API Configuration
OpenAI API Key
Used for Whisper transcription. Key never leaves your browser.
Audio Source
Drop file here or browse
No file loaded
Broadcast Settings
Broadcast Start Time
All word timestamps will display as absolute clock time from this offset.
Chunk Size: 20 MB
File is byte-sliced — no audio decoding required. Any file length supported.
Ready — load a file to begin
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Awaiting Broadcast
Load any audio file and click Transcribe. Files are byte-sliced automatically — no time limit.