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Mix Video
with Low Latency.

Toolkit for real-time, low-latency,
programmable video compositing.

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Use cases

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

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Live-streaming

Create awesome, interactive live streams

Live-streaming

Broadcasting

Compose professional-grade broadcasts

Broadcasting

Video conferencing

Stream or record video conferences seamlessly

Video conferencing

How does Smelter work?

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Live stream mixing simplified

Simple, powerful, fast

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Simple, declarative API

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

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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.

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Highly customizable

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

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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.

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Batteries included

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

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Offline processing available

Convert, combine, or generate static multimedia files.

Start using Smelter

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

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React / TypeScript SDK

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Membrane plugin

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Standalone server

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How much does it cost?

Free

For hobbyists andsmall-to-medium projects

Offline processing: Unlimited
Live processing:
  • Up to 50 employees
  • Up to 10k viewers
  • Up to 50 machines

Enterprise

For enterprise-grade applications

Offline processing: Unlimited
Live processing: Unlimited
Priority support: Custom integrations, new features, long-term support

Free trial for 90 days (no credit card required, no strings attached)

Battle-tested solution
for the multimedia industry

“We currently use this in one of our current production apps and the capabilities of it are fantastic.
Quite a pragmatic toolkit to use and would definitely recommend it to anyone interested in doing real-time A/V.
The best toolkit to use in Elixir for sure.”

Deric avatar
Deric Walintukan Senior Engineering Manager at Firework

Ask us anything
about Smelter