B站网课笔记 Bilibili course notes (大纲+分P)

B站网课转笔记 / Bilibili lecture & course notes. 用户要把一节 B 站网课、讲座、公开课（BV 号、b23.tv 短链或分享文字）整理成学习笔记，或要把一整套分P 课程逐 P 做成笔记时使用。输出 Markdown：8 分钟以上的视频带「带时间的章节大纲」，要点附原话和时间，逐字稿每行带 [mm:ss]；分P 课程每 P 一个文件，开始前先报每 P 时长和要花的积分。不登录 B 站、不要 Cookie、不下载视频。没有 Key 可免费看一条摘要；完整笔记需要 LinkDigest API Key（注册送 10 积分）。

B站网课 → 学习笔记（大纲 · 要点 · 逐字稿 · 分P）

A lecture on Bilibili is an hour of speech and slides. Agents cannot fetch it (Bilibili answers server requests with HTTP 412), and a raw transcript is not notes. This skill turns one lecture — or a whole multi-part course — into Markdown notes a student can study from.

Decide first

The user wants	Run
Notes for one lecture	python3 {baseDir}/scripts/bili2notes.py "<link>" -o note.md
Only what was said, cheapest	add --depth script
Slide / board text too	add --depth full --on-screen (dearer: frames are read)
Parts 1–10 of a 分P course	python3 {baseDir}/scripts/bili2notes.py "<link>" --parts 1-10 --out-dir notes/
Every part	--parts all (the script lists each part's length and the credit total and asks before starting; --yes skips the question)
Re-render notes from a saved API reply, offline	--from-json reply.json

The link can be a full bilibili.com/video/BV… address, a ?p=N part link, a b23.tv short link, a bare BV id, or the whole share text copied from the app.

What a note contains

1. Header: title, uploader, date, length, and for a 分P video "第 N P / 共 M P".
2. 大纲 (videos of 8 minutes and longer read since 2026-11-10): sections with start–end times, a title and one to three lines each. Section times are taken from the transcript's own timestamps and checked in code, so every time can be found in the video.
3. 要点: the key points, each followed by the quoted line and time it came from when one was found.
4. 逐字稿: every line with [mm:ss].

Real output: examples/bilibili/sample-note.md — 跟李沐学AI《Transformer论文逐段精读》(87 min): 17 outline sections, 15 key points, 527 transcript lines.

Tell the user

• Speech recognition misspells names and terms (in that lecture "attention" once came out as "tension"); check them against the video.
• A long lecture's last outline section can be coarse; split it by the transcript if it covers much more than its title.
• Exit codes: 3 key refused · 4 not enough credits (the message names what the balance can read instead) · 5 the video cannot be read (deleted, private, members-only) · 7 timed out (rerun; the job is not charged twice).

Cost and limits

Billed per started minute of video and cheaper the less is read: a 10-minute video is 5 credits speech-only (--depth script), an 87-minute lecture is 45 credits transcript-first (the default). Transcript-first reads up to 60 minutes per video on the free plan and 2 hours on paid plans. A video anyone has already read at that depth is free. Links that cannot be read are not charged.

Privacy

Only the link is sent to linkdigest.dev. No Bilibili account, cookie or login is used; the video is read through the player Bilibili publishes for other sites and deleted after reading. https://linkdigest.dev/privacy · [e-mail]