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yt-dlp Now Requires External JavaScript Runtime for YouTube Support

By

bertman

6mo ago· 4 min readenCode

Summary

yt-dlp version 2025.11.12 now requires an external JavaScript runtime (Deno, Node, QuickJS, QuickJS-ng, or Bun) for full YouTube support. This follows a previous announcement about the upcoming requirement. Users are strongly encouraged to install one of the supported runtimes, with Deno being enabled by default and recommended as the strongest option.

Key quotes

· 4 pulled
With the release of yt-dlp version 2025.11.12, external JavaScript runtime support has arrived.
All users who intend to use yt-dlp with YouTube are strongly encouraged to install one of the supported JS runtimes.
The following JavaScript runtimes are currently supported (in order of recommendation, from strongest to weakest): Deno, Node, QuickJS, QuickJS-ng, Bun.
Note that only deno is enabled by default; all oth
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A feature-rich command-line audio/video downloader - Issue · yt-dlp/yt-dlp

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