This is super cool. Very impressive project. I had not realized ffmpeg could run client side. This opens up some really interesting possibilities for media editing and sharing (imagine if video sharing platforms enabled people to edit/annotate videos in the browser before publishing)
For sure! Although this project is using a worker for ffmpeg, currently it only runs one which means it's like you're running encoding on a single core machine, but with even more JavaScript overhead.
You could spin up simultaneous workers but you'd have to figure out how to break up what you're doing into separable parts. The file system is not shared between workers so you'd need to either send all the data back over or do something clever. This would be very doable, but I don't want to overload the browser especially on mobile.
Looking forward to when web threads are safe again... SharedArrayBuffer ;)
