=algorithm%2Cburst%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=919110%2C932265%2C915114%2C916611%2C909717%2C932295%2C938630%2C936912%2C936910%2C923305%2C936913%2C907231%2C907240%2C921090&algorithm=throttle-factor&burst=40&sver=3&ipbits=0&itag=17&key=yt5&ip=myipaddress&mt=1388872742&factor=1.25&signature=F4D7BE52F9B2BD248ADFF5910EFC299AEA72CB97.5A1D518D0E9AB39A68D773F4615A6E5D4BA8258A

i have many search on internet but not successful, so how to download the uncomplete video by signature or id or any other Method

Eg.....by ScreenShot

AND
Single Screenshot for the Eg.....

jaimeMF · 2014-01-26T18:01:37Z

@Kajbende please don't post questions about other software in this bug tracker, we don't answer them. If you want to download a youtube video, you just need to install youtube-dl and run youtube-dl http://www.youtube.com/watch?v=BaW_jenozKc. If you have any problem while using youtube-dl, please open a new issue and we'll try to help you

chaoming · 2015-03-05T01:30:43Z

@awojnowski in which Javascript variable I can pick up the 92 signature?

awojnowski mentioned this issue Jul 16, 2013

YouTube Signature Length Changed Once Again For Vevo Content #1062

Closed

phihag mentioned this issue Jul 16, 2013

Unable to decrypt signature, key length 92 not supported #1061

Closed

Forever-Young mentioned this issue Jul 17, 2013

[youtube] improved decrypt_signature, closes #1060 #1063

Merged

This was referenced Jul 17, 2013

unable to decrypt signature key length 92 not supported #1065

Closed

signature length 90 #1064

Closed

phihag closed this as completed in fe6fad1 Jul 17, 2013

phihag added a commit that referenced this issue Jul 17, 2013

Revert "[youtube] improved decrypt_signature, closes #1060"

be547e1

This reverts commit fe6fad1 and closes #1066.

phihag added a commit that referenced this issue Jul 17, 2013

[youtube] Add code for signature 92 (Closes #1060)

88d4111

phihag mentioned this issue Jul 17, 2013

the update has stopped working again as of 12pm EAT : key length 92 not supported #1067

Closed

SthephanShinkufag referenced this issue in SthephanShinkufag/Dollchan-Extension-Tools Feb 13, 2014

Fix youtube html5 parser

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Error downloading YouTube videos with new signature length 92 #1060

Error downloading YouTube videos with new signature length 92 #1060

Baqan commented Jul 16, 2013

awojnowski commented Jul 16, 2013

Baqan commented Jul 16, 2013

phihag commented Jul 16, 2013

Baqan commented Jul 16, 2013

awojnowski commented Jul 17, 2013

vinipsmaker commented Jul 17, 2013

ghost commented Jul 17, 2013

patrickslin commented Jul 17, 2013

firmanelhakim commented Jul 17, 2013

awojnowski commented Jul 17, 2013

WithM commented Jul 17, 2013

patrickslin commented Jul 17, 2013

patrickslin commented Jul 17, 2013

awojnowski commented Jul 17, 2013

patrickslin commented Jul 17, 2013

awojnowski commented Jul 17, 2013

phihag commented Jul 17, 2013

phihag commented Jul 17, 2013

Kajbende commented Jan 26, 2014

jaimeMF commented Jan 26, 2014

chaoming commented Mar 5, 2015

Error downloading YouTube videos with new signature length 92 #1060

Error downloading YouTube videos with new signature length 92 #1060

Comments

Baqan commented Jul 16, 2013

awojnowski commented Jul 16, 2013

Baqan commented Jul 16, 2013

phihag commented Jul 16, 2013

Baqan commented Jul 16, 2013

awojnowski commented Jul 17, 2013

vinipsmaker commented Jul 17, 2013

ghost commented Jul 17, 2013

patrickslin commented Jul 17, 2013

firmanelhakim commented Jul 17, 2013

awojnowski commented Jul 17, 2013

WithM commented Jul 17, 2013

patrickslin commented Jul 17, 2013

patrickslin commented Jul 17, 2013

awojnowski commented Jul 17, 2013

patrickslin commented Jul 17, 2013

awojnowski commented Jul 17, 2013

phihag commented Jul 17, 2013

phihag commented Jul 17, 2013

Kajbende commented Jan 26, 2014

jaimeMF commented Jan 26, 2014

chaoming commented Mar 5, 2015