Show HN: AI Podcast Transcription with Auto-Generated Chapters and Show Notes (harku.io)

I built an AI tool that converts podcasts to text with automatic chapter detection, multi-level summaries, and highlight extraction. Unlike basic transcription services, it generates production-ready Show Notes in one click.

Technical highlights: • 99%+ accuracy using Whisper with optimized chunking for long audio • Speaker diarization without training data • AI chapter detection using topic boundary analysis • Exports to Markdown/TXT/JSON with structured metadata

Free tier: 5-minute preview Tech stack: Next.js, Whisper, R2 storage

Try it: https://harku.io/tools/podcast-transcription

Built this after spending 30-60 minutes manually creating Show Notes for each episode. Would love feedback from fellow podcasters and developers.