Instead of creating another FFmpeg wrapper, I built this using WebCodecs, which is up to 67x faster than FFmpeg WASM.
Run your videos through this before posting on Nostr. It cuts size by 50–90% with minimal quality loss, saves CDN bandwidth, and makes posts load instantly.
Nostr Compress - High Performance Video Optimization
Optimize your videos for Nostr—reduce size by 50-90% without losing substantial quality. 100% client-side.