Deterministic
The browser preview and the server export run the same rendering code, so they draw the same frames.
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One project. Every target. The same frames.
alpha2 renders a timeline project (sources, tracks, clips, effects, transitions, text and layout) on the GPU, for preview and for export. Browser, Node.js, Python, Rust and the CLI all run the same rendering code.
Pick your way in
Section titled “Pick your way in”Browser (alpha2)WebAssembly engine: preview on a canvas, export with WebCodecs.
ReactA canvas component over the browser player.
EditorDocuments, commands, undo, and a preview and export bridge.
Node.js & ElectronExport MP4, MOV, MKV or WebM with the native host.
CLI & other languagesalpha2-host export, or its stdio protocol from any language.
PythonBuild projects and export from Python.
RustThe engine crate: lend it frames, take back rendered frames.
Why alpha2
Section titled “Why alpha2”A JSON contract
A project is a versioned, schema-checked document. You can generate it, diff it, store it and have an LLM write it.
GPU everywhere
WebGPU or WebGL2 in browsers, and Vulkan, Metal or Direct3D 12 natively, with a CPU renderer as the fallback.
Batteries included
62 effects, 122 transitions, text, shapes, CSS flexbox and grid layout, captions and an audio mixer.