mux.js
A collection of lightweight utilities for inspecting and manipulating video container formats.
@expo/mux
Creates a promise that waits for the promises in nested data structures and resolves to data structures of the same form. It recursively traverses the input data structure and multiplexes its promises.
json-to-ffmpeg
Experimental JSON to FFmpeg command line tool for video editing. Because of JSON it's much easier to create and edit video timeline and it's much easier to integrate it with other tools.