Audio Chunking for Long-Form Transcription: Splitting and Stitching with ffmpeg + TypeScript

APIs that do speech-to-text — Groq Whisper, OpenAI Whisper, and friends — all have one thing in common: a file size limit. Groq's hard cap is 25MB. A typical one-hour interview at decent quality can easily be 80–150MB. If you just try to send that, you'll get a 413 or a rate-limit error before the t