jMuxer lets you create MP4 files in JavaScript, working seamlessly in both web browsers and Node.js environments. It processes raw H.264 video and AAC audio (ADTS) to enable media playback via the Media Source Extension in browsers or export MP4 files server-side.
A JavaScript MP4 muxer for browser and Node.js.
Developers needing to mux media streams in JavaScript for web playback or server-side processing.