tellur-plugin 0.2.0

Tellur is a component-oriented video editing library. It aims to be a general-purpose library capable of handling various video styles.

Rich expressions like motion graphics
Variety-show style telops/captions
Calm tones suitable for explainer videos, etc.

Each element in a video is represented by a combination of components as shown below.

#[component(vector)]
fn Dot(center: Vec2, radius: f32, color: Color) -> impl VectorComponent {
    Circle::builder()
        .radius(radius)
        .fill(Fill {
            paint: Paint::Solid(color),
        })
        .anchored(Anchor::CENTER)
        .snap_to(center)
}

Components are functional and pure, enabling caching at the subtree level.

Additionally, GPU rendering is implemented for most built-in components, making it extremely fast.

Comparison with Similar Tools

Remotion (React)

Pros: Since it has its own rasterizer, it is easy to create rich expressions that go beyond the limitations of HTML/CSS.
Cons: The writing style cannot compete with the conciseness of JSX.

Manim (Python)

Pros: Rendering is fast, and it provides a full suite of tools for video production regardless of genre, including timelines, layouts, and live previews.
Cons: Complex mathematical expressions are still immature.

Getting Started

You can create a timeline project from a template using tellur create. This generates a Cargo.toml (a cdylib crate) and sample scenes. If executed within a Cargo workspace, it also automatically handles member registration and tellur dependencies.

$ tellur create my-video

You can specify the display name of the timeline with --title (defaults to the directory name if omitted).

Live Preview

tellur live provides a browser preview with hot-rebuilding of the project.

$ tellur live --project path/to/your-video --gpu

Crate Structure

crate	Role
`tellur`	Facade. Re-exports everything below. `tellur` CLI (`cli` feature)
`tellur-core`	Component model, layout, easing, events, text, LaTeX math
`tellur-renderer`	GPU/CPU rasterization and ffmpeg encoding
`tellur-macros`	`#[component]` and `#[derive(Keyable)]`
`tellur-live`	Live preview server
`tellur-plugin`	Dynamic library ABI used by live preview

Requirements

ffmpeg: Required for encoding.
fontconfig (Linux only): Required for font detection.

Documentation

Layout system tutorial — the canvas and flow worlds: Layer, Frame, Flex, anchors, and clipping (日本語)
Time system tutorial — Phase, Window, events, and the placement-clock world (日本語)

For AI coding agents, an authoring skill captures the idiomatic "Tellur style" on top of the tutorials.

A getting-started tutorial is under preparation.

License

MIT