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Downloads YouTube video transcripts/subtitles and cover images by URL or video ID. Supports multiple languages, translation, chapters, and speaker identification. Caches raw data for fast re-formatting.
Passed 3 of 9 test cases with the skill, and 2 of 9 without it.
and 2 more in the full report
5 fixed3 passed either way11 still failing3 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
How should the transcript script in `scripts/main.ts` be run when bun is not installed but npx is available?
| Checked | Without skill | With skill |
|---|---|---|
| Uses npx -y bun to execute scripts/main.ts. | Missed | Passed |
The instructions your model reads when the skill loads.
Downloads transcripts (subtitles/captions) from YouTube videos. Works with both manually created and auto-generated transcripts. No API key or browser required — uses YouTube's InnerTube API directly and automatically falls back to yt-dlp when YouTube blocks the direct API path.
Fetches video metadata and cover image on first run, caches raw data for fast re-formatting.
Scripts in scripts/ subdirectory. {baseDir} = this SKILL.md's directory path. Resolve ${BUN_X} runtime: if bun installed → bun; if npx available → npx -y bun; else suggest installing bun. Replace {baseDir} and ${BUN_X} with actual values.
| Script | Purpose |
|---|---|
scripts/main.ts | Transcript download CLI |
# Default: markdown with timestamps (English)
${BUN_X} {baseDir}/scripts/main.ts <youtube-url-or-id>
# Specify languages (priority order)
${BUN_X} {baseDir}/scripts/main.ts <url> --languages zh,en,ja
# Without timestamps
${BUN_X} {baseDir}/scripts/main.ts <url> --no-timestamps
# With chapter segmentation
${BUN_X} {baseDir}/scripts/main.ts <url> --chapters
# With speaker identification (requires AI post-processing)
${BUN_X} {baseDir}/scripts/main.ts <url> --speakers
# SRT subtitle file
${BUN_X} {baseDir}/scripts/main.ts <url> --format srt
# Translate transcript
${BUN_X} {baseDir}/scripts/main.ts <url> --translate zh-Hans
# List available transcripts
${BUN_X} {baseDir}/scripts/main.ts <url> --list
test cases passed, vs 2 / 9 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.