Created by

Mix Video and Audio
with Low Latency.

Media server for real-time, low-latency, programmable video
and audio mixing.

Use cases

Use Smelter for video conferencing, live-streaming,
broadcasting, and more.

Video conferencing

Stream or record video conferences seamlessly

Broadcasting

Compose professional-grade broadcasts

Live-streaming

Create awesome, interactive live streams

How does it work?

Stream inputs
or provide MP4 files

Configure mixing using
React components
or HTTP API

Write the outputs to a file
or stream them to a separate device

Live stream mixing simplified

Simple, powerful, fast

Simple, declarative API

Easily mix streams using an intuitive React component tree. Smelter is quick to pick up for anyone familiar with web development.

Real-time and low latency

Smelter targets real-time use cases with sub-frame latency. It ensures seamless performance for applications that demand immediate responsiveness.

Highly customizable

Choose from pre-built options or create custom effects with WGSL shaders and directly leverage GPU parallel processing capabilities.

Unmatched flexibility

Smelter's API is language-agnostic and effortlessly integrates with your existing setup. It functions across both browser and server environments and supports a wide range of protocols.

Batteries included

Process streams, render text, images, or websites. Combine them using high-level components and enrich with animated transitions.

Offline processing available

Convert, combine, or generate static multimedia files.

Start using Smelter

Select an option to seamlessly blend smelter into your existing solutions.

React / TypeScript SDK

React is a powerful library for building user interfaces, leverage its benefits and seamlessly compose scenes. Alternatively, you can manage your Smelter instance directly using TypeScript SDK.

Membrane plugin

Membrane is a developer-friendly multimedia framework for Elixir. With its use, you can easily integrate video and audio mixing into your multimedia pipeline using the Membrane Smelter plugin.

Standalone server

Deploy Smelter as a standalone server. Its language-agnostic API integrates easily with your solutions. With Dockerfiles and comprehensive deployment guidelines in our documentation, setting up Smelter is effortless.

Try Smelter now!

Smelter is licensed under a Custom License, designed to keep it accessible for growing teams
while supporting larger-scale use with fair licensing terms.

Offline processing

Enjoy free use of Smelter for all offline tasks, including pre-recorded video processing and batch operations.

Trial

If you're new to Smelter, you can explore it with a 90-day trial for all use-cases – no strings attached!

Online processing

While Smelter offers free offline processing, certain use cases require a commercial license:

SaaS Operations: If you operate a SaaS platform utilizing Smelter for programmatic video control.
Product Distribution: If you embed Smelter within software or hardware products intended for sale.
License Limits: If your usage exceeds the limits specified in the free license.

Mix Video and Audiowith Low Latency.