Prerequisite

Webserver

Your webserver must serve the files with cross origin headers.

"Cross-Origin-Embedder-Policy": "require-corp"
"Cross-Origin-Opener-Policy": "same-origin"

Also make sure that the file shout.wasm.worker.mjs is served with Content-Type: text/javascript (not application/wasm)

Model File

You need a ggml model file to run Transcribe.js. You can download them on hugging face https://huggingface.co/ggerganov/whisper.cpp/tree/main.

You should start with the (quantized) tiny or base models. Larger models propably won't work due to memory restrictions of wasm or will be just too slow, but you can try it, though.