heristop/leclap — Deterministic video composition from one JSON template — renders on Node, in the browser via WebAsse…

Description and use

Leclap enables deterministic video composition from JSON templates, allowing for serverless, on-device rendering across Node, WebAssembly, and React Native to streamline media editing workflows. Its practical adoption is facilitated by straightforward integration via API/SDK/CLI and MCP agent compatibility, making it ideal for automating repeatable pipelines like captioning and transcoding. With strong ecosystem signals and recent activity, the project demonstrates high production readiness, though a final review of its license and security posture is recommended before full deployment.

Problem

heristop/leclap helps turn media editing, captions, rendering, and transcoding into repeatable workflows.

Outcome

High for an OSS candidate: recent activity, adoption, and ecosystem signals are strong enough for a serious pilot.

Workflow

• automate editing and rendering
• generate subtitles or dubbing
• build repeatable media-processing pipelines

Evidence

