Realtime transcription: choices and stories for PyCon IT

Why all this interest in realtime transcription It all started with the collaboration with PyCon IT. At PyCon IT 2025 they set up live transcription with local Whisper on a Graphics Processing Unit (GPU), based on the repo realtime-transcription-fastrtc . With the YouTube videos used as tests, all good. With the real audio of a conference room, Whisper started hallucinating: a generative model, if you give it a signal it doesn't recognize, doesn't leave a blank, it writes something anyway. For P