This might also be interesting to the readers. In Wasmer we recently ported ffmpeg to Wasm/WASIX. It runs fully in both client (browser) and also fully on the server: https://wasmer.io/wasmer/ffmpeg (is multithreaded, all codecs supported)

Here's a video showcasing it! https://twitter.com/wasmerio/status/1687238131395768320

I believe we can bring ffmpeg to any programming language quite easily... stay tuned!