YouTube bug: 'Unable to extract Initial JS player signature function name' #18375

SpiralBrad · 2018-12-02T21:36:25Z

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Before submitting an issue make sure you have:

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What is the purpose of your issue?

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

C:\DOS\RUN>youtube-dl --verbose --format "bestvideo+bestaudio[ext=m4a]/bestvideo+bestaudio/best" --merge-output-format mp4 https://www.youtube.com/watch?v=ACtcJJ85y9U
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--format', 'bestvideo+bestaudio[ext=m4a]/bestvideo+bestaudio/best', '--merge-output-format', 'mp4', 'https://www.youtube.com/watch?v=ACtcJJ85y9U']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2018.10.05
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134
[debug] exe versions: ffmpeg 4.0.1, ffprobe 4.0
[debug] Proxy map: {}
[youtube] ACtcJJ85y9U: Downloading webpage
[youtube] ACtcJJ85y9U: Downloading video info webpage
[youtube] {43} signature length 46.40, html5 player vflBGiA6J
[youtube] ACtcJJ85y9U: Downloading player https://www.youtube.com/yts/jsbin/player-vflBGiA6J/en_US/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1221, in _decrypt_signature
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1130, in _extract_signature_function
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1193, in _parse_sig_js
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\common.py", line 977, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by RegexNotFoundError('Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.',)); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1221, in _decrypt_signature
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1130, in _extract_signature_function
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1193, in _parse_sig_js
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\common.py", line 977, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1221, in _decrypt_signature
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1130, in _extract_signature_function
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1193, in _parse_sig_js
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\common.py", line 977, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\YoutubeDL.py", line 792, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\common.py", line 507, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1814, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1231, in _decrypt_signature
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1221, in _decrypt_signature
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1130, in _extract_signature_function
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\youtube.py", line 1193, in _parse_sig_js
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp5xdqinp2\build\youtube_dl\extractor\common.py", line 977, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by RegexNotFoundError('Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.',)); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
...
<end of log>

Description of your issue, suggested solution and other information

This is an issue with one specific youtube vid. Other videos with this commandline work fine, so... I'm not sure what it is about the youtube output for this vid which is messing with youtube-dl.

The error is that youtube-dl is 'Unable to extract Initial JS player signature function name' - from the player JS, https://www.youtube.com/yts/jsbin/player-vflBGiA6J/en_US/base.js

Full log is posted above.

Again it works fine with other videos, but this one's output confuses youtube-dl.

SpiralBrad · 2018-12-02T21:42:14Z

Whoops apologies; had updated right before. Guess it didn't go.

evexoio · 2018-12-03T08:20:28Z

Same command works with me on latest version.

$ youtube-dl --verbose --format "bestvideo+bestaudio[ext=m4a]/bestvideo+bestaudio/best" --merge-output-format mp4 https://www.youtube.com/watch?v=ACtcJJ85y9U
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--format', 'bestvideo+bestaudio[ext=m4a]/bestvideo+bestaudio/best', '--merge-output-format', 'mp4', 'https://www.youtube.com/watch?v=ACtcJJ85y9U']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.12.03
[debug] Python version 3.6.3 (CPython) - Darwin-17.7.0-x86_64-i386-64bit
[debug] exe versions: avconv 12, avprobe 12, ffmpeg present, ffprobe present, phantomjs 2.1.1
[debug] Proxy map: {}
[youtube] ACtcJJ85y9U: Downloading webpage
[youtube] ACtcJJ85y9U: Downloading video info webpage
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {43} signature length 46.40, html5 player None
[youtube] ACtcJJ85y9U: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflUOOqs8/en_US/base.js
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {18} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {36} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {17} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {135} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {244} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {134} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {243} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {133} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {242} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {160} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {278} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {140} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {171} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {249} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {250} signature length 46.40, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {251} signature length 46.40, html5 player None
[debug] Invoking downloader on 'https://r2---sn-nvqxuxa-cxte.googlevideo.com/videoplayback?txp=5432432&requiressl=yes&keepalive=yes&sparams=aitags%2Cclen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&ipbits=0&source=youtube&mv=m&fvip=2&ms=au%2Crdu&ip=93.126.213.165&key=yt6&lmt=1540652345745182&mm=31%2C29&mn=sn-nvqxuxa-cxte%2Csn-hgn7rne6&id=o-AE9Ff1yscLDMNLCz1mb58sWa0ySS_FM9SfKnYW7zaKny&dur=3198.880&mt=1543825094&gir=yes&clen=57266641&expire=1543846750&itag=244&pl=24&beids=9466588&c=WEB&initcwndbps=206250&mime=video%2Fwebm&aitags=133%2C134%2C135%2C160%2C242%2C243%2C244%2C278&ei=_uYEXPihMIaDhAeW3oKADQ&signature=B93A680891277461E35F0FC967C7B516197D5B25.0ED6DE072D06981FC58D9C2312C1C23017B3EF1D&ratebypass=yes'
[download] Destination: 01. Ο Καραγκιόζης Προφήτης-ACtcJJ85y9U.f244.webm
[download]   0.8% of 54.61MiB at 179.04KiB/s ETA 05:09

Can you please include what's the error you're getting after you updated?

dstftw closed this Dec 2, 2018

dstftw added the outdated-version label Dec 2, 2018

ytdl-org / youtube-dl

YouTube bug: 'Unable to extract Initial JS player signature function name' #18375

YouTube bug: 'Unable to extract Initial JS player signature function name' #18375

SpiralBrad commented Dec 2, 2018

SpiralBrad commented Dec 2, 2018

evexoio commented Dec 3, 2018

ytdl-org / youtube-dl

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YouTube bug: 'Unable to extract Initial JS player signature function name' #18375

YouTube bug: 'Unable to extract Initial JS player signature function name' #18375

Comments

SpiralBrad commented Dec 2, 2018

Please follow the guide below

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.12.03. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

Before submitting an issue make sure you have:

What is the purpose of your issue?

The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Description of your issue, suggested solution and other information

SpiralBrad commented Dec 2, 2018

evexoio commented Dec 3, 2018

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Make sure you are using the latest version: run `youtube-dl --version` and ensure your version is 2018.12.03. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.