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Video2Book by LazyingArt LLC

Video2Book by LazyingArt LLC. Websites: lazying.art and learn.lazying.art.

Video2Book is a practical pipeline for turning long-form video collections into durable study material: downloaded media, timestamped transcripts, and transcript-derived lecture notes with compiled PDFs.

📚 Flagship Books

These previews use the extracted first page of each published PDF from LazyEarn and LazyLearn.

Wealth from First Principles money, ownership, claims, and compounding	How You Got Rich? a nonlinear wealth book built from interview evidence	How You Got Successful? Jim Rohn success lectures reordered into a smoother book arc	How You Got Happiness? Krishnamurti talks shaped into a book on attention, fear, meditation, and freedom

LazyLearn also publishes a multilingual writing book plus a finished justice course book:

How to Speak and Write reordered English edition	如何說話與寫作 繁體中文版	話し方と書き方 日本語版	Justice with Michael Sandel Michael Sandel political philosophy course book

leonardsusskind also publishes core Theoretical Minimum physics books:

Quantum Mechanics Theoretical Minimum core book	General Relativity Theoretical Minimum core book	Statistical Mechanics Theoretical Minimum core book	Cosmology Theoretical Minimum core book

✨ What It Covers

• Download a playlist into a stable external media archive.
• Transcribe videos into .srt subtitles and timestamped Markdown.
• Convert completed transcript sets into structured TeX notes and merged course PDFs.
• Convert ordered Markdown material folders into pocket-size TeX/PDF books.
• Run long jobs in tmux with queue scripts and monitor/guard scripts.
• Export compact pocket-format companion PDFs from finished course LaTeX.
• Reuse the same wrapped-header and figure-refresh workflow for both normal full-size PDFs and pocket PDFs across host repos.

🧪 Working Host Repos

Video2Book is already being used in multiple host repos with different archive shapes.

Host repo	Focus	Wrapper example	Current tracked outputs
LazyEarn	Yale Financial Markets course with Robert J. Shiller	examples/lazyearn/yale-financial-markets/	course PDF, lecture PDFs, markdown transcripts, subtitles
LazyLearn	Writing-course adaptation for How You Speak and Write	examples/lazylearn/how-you-speak-and-write/, examples/lazylearn/justice-with-michael-sandel/	How You Speak and Write course PDF, Justice with Michael Sandel course PDF, local speaker course PDFs, local justice PDF, lecture PDFs, markdown transcripts, subtitles
leonardsusskind	Full Leonard Susskind lecture archive, transcript pipeline, and published note books	examples/leonardsusskind/susskind-physics-archive/	published books folder, advanced quantum PDF, topics in string theory PDF, particle physics 3 PDF, markdown transcripts, subtitles

📘 Books And PDFs

The third stage is already producing real book-like outputs in host repos:

• merged course books such as course.pdf or a host-published canonical name
• per-lecture PDFs under generated_course_notes/.../chapters/
• transcript trees in markdown/ and subtitle trees in subtitles/

Other published books and course outputs:

Host repo	Title	Main PDF	Notes
LazyEarn	Yale Financial Markets	PDF	Robert J. Shiller lecture book with full-size and pocket variants
LazyEarn	Hard Knocks Interviews	PDF	direct lecture-by-lecture compilation
LazyEarn	High-Growth Dossier	PDF	legacy research book with pocket exports
LazyEarn	Quod Tango Muto	PDF	Latin-motto research book with pocket exports
LazyLearn	How You Speak and Write	PDF	writing-course adaptation
LazyLearn	Justice with Michael Sandel	PDF	political philosophy course book
leonardsusskind	Classical Mechanics (Theoretical Minimum)	PDF	consolidated book in all_notes/
leonardsusskind	Quantum Mechanics (Theoretical Minimum)	PDF	core TTM book in all_notes/
leonardsusskind	Special Relativity (Theoretical Minimum)	PDF	core TTM book in all_notes/
leonardsusskind	General Relativity (Theoretical Minimum)	PDF	core TTM book in all_notes/
leonardsusskind	Statistical Mechanics (Theoretical Minimum)	PDF	core TTM book in all_notes/
leonardsusskind	Cosmology (Theoretical Minimum)	PDF	core TTM book in all_notes/
leonardsusskind	Advanced Quantum Mechanics	PDF	supplemental physics title
leonardsusskind	Topics in String Theory	PDF	supplemental cosmology / string title

Other Susskind consolidated titles are available in all_notes.

