Error during format extraction: "Cannot decrypt signature without player_url" #13270

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opened 2026-02-21 05:43:44 -05:00 by deekerman · 1 comment

deekerman commented

2026-02-21 05:43:44 -05:00

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Originally created by @VADemon on GitHub (Mar 29, 2018).

I've verified and I assure that I'm running youtube-dl 2018.03.26.1

Before submitting an issue make sure you have:

At least skimmed through the README, most notably the FAQ and BUGS sections
Searched the bugtracker for similar issues including closed ones
Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

Bug report (encountered problems with youtube-dl)
Site support request (request for adding support for a new site)
Feature request (request for a new functionality)
Question
Other

[debug] System config: []
[debug] User config: ['--limit-rate', '10M', '-f', 'bestvideo[height<=720]+bestaudio/bestvideo[width<=1920]+bestaudio/bestvideo+bestaudio/best']
[debug] Custom config: []
[debug] Command-line args: ['-F', '-v', '--write-pages', 'https://www.youtube.com/watch?v=Yt5_JzpWdZ0']
[debug] Encodings: locale cp1251, fs mbcs, out cp1251, pref cp1251
[debug] youtube-dl version 2018.03.26.1
[debug] Python version 3.4.4 (CPython) - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-75504-gaa6c43f, ffprobe N-75504-gaa6c43f
[debug] Proxy map: {}
[youtube] Yt5_JzpWdZ0: Downloading webpage
[youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_watchhl=en_disable_polymer=true_gl=US_has_verified=1_v=Yt5_JzpWdZ0_bpctr=9999999999.dump
[youtube] Yt5_JzpWdZ0: Downloading video info webpage
[youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_get_video_infoel=info_disable_polymer=true_sts=17616_ps=default_eurl=_gl=US_hl=en_video_id=Yt5_JzpWdZ0.dump
[youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_get_video_infoel=embedded_disable_polymer=true_sts=17616_ps=default_eurl=_gl=US_hl=en_video_id=Yt5_JzpWdZ0.dump
[youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_get_video_infoel=detailpage_disable_polymer=true_sts=17616_ps=default_eurl=_gl=US_hl=en_video_id=Yt5_JzpWdZ0.dump
[youtube] Yt5_JzpWdZ0: Extracting video information
[youtube] Yt5_JzpWdZ0: Downloading m3u8 information
[youtube] Saving request to Yt5_JzpWdZ0_https_-_manifest.googlevideo.com_api_manifest_hls_variant_ei_tCC9WvKrBM7vgAeKoKuIDA_tx_9474469_ip_2a01%3A4f8%3A212%3A2f1d%3A88%3A%3A41_keepalive_yes_id_Yt5_JzpWdZ0.0_manifest_duration_30_maudio_113b3d361a7c55eb1f07e36ed07c807b.dump
WARNING: [youtube] Yt5_JzpWdZ0: Skipping DASH manifest: ExtractorError('Cannot decrypt signature without player_url; 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.',)
[info] Available formats for Yt5_JzpWdZ0:
format code  extension  resolution note
91           mp4        256x144    HLS  197k , avc1.42c00b, 30.0fps, mp4a.40.5@ 48k
92           mp4        426x240    HLS  338k , avc1.4d4015, 30.0fps, mp4a.40.5@ 48k
93           mp4        640x360    HLS  829k , avc1.4d401e, 30.0fps, mp4a.40.2@128k
94           mp4        854x480    HLS 1380k , avc1.4d401f, 30.0fps, mp4a.40.2@128k
95           mp4        1280x720   HLS 2593k , avc1.4d401f, 30.0fps, mp4a.40.2@256k (best)

Stream #1: https://www.youtube.com/watch?v=Yt5_JzpWdZ0
2: https://www.youtube.com/watch?v=gtEyw7yv-hg
3: https://www.youtube.com/watch?v=xc9vmAsenNU
Basically all streams of this channel reproduce the error: https://www.youtube.com/user/YellowBrickCinema/featured

Description

youtube-dl outputs this error: WARNING: [youtube] xc9vmAsenNU: Skipping DASH manifest: ExtractorError('Cannot decrypt signature without player_url; when trying to extract available formats.

However, it's not related to the DNS request flood issue #15914 and downloading of the streams via FFMpeg works fine. Looks to me as if only the Format extraction fails, because it only shows HLS streams and a few other streams I tested additionally offer the mp4 option AND do not generate this error.

E.g. https://www.youtube.com/watch?v=RtU_mdL2vBM has formats 300,301 available that are "old" format mp4 streams (avc1.4d4020, avc1.64002a) and respective HLS streams 91,92,93,94: avc1.42c00b, avc1.4d4015, avc1.4d401e, avc1.4d401f.

