Hacking OpenAI Transcription: Speed Up Your Audio, Slash Your Costs
2025-06-25
Want cheaper, faster OpenAI transcriptions? Speed up your audio! This surprisingly effective hack involves using ffmpeg to double or triple the speed of your audio before transcription. The author shares a script combining yt-dlp, ffmpeg, and an LLM, showcasing how speeding up a 40-minute talk significantly reduced both processing time and cost, with minimal impact on transcription accuracy. While exploring alternatives to YouTube's auto-captioning, this unexpected discovery revealed cost savings of up to 67%, making it a worthwhile optimization for anyone working with long-form audio transcriptions.
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