yt-dlp: Hanging after "Native nsig extraction failed: Trying with PhantomJS"

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I’m reporting a bug unrelated to a specific site
I’ve verified that I’m running yt-dlp version 2022.08.19 (update instructions) or later (specify commit)
I’ve checked that all provided URLs are playable in a browser with the same IP and same login details
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. DO NOT post duplicates
I’ve read the guidelines for opening an issue

Provide a description that is worded well enough to be understood

Hi last days i see Error and yt-dlp stop work. Some Videos work… other stop with error and we Quit with strg+c we cant found other Bug Report for “Native nsig extraction failed”

we use in script yt-dlp -U yt-dlp -civw --write-description --write-info-json --write-annotations --write-thumbnail --all-subs --sub-langs de,en,de-en*,live_chat --write-subs -o “%(channel)s/%(upload_date)s %(title)s/%(title)s.%(ext)s” --live-from-start --write-comments -v “https://www.youtube.com/watch?v=DebytkImQrw”

Provide verbose output that clearly demonstrates the problem

Run your yt-dlp command with -vU flag added (yt-dlp -vU <your command line>)
Copy the WHOLE output (starting with [debug] Command-line config) and insert it below

Complete Verbose Output

yt-dlp -vU
[debug] Command-line config: ['-vU']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out UTF-8, error UTF-8, screen UTF-8
[debug] yt-dlp version 2022.08.19 [48c88e0] (zip)
[debug] Python 3.7.3 (CPython 64bit) - Linux-4.19.0-21-amd64-x86_64-with-debian-10.12 (glibc 2.28)
[debug] Checking exe version: ffmpeg -bsfs
[debug] Checking exe version: ffprobe -bsfs
[debug] exe versions: ffmpeg 4.1.9-0, ffprobe 4.1.9-0, phantomjs 1000, rtmpdump 2.4
[debug] Optional libraries: certifi-2018.08.24, pyxattr-0.6.1, sqlite3-2.6.0
[debug] Proxy map: {}
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2022.08.19, Current version: 2022.08.19
yt-dlp is up to date (2022.08.19)



yt-dlp -civw --write-description --write-info-json --write-annotations --write-thumbnail --all-subs --sub-langs de,en,de-en*,live_chat --write-subs -o "%(channel)s/%(upload_date)s %(title)s/%(title)s.%(ext)s" --live-from-start --write-comments -v "https://www.youtube.com/watch?v=DebytkImQrw"
[debug] Command-line config: ['-civw', '--write-description', '--write-info-json', '--write-annotations', '--write-thumbnail', '--all-subs', '--sub-langs', 'de,en,de-en*,live_chat', '--write-subs', '-o', '%(channel)s/%(upload_date)s %(title)s/%(title)s.%(ext)s', '--live-from-start', '--write-comments', '-v', 'https://www.youtube.com/watch?v=DebytkImQrw']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out UTF-8, error UTF-8, screen UTF-8
[debug] yt-dlp version 2022.08.19 [48c88e0] (zip)
[debug] Python 3.7.3 (CPython 64bit) - Linux-4.19.0-21-amd64-x86_64-with-debian-10.12 (glibc 2.28)
[debug] Checking exe version: ffmpeg -bsfs
[debug] Checking exe version: ffprobe -bsfs
[debug] exe versions: ffmpeg 4.1.9-0, ffprobe 4.1.9-0, phantomjs 1000, rtmpdump 2.4
[debug] Optional libraries: certifi-2018.08.24, pyxattr-0.6.1, sqlite3-2.6.0
[debug] Proxy map: {}
[debug] [youtube] Extracting URL: https://www.youtube.com/watch?v=DebytkImQrw
[youtube] DebytkImQrw: Downloading webpage
[youtube] DebytkImQrw: Downloading android player API JSON
[debug] Loading youtube-nsig.009f1d77 from cache
WARNING: [youtube] DebytkImQrw: Native nsig extraction failed: Trying with PhantomJS
         n = 5dwFHw8aFWQUQtffRq ; player = https://www.youtube.com/s/player/009f1d77/player_ias.vflset/en_US/base.js
[debug] [youtube] No terminating paren } in: {try{0<c[52]&&(7<c[88]&&((0,c[29])(c[85],c[92])...)(c[31]),c[41],c[88],c[75],(0,c[35])())}catch(d){}; please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
[youtube] DebytkImQrw: Executing signature code
[debug] [youtube] PhantomJS command line: phantomjs --ssl-protocol=any /tmp/tmps2s7uesa
^C
ERROR: Interrupted by user

About this issue

Original URL
State: open
Created 2 years ago
Reactions: 2
Comments: 19 (8 by maintainers)

Commits related to this issue

[jsinterp] Implement timeout Workaround for #4716 — committed to yt-dlp/yt-dlp by pukkandan 2 years ago

Most upvoted comments

I’m getting the No terminating paren error as well:

