I haven't used it, but I believe JIMP might work for you if you're looking for a JS solution to image manipulation

https://github.com/oliver-moran/jimp

For images, you'd want to use a more performant 'sharp'.

https://github.com/lovell/sharp

Benchmark

https://sharp.pixelplumbing.com/en/stable/performance/

For node, there is https://github.com/fluent-ffmpeg/node-fluent-ffmpeg.

I've been working through this over the last year plus in node, and ended up deciding with my team earlier this year to build a library that makes this easier to understand and work with.

It's early yet, and explicit I/O mapping is not quite there at the moment, but you're welcome to check it out. Feedback is welcome.

https://tedconf.github.io/fessonia