Yt5_JzpWdZ0 from the log above only shows HLS 91-95 streams.

gtE.log
xc9.log
Yt5.log
Yt5_dumppages.zip

Originally created by @VADemon on GitHub (Mar 29, 2018). - [x] I've **verified** and **I assure** that I'm running youtube-dl **2018.03.26.1** ### Before submitting an *issue* make sure you have: - [x] At least skimmed through the [README](https://github.com/rg3/youtube-dl/blob/master/README.md), **most notably** the [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections - [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones - [x] Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser ### What is the purpose of your *issue*? - [x] Bug report (encountered problems with youtube-dl) - [ ] Site support request (request for adding support for a new site) - [ ] Feature request (request for a new functionality) - [ ] Question - [ ] Other --- ``` [debug] System config: [] [debug] User config: ['--limit-rate', '10M', '-f', 'bestvideo[height<=720]+bestaudio/bestvideo[width<=1920]+bestaudio/bestvideo+bestaudio/best'] [debug] Custom config: [] [debug] Command-line args: ['-F', '-v', '--write-pages', 'https://www.youtube.com/watch?v=Yt5_JzpWdZ0'] [debug] Encodings: locale cp1251, fs mbcs, out cp1251, pref cp1251 [debug] youtube-dl version 2018.03.26.1 [debug] Python version 3.4.4 (CPython) - Windows-7-6.1.7601-SP1 [debug] exe versions: ffmpeg N-75504-gaa6c43f, ffprobe N-75504-gaa6c43f [debug] Proxy map: {} [youtube] Yt5_JzpWdZ0: Downloading webpage [youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_watchhl=en_disable_polymer=true_gl=US_has_verified=1_v=Yt5_JzpWdZ0_bpctr=9999999999.dump [youtube] Yt5_JzpWdZ0: Downloading video info webpage [youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_get_video_infoel=info_disable_polymer=true_sts=17616_ps=default_eurl=_gl=US_hl=en_video_id=Yt5_JzpWdZ0.dump [youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_get_video_infoel=embedded_disable_polymer=true_sts=17616_ps=default_eurl=_gl=US_hl=en_video_id=Yt5_JzpWdZ0.dump [youtube] Saving request to Yt5_JzpWdZ0_https_-_www.youtube.com_get_video_infoel=detailpage_disable_polymer=true_sts=17616_ps=default_eurl=_gl=US_hl=en_video_id=Yt5_JzpWdZ0.dump [youtube] Yt5_JzpWdZ0: Extracting video information [youtube] Yt5_JzpWdZ0: Downloading m3u8 information [youtube] Saving request to Yt5_JzpWdZ0_https_-_manifest.googlevideo.com_api_manifest_hls_variant_ei_tCC9WvKrBM7vgAeKoKuIDA_tx_9474469_ip_2a01%3A4f8%3A212%3A2f1d%3A88%3A%3A41_keepalive_yes_id_Yt5_JzpWdZ0.0_manifest_duration_30_maudio_113b3d361a7c55eb1f07e36ed07c807b.dump WARNING: [youtube] Yt5_JzpWdZ0: Skipping DASH manifest: ExtractorError('Cannot decrypt signature without player_url; 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.',) [info] Available formats for Yt5_JzpWdZ0: format code extension resolution note 91 mp4 256x144 HLS 197k , avc1.42c00b, 30.0fps, mp4a.40.5@ 48k 92 mp4 426x240 HLS 338k , avc1.4d4015, 30.0fps, mp4a.40.5@ 48k 93 mp4 640x360 HLS 829k , avc1.4d401e, 30.0fps, mp4a.40.2@128k 94 mp4 854x480 HLS 1380k , avc1.4d401f, 30.0fps, mp4a.40.2@128k 95 mp4 1280x720 HLS 2593k , avc1.4d401f, 30.0fps, mp4a.40.2@256k (best) ``` --- Stream #1: https://www.youtube.com/watch?v=Yt5_JzpWdZ0 2: https://www.youtube.com/watch?v=gtEyw7yv-hg 3: https://www.youtube.com/watch?v=xc9vmAsenNU Basically all streams of this channel reproduce the error: https://www.youtube.com/user/YellowBrickCinema/featured --- ### Description youtube-dl outputs this error: WARNING: [youtube] xc9vmAsenNU: Skipping DASH manifest: ExtractorError('Cannot decrypt signature without player_url; when trying to extract available formats. However, it's not related to the DNS request flood issue #15914 and downloading of the streams via FFMpeg works fine. Looks to me as if only the Format extraction fails, because it only shows HLS streams and a few other streams I tested additionally offer the mp4 option AND do not generate this error. E.g. https://www.youtube.com/watch?v=RtU_mdL2vBM has formats 300,301 available that are "old" format mp4 streams (avc1.4d4020, avc1.64002a) and respective HLS streams 91,92,93,94: avc1.42c00b, avc1.4d4015, avc1.4d401e, avc1.4d401f. Yt5_JzpWdZ0 from the log above only shows HLS 91-95 streams. [gtE.log](https://github.com/rg3/youtube-dl/files/1861857/gtE.log) [xc9.log](https://github.com/rg3/youtube-dl/files/1861858/xc9.log) [Yt5.log](https://github.com/rg3/youtube-dl/files/1861859/Yt5.log) [Yt5_dumppages.zip](https://github.com/rg3/youtube-dl/files/1861860/Yt5_dumppages.zip)

deekerman closed this issue

2026-02-21 05:43:46 -05:00

deekerman commented

2026-02-21 05:43:50 -05:00

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@dstftw commented on GitHub (Mar 29, 2018):

This is not an error is the first place. DASH live streams are not supported anyway. Also this video does not have 300 and 301 itags.

@dstftw commented on GitHub (Mar 29, 2018): This is not an error is the first place. DASH live streams are not supported anyway. Also this video does not have 300 and 301 itags.

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starred/youtube-dl#13270

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