WASM ffmpeg instead of calling subprocess

[GunGunGun]

Work perfect in web browser so we could use WASM instead of calling ffmpeg.exe from server.js, which is better, faster and more precise:

Demo: https://ffmpegwasm.netlify.app/playground Repo: https://github.com/ffmpegwasm/ffmpeg.wasm

[daniel-dewa]

better, faster and more precise

• It's slower because it can't use hardware acceleration (AVX nor Intel/AMD specific decoders/encoders).
• It's worse for power efficiency
• "more precise" does not mean anything (other than higher bitrate while encoding, that I doubt)?