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CLUSTER BILINGUAL-EXTENSION-TRANSCRIPTS · 36 ENTRIES · EARLIEST ENTRY 2026-08-11

Bilingual video study tools

This cluster comprises browser extensions that turn online videos—chiefly YouTube and Bilibili—into study resources by adding bilingual transcripts, translations, AI summaries, timestamped notes, and vocabulary tools, often exporting to note apps like Obsidian or Notion. The dated history before the index start is too thin to read a shape from—only one entry predates the index, and one member has no source date. Traction leaders are bilibili-digest (142 stars), DramaLens (123 stars), and mazelingo (24 stars).

Entry timeline

ENTRY TIMELINE

FEB 2019: 1FEB 2026: 1MAY 2026: 2AUG 2026: 21SEP 2026: 9OCT 2026: 2
FEB 2019OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 2 hand-coded · 17 unlabelled

Operator · 16 hobby · 1 indie · 1 open source · 2 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01bilibili-digest161★23 days—Browser extension that turns Bilibili videos into learning resources with subtitle reading, bilingual comparison, AI summaries, and timestamped notes.
  2. 02bili-digest49★26 days—hobbyChrome extension that turns Bilibili videos into study material with subtitles, bilingual transcripts, AI overviews, timestamped notes, and subtitle-based Q&A.
  3. 03DramaLens122★1 mo—hobbyChrome extension that transcribes video or interview audio into timestamped text and generates human-reviewed creative structure analyses for short-drama creators.
  4. 04mazelingo27★1 moliveChrome extension that translates web content sentence by sentence, mixing two languages to aid language learning.
  5. 05voxylio18★18 daysliveindieBrowser extension that dubs subtitled videos into French, Spanish, Italian, German, or Portuguese in real time while the viewer watches.
  6. 06Vow6★26 days—hobbyBrowser extension that detects video, audio, and subtitle stream links on web pages and organizes them for one-click copying.
  7. 07Winnow2★22 dayslivehand-codedhobbyBrowser extension that reads articles and YouTube videos and recommends whether to read, skim, save, or skip based on user goals.
  8. 08ironwords16★1 mo—hobbyBrowser extension that captures unfamiliar words encountered while watching videos and compiles them into a personal vocabulary dictionary.
  9. 09firefox-extension-video-download-helper0★1 molivehand-codedopen sourceBrowser extension that downloads and converts videos from YouTube-like websites.
  10. 10youtube-digest-learning11★1 mo—hobbyBrowser extension that turns YouTube videos into vocabulary lessons using bilingual transcripts and printable study exports.
  11. 11video-digest4★1 mo—hobbyBrowser extension that enables focused learning from YouTube and Bilibili videos through Q&A, notes, and reusable learning packs.
  12. 12LeoTube1★1 mo—hobbyChrome extension that turns YouTube videos into transcripts, bilingual translations, AI summaries, and timestamped notes, saving them to Obsidian.
  13. 13Flow5★1 mo—hobbyBrowser extension that auto-skips videos and documents in Google Skills courses to accelerate learning.
  14. 14whatchasay0★7 days—hobbyBrowser extension that displays live local subtitles and translations for audio playing in any tab, so people can follow videos in unfamiliar languages.
  15. 15youtube-bilingual-caption-overlay0★20 days—hobbyBrowser extension that shows YouTube captions in an always-on-top window and adds on-device Japanese translations beneath each line.
  16. 16BiliBoo-SUBTITLEDOWNLOAD0★20 days—hobbyChrome extension that downloads subtitles from Bilibili and YouTube videos as SRT files.
  17. 17dio-helper-extension0★7 days—hobbyBrowser extension for an online learning platform that disables auto-generated subtitles, adds a theater mode, and opens the current lesson on YouTube where the viewer left off.
  18. 18Popular-Recently-for-YouTube0★18 daysliveai-builthobbyBrowser extension that re-sorts a YouTube channel's videos and Shorts by recent view count within a chosen time window and exports data for content strategy research.
  19. 19T-Manager0★21 dayslivehobbyBrowser extension for YouTube creators that batch renames videos with English or Bangla numbering, creates thumbnails, uploads videos, and shows analytics across multiple channels.
  20. 20yt-dual-subs0★21 days—hobbyBrowser extension that shows bilingual English-Chinese subtitles on YouTube translated locally by an LLM, with hover-pause, word lookup, and step-by-step sentence review for language learning.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.