Show HN：LeetDreamer - AI 生成的 LeetCode 解題影片

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joshribakoff/leetdreamer

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🎬 LeetDreamer

"What if algorithm explanations didn't put you to sleep?"

A pipeline that generates narrated algorithm visualization videos. Because staring at code for 3 hours is less effective than watching a robot explain Two Pointers in 37 seconds.

🎥 See it in action

👆 Click to watch the generated video on YouTube

The Problem

The Solution

Write a scene spec → Get a narrated video. That's it.

Output: A video where a robot voice explains the algorithm while colorful boxes do the thinking for you.

How It Works

The secret sauce: audio-first sync. Generate the voice track first, measure how long each phrase takes, then make the animation match. No more desynced disasters.

Installation

Creating a Scene

Scenes live in scenes/<name>/scene.json:

The narration becomes audio. The state drives the visualization. Simple.

Architecture

See ARCHITECTURE.md for the full nerd version. Key points:

Want to swap macOS say for OpenAI TTS? Change one adapter. Want Manim instead of HTML? Change one adapter. The dream is modularity.

Requirements

Status

🚧 Early days - The bones work, the flesh is still forming.

Currently renders: Two Pointers (Two Sum II)

Coming eventually: Sliding Window, Binary Search, DP visualizations, maybe your algorithm if you ask nicely.

License

MIT - Do whatever you want, just don't blame me when the robot voice mispronounces "deque".

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