Browser conversion uses @project516/yt-dlp-wasm 0.4.0, distributed under AGPL-3.0-or-later AND Unlicense.
Source and licenses: https://github.com/Project516/yt-dlp-wasm
Local modifications (2026-10-18): browser/worker adapter adds setProxyKey() to change the relay admission key between queued operations. Prepared video information is sanitized and processed directly, so a download error is returned without an immediate webpage URL re-extraction that would bypass the shared cooldown. Audio encoding remains unchanged.
Included license files: /runtime/LICENSE and /runtime/LICENSE.upstream
It loads Pyodide and @project516/ffmpeg-wasm-core 0.17.0 in the visitor browser.
Our interface and relay source are maintained separately.