For main library see Source BlazorFFmpegWasm.
This is FFmpeg wasm deployed on Netlify(Free Static web site hosting platform), other files are normal Blazorwasm release output files. Only thing to notice here is netlify.toml file

[[headers]]
  for = "/*"
  [headers.values]
  Cross-Origin-Opener-Policy = "same-origin"
  Cross-Origin-Embedder-Policy = "require-corp"

On whatever hosting platform you are deploying the site make sure these 2 custom headers are present.