Consider ffprobe as 2nd fallback for metadata processing

[icidasset]

The first fallback, mediainfo.js, has character encoding issues so we have to look at some alternatives.
ffprobe is another option that can be loaded through wasm.

https://wasmer.io/wasmer/ffmpeg
Usage example: https://wasmer.io/posts/introducing-the-wasmer-js-sdk

[icidasset]

https://github.com/taglib/taglib is another library, but I don't think there's any wasm packages for it yet.

[icidasset]

Hmm, requires setting the Cross-origin isolation headers, closing for now.