Florent Roques florentroques

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

A lot of people mentioned other immutable JS libraries after reading my post. I thought it would be good to make a list of available ones.

There are two types of immutable libraries: simple helpers for copying JavaScript objects, and actual persistent data structure implementations. My post generally analyzed the tradeoffs between both kinds of libraries and everything applies to the below libraries in either category.

Libraries are sorted by github popularity.

Persistent Data Structures w/structural sharing

JavaScript

JavaScript Basics

Javascript fundamentals 7- hours
Udacity Javascript Basics
NodeSchool.io - Javascripting
Eloquent Javascript(http://eloquentjavascript.net/)
Eloquent Javascript - Annotated version(http://watchandcode.com/courses/eloquent-javascript-the-annotated-version)
Javascript: The good parts(http://www.maritimejournal.com/__data/assets/pdf_file/0020/1033940/Javascript-The-Good-Parts.pdf)
LearnCode.Academy - VIDEO (https://www.youtube.com/channel/UCVTlvUkGslCV_h-nSAId8Sw)
FreeCodeCamp resources list (http://blog.freecodecamp.com/2015/06/25-free-resources-for-new-javascript-developers.html)

	"""
	Convert YouTube subtitles(vtt) to human readable text.

	Download only subtitles from YouTube with youtube-dl:
	youtube-dl --skip-download --convert-subs vtt <video_url>

	Note that default subtitle format provided by YouTube is ass, which is hard
	to process with simple regex. Luckily youtube-dl can convert ass to vtt, which
	is easier to process.

	<!DOCTYPE html>
	<html>
	<head>
	<title>JS in-browser barcode reader</title>
	<style type="text/css">
	body > div {
	position: relative;
	width: 320px; height: 240px;
	}
	video { position: absolute; top: 0; left: 0; width: 320px; height: 240px; }