[debug] Command-line config: ['--verbose', '-F', 'https://youtu.be/4IOOJ7EqTwE']
[debug] Portable config "C:\Users\quant\scoop\apps\yt-dlp\current\yt-dlp.conf": []
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version 2022.08.19 [48c88e0] (win32_exe)
[debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
[debug] Checking exe version: ffmpeg -bsfs
[debug] Checking exe version: ffprobe -bsfs
[debug] exe versions: ffmpeg 5.1-full_build-www.gyan.dev (setts), ffprobe 5.1-full_build-www.gyan.dev, phantomjs 2.1.1
[debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
[debug] Proxy map: {}
[debug] [youtube] Extracting URL: https://youtu.be/4IOOJ7EqTwE
[youtube] 4IOOJ7EqTwE: Downloading webpage
[youtube] 4IOOJ7EqTwE: Downloading android player API JSON
[youtube] 4IOOJ7EqTwE: Downloading player 113ca41c
[debug] Saving youtube-nsig.113ca41c to cache
WARNING: [youtube] 4IOOJ7EqTwE: Native nsig extraction failed: Trying with PhantomJS
         n = LuEkwAwh8GTDfi ; player = https://www.youtube.com/s/player/113ca41c/player_ias.vflset/en_US/base.js
[debug] [youtube] No terminating paren } in: {e=void 0===e?"":e;f=void 0===f?!1:f;if(a)if(c&...ack;d.level=b[c].level;g.eu(d)}Zw().set("errors",{; please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
[youtube] 4IOOJ7EqTwE: Executing signature code
[debug] [youtube] PhantomJS command line: phantomjs "--ssl-protocol=any" "C:\Users\quant\AppData\Local\Temp\tmpomkz4wya"

ERROR: Interrupted by user

This occurs even after running yt-dlp --rm-cache and yt-dlp --rm-cache-dir (as indicated by [debug] Saving youtube-nsig.113ca41c to cache). When I look at the downloaded file, 113ca41c.json, I can very clearly see an unbalanced { at the end of the JavaScript string in the file. Is the JS that yt-dlp is downloading getting truncated somehow?

quanticle on Aug 30, 2022

have you tried clearing your cache? ~/.cache/yt-dlp/

bashonly on Aug 20, 2022

Some people are reporting PhantomJS hanging even with the latest version. I have no idea why. I have implemented a a timeout for now so that atleast yt-dlp doesnt get stuck

pukkandan on Aug 22, 2022

another Video one Video i wait over 15 Min but nothing same Stop…

yt-dlp -civw --write-description --write-info-json --write-annotations --write-thumbnail --all-subs --sub-langs de,en,de-en*,live_chat --write-subs -o "%(channel)s/%(upload_date)s %(title)s/%(title)s.%(ext)s" --live-from-start --write-comments -v "https://www.youtube.com/watch?v=STZW-o4O7Fo"
[debug] Command-line config: ['-civw', '--write-description', '--write-info-json', '--write-annotations', '--write-thumbnail', '--all-subs', '--sub-langs', 'de,en,de-en*,live_chat', '--write-subs', '-o', '%(channel)s/%(upload_date)s %(title)s/%(title)s.%(ext)s', '--live-from-start', '--write-comments', '-v', 'https://www.youtube.com/watch?v=STZW-o4O7Fo']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out UTF-8, error UTF-8, screen UTF-8
[debug] yt-dlp version 2022.08.19 [48c88e0] (zip)
[debug] Python 3.7.3 (CPython 64bit) - Linux-4.19.0-21-amd64-x86_64-with-debian-10.12 (glibc 2.28)
[debug] Checking exe version: ffmpeg -bsfs
[debug] Checking exe version: ffprobe -bsfs
[debug] exe versions: ffmpeg 4.1.9-0, ffprobe 4.1.9-0, phantomjs 1000, rtmpdump 2.4
[debug] Optional libraries: certifi-2018.08.24, pyxattr-0.6.1, sqlite3-2.6.0
[debug] Proxy map: {}
[debug] [youtube] Extracting URL: https://www.youtube.com/watch?v=STZW-o4O7Fo
[youtube] STZW-o4O7Fo: Downloading webpage
[youtube] STZW-o4O7Fo: Downloading android player API JSON
[debug] Loading youtube-nsig.009f1d77 from cache
WARNING: [youtube] STZW-o4O7Fo: Native nsig extraction failed: Trying with PhantomJS
         n = 7O0RjktKLj68Vrfm3o ; player = https://www.youtube.com/s/player/009f1d77/player_ias.vflset/en_US/base.js
[debug] [youtube] No terminating paren } in: {try{0<c[52]&&(7<c[88]&&((0,c[29])(c[85],c[92])...)(c[31]),c[41],c[88],c[75],(0,c[35])())}catch(d){}; please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
[youtube] STZW-o4O7Fo: Executing signature code
[debug] [youtube] PhantomJS command line: phantomjs --ssl-protocol=any /tmp/tmpg4gztqj8
^C
ERROR: Interrupted by user

kaiand1 on Aug 20, 2022