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yt-dlp YouTube Download Fix
============================
Date: 2026-02-02
PROBLEM
-------
YouTube video downloads are failing or showing warnings like:
WARNING: [youtube] [jsc] Remote components challenge solver script (deno)
and NPM package (deno) were skipped.
WARNING: [youtube] Signature solving failed: Some formats may be missing.
WARNING: [youtube] n challenge solving failed: Some formats may be missing.
CAUSE
-----
YouTube now uses JavaScript-based challenges to protect video stream URLs.
yt-dlp version 2026.01.31 can solve these challenges using deno (which is
installed), but by default it won't download the required solver scripts
for security reasons.
FIX
---
Add this line to ~/.config/yt-dlp/config:
--remote-components ejs:github
This tells yt-dlp to download the official challenge solver scripts from
the yt-dlp/ejs GitHub repository.
The config file is symlinked to:
~/code/archsetup/dotfiles/common/.config/yt-dlp/config
VERIFICATION
------------
After adding the flag, test with:
yt-dlp --simulate "https://www.youtube.com/watch?v=dQw4w9WgXcQ"
You should see:
[youtube] [jsc:deno] Downloading challenge solver lib script from https://...
instead of the warnings.
REFERENCE
---------
https://github.com/yt-dlp/yt-dlp/wiki/EJS
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