https://www.steeman.be/categories/self-hosted/Recent content in Self-Hosted on steeman.beHugo -- gohugo.ioen-usSat, 18 Apr 2026 14:00:00 +0200https://www.steeman.be/posts/local-whisper-transcription-with-speaker-diarization/Sat, 18 Apr 2026 14:00:00 +0200https://www.steeman.be/posts/local-whisper-transcription-with-speaker-diarization/<p>I wanted a transcription tool that runs entirely on my own hardware — no audio leaves the machine, no cloud APIs, no subscriptions. Something that handles any language (including tricky ones like Flemish dialect), produces speaker-labeled output, and can be tuned with domain-specific vocabulary for whatever context I&rsquo;m transcribing.</p> <p>What I ended up with is a Docker container powered by an NVIDIA RTX 3090 that transcribes audio with Whisper, aligns every word to a precise timestamp, and identifies who said what — all in about two minutes for a 42-minute recording.</p>