Local Sibling Repo Pointers

If you are running these repos from a shared parent directory (for example /home/lachlan/ProjectsLFS), the same books are also addressable via local paths:

• ../LazyLearn/justice-with-michael-sandel/justice-with-michael-sandel.pdf
• ../LazyLearn/how-to-speak-and-write/how-to-speak-and-write.pdf
• ../LazyEarn/generated_course_notes/lazyearn/yale-financial-markets/course.pdf
• ../leonardsusskind/<sibling-folder>/... (course and published-book PDFs in that repo)

🧩 Pipeline

Stage	Module	Purpose
1	playlist2videos/	Download or refresh a playlist with yt-dlp, keep logs, and skip already archived items.
2	videos2subtitles/	Transcribe the archived media into subtitles/ and markdown/.
3	subtitles2notes/	Turn completed transcripts into chapter TeX, lecture PDFs, and merged course PDFs.
4	scripts/process_markdown_material_book.py	Turn ordered source Markdown folders into generated pocket-size TeX/PDF books while passing related images to Codex.
5	scripts/start_markdown_material_book_tmux.sh	Run the Markdown-material book writer in tmux, with resume-safe one-source-at-a-time processing.
6	scripts/export_course_pocket_pdfs.sh	Rebuild finished course.tex outputs into pocket/A5 variants for publishing packages and emit mapped overfull reports.
7	scripts/export_tex_book_pocket_pdf.sh	Rebuild one standalone TeX book/article into a pocket-size companion PDF and sync it into the host repo docs tree.
8	subtitles2notes/templates/lecture_notes_common_preamble.tex	Shared normal-size course-PDF header/layout source used by generated books.
9	scripts/fix_course_pocket_overfulls.sh	Iterate on one course variant: export, report, Codex patch, and re-export until actionable overfulls drop.
10	scripts/fix_latex_project_overfulls.sh	Generic LaTeX overflow fixer for any repo/project that can build with pdflatex or a custom compile command.
11	scripts/recheck_course_figures.py	Re-audit screenshot-like lecture figures against transcript context and replacement video frames.
12	scripts/export_course_epubs.sh	Rebuild finished course.tex outputs directly into EPUB3.

🚀 Quick Start

Clone it directly:

git clone git@github.com:lachlanchen/Video2Book.git
cd Video2Book

Or add it to another repo as a submodule:

git submodule add git@github.com:lachlanchen/Video2Book.git Video2Book
git submodule update --init --recursive

🏗️ Host Repo Layout

Video2Book expects to run from a host repo that stores the working outputs:

• subtitles/
• markdown/
• generated_course_notes/
• .lecture-notes-work/

The video files themselves are usually kept outside the host repo in a media workspace such as:

• /home/lachlan/ProjectsLFS/YoutubeDownloader

🛠️ Typical Usage

From the host repo root:

./Video2Book/scripts/download_susskind_playlist.sh
./Video2Book/scripts/start_transcription_tmux.sh
./Video2Book/scripts/start_transcription_monitor_tmux.sh
./Video2Book/scripts/start_course_notes_tmux.sh
./Video2Book/scripts/start_course_notes_monitor_tmux.sh

Dry-run the downloader:

./Video2Book/scripts/download_susskind_playlist.sh --dry-run

Start a note-writing queue for one course:

./Video2Book/scripts/start_course_notes_tmux.sh --course supplementary/advanced_quantum_mechanics/2013_fall

Export compact PDFs for all completed courses (for example in leonardsusskind):

./Video2Book/scripts/export_course_pocket_pdfs.sh --host-root /home/lachlan/ProjectsLFS/leonardsusskind

Export one standalone book in investment_pdfs/ into pocket-size variants:

./Video2Book/scripts/export_tex_book_pocket_pdf.sh \
  --repo-root /home/lachlan/ProjectsLFS/LazyEarn \
  --project-root /home/lachlan/ProjectsLFS/LazyEarn/investment_pdfs/wealth-from-first-principles \
  --main-tex wealth-from-first-principles.tex \
  --font-mode onepointtwo \
  --suffix pocket_1_2x

