Failed to download video #14679

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opened 2026-02-21 06:35:44 -05:00 by deekerman · 1 comment

deekerman commented

2026-02-21 06:35:44 -05:00

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Originally created by @lamensje on GitHub (Sep 23, 2018).

My CMD output with verbose flag:

"I:\Program Installers\YouTube-DL\youtube-dl.exe" -o "PATH/%(title)s.%(ext)s" https://www.youtube.com/playlist?list=PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR --playlist-start 46 --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-o', 'PATH/%(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR', '--playlist-start', '46', '--verbose']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2018.06.04
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134
[debug] exe versions: ffmpeg N-91254-g2bd26dea66, ffprobe N-91254-g2bd26dea66
[debug] Proxy map: {}
[youtube:playlist] PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR: Downloading webpage
[download] Downloading playlist: Ideas
[youtube:playlist] PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR: Downloading page #1
[youtube:playlist] playlist Ideas: Downloading 149 videos
[download] Downloading video 1 of 149
[youtube] i2IqtFRJsiU: Downloading webpage
[youtube] i2IqtFRJsiU: Downloading video info webpage
[youtube] {22} signature length 43.44, html5 player vflUpPEZ9
[youtube] i2IqtFRJsiU: Downloading player https://www.youtube.com/yts/jsbin/player-vflUpPEZ9/en_US/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1199, in _decrypt_signature
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1110, in _extract_signature_function
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1171, in _parse_sig_js
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\common.py", line 880, 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\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1199, in _decrypt_signature
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1110, in _extract_signature_function
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1171, in _parse_sig_js
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\common.py", line 880, 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\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1199, in _decrypt_signature
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1110, in _extract_signature_function
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1171, in _parse_sig_js
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\common.py", line 880, 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.

Originally created by @lamensje on GitHub (Sep 23, 2018). My CMD output with verbose flag: "I:\Program Installers\YouTube-DL\youtube-dl.exe" -o "*PATH*/%(title)s.%(ext)s" https://www.youtube.com/playlist?list=PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR --playlist-start 46 --verbose [debug] System config: [] [debug] User config: [] [debug] Custom config: [] [debug] Command-line args: ['-o', '*PATH*/%(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR', '--playlist-start', '46', '--verbose'] [debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252 [debug] youtube-dl version 2018.06.04 [debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134 [debug] exe versions: ffmpeg N-91254-g2bd26dea66, ffprobe N-91254-g2bd26dea66 [debug] Proxy map: {} [youtube:playlist] PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR: Downloading webpage [download] Downloading playlist: Ideas [youtube:playlist] PLFyi2v9igyDDCyozHyQjXZs95mWeIWiQR: Downloading page #1 [youtube:playlist] playlist Ideas: Downloading 149 videos [download] Downloading video 1 of 149 [youtube] i2IqtFRJsiU: Downloading webpage [youtube] i2IqtFRJsiU: Downloading video info webpage [youtube] {22} signature length 43.44, html5 player vflUpPEZ9 [youtube] i2IqtFRJsiU: Downloading player https://www.youtube.com/yts/jsbin/player-vflUpPEZ9/en_US/base.js ERROR: Signature extraction failed: Traceback (most recent call last): File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1199, in _decrypt_signature File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1110, in _extract_signature_function File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1171, in _parse_sig_js File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\common.py", line 880, 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\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1199, in _decrypt_signature File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1110, in _extract_signature_function File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1171, in _parse_sig_js File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\common.py", line 880, 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\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1199, in _decrypt_signature File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1110, in _extract_signature_function File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\youtube.py", line 1171, in _parse_sig_js File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmptg2apcao\build\youtube_dl\extractor\common.py", line 880, 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.

deekerman

2026-02-21 06:35:44 -05:00

closed this issue
added the
outdated-version
label

deekerman commented

2026-02-21 06:35:49 -05:00

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@lamensje commented on GitHub (Sep 23, 2018):

updating fixed the problem.
Thanks for fixing this bug!

@lamensje commented on GitHub (Sep 23, 2018): updating fixed the problem. Thanks for fixing this bug!

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starred/youtube-dl#14679

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