Reverse Engineering Naver Video: Building a High-Performance Downloader with HLS & WebAssembly

Short summary

Tutorial on building a Naver video downloader using HLS and WebAssembly. The architecture combines Node.js proxies to emulate the official player, API calls to fetch M3U8 playlists at highest bitrate, and client-side WebAssembly for assembling segments instead of expensive server-side merging. The approach handles CORS restrictions and demonstrates modern streaming architecture patterns.

• •Naver uses HLS with adaptive bitrate streaming, requiring proxy-based API emulation and header rotation to access content
• •Client-side WebAssembly assembles video segments, eliminating costly server-side merging of 500+ .ts files
• •Architecture combines Node.js reverse-proxies, M3U8 playlist parsing, and browser-based processing

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