Run the Codex-driven overflow fixer for one narrow-layout course variant:

./Video2Book/scripts/start_pocket_overflow_fix_tmux.sh \
  --course core/statistical_mechanics/2013_spring_theoretical_minimum \
  --font-mode onepointtwo \
  --model gpt-5.4 \
  --reasoning medium

Run the queue in tmux across all completed Susskind courses, one course at a time:

./Video2Book/scripts/start_pocket_overflow_fix_tmux.sh \
  --font-mode onepointtwo \
  --model gpt-5.4 \
  --reasoning medium

Run the generic LaTeX fixer on any project:

./Video2Book/scripts/fix_latex_project_overfulls.sh \
  --repo-root /path/to/repo \
  --project-root /path/to/repo/book \
  --main-tex main.tex \
  --model gpt-5.4 \
  --reasoning medium

Export EPUB3 directly from TeX for all completed courses:

./Video2Book/scripts/export_course_epubs.sh --host-root /home/lachlan/ProjectsLFS/leonardsusskind

Host-specific wrappers can live under examples/. Current bundled patterns:

• examples/lazyearn/yale-financial-markets/
• examples/lazylearn/how-you-speak-and-write/
• examples/leonardsusskind/susskind-physics-archive/

🎬 Current Default Example

The bundled downloader defaults to the Leonard Susskind physics playlist:

• https://www.youtube.com/playlist?list=PLERGeJGfknBTR_nXt5QL88xJF5LhDZBnG

That default is just a working example. The code is structured so other host repos can adapt the same pipeline to different lecture archives.

📦 Module Map

• playlist2videos
• videos2subtitles
• subtitles2notes
• scripts
• Pocket export handoff
• A4 and pocket layout handoff
• README book preview handoff
• LaTeX overflow fixer handoff
• EPUB export handoff

📚 Host Adaptation Notes

• references/lazylearn-course-adaptation.md
• references/lazyearn-yale-financial-markets-adaptation.md
• references/nanobanana-2-book-cover-handoff.md
• references/readme-book-preview-handoff.md
• references/a4-and-pocket-pdf-layout-handoff.md
• references/latex-overflow-fixer-handoff.md
• references/tex-book-translation-workflow.md
• references/tex-to-epub-handoff.md

🎨 Book Cover Utility

Video2Book also includes a local Nano Banana 2 helper for editorial book-cover generation:

• script: scripts/book_cover_nanobanana.py
• guide: references/nanobanana-2-book-cover-handoff.md
• env template: .env.example
• current-book example prompt: examples/lazylearn/how-you-speak-and-write/book_cover_prompt.txt

It reuses the GRS AI submit-and-poll mechanics from the sibling Nano Banana work, but swaps the segmentation prompts for a book-cover prompt and saves a clean output trace per run.

🌐 Book Translation Utility

Video2Book can also translate a finished lecture-note book into sibling language folders such as zh/ and jp/, while keeping the TeX structure, equations, and images intact.

• manager: scripts/translate_tex_book.py
• loop runner: scripts/process_book_translation_one_by_one.sh
• tmux starter: scripts/start_book_translation_tmux.sh
• workflow note: references/tex-book-translation-workflow.md

The translation loop:

• initializes a XeLaTeX-ready translated edition
• translates the main book file first, then each chapter
• supports both split-chapter books and single-file main.tex books with inline \chapter{...} blocks
• names translated entry files with a language suffix such as book_zh.tex or book_jp.tex
• recompiles after every unit
• can commit and push the translated folder after each completed unit

⚙️ Requirements

• tmux
• ffmpeg
• pdflatex
• pdfunite
• pdftotext
• yt-dlp
• pandoc (for scripts/export_course_epubs.sh)
• codex CLI for the notes pipeline
• a working whisper conda env for transcription
• whisper_with_lang_detect if you want the primary subtitle path instead of fallback-only Whisper
• rsync (for optional local publishing sync of pocket PDFs)

🤝 Good Fit

Video2Book is a good fit when you want:

• a repo-local pipeline instead of a monolithic app
• transcript-first lecture note generation
• tmux-based long-running automation
• reproducible archive structure for study material

🙏 Support

Donate	PayPal	Stripe

License

This repository is licensed under the GNU General Public License v3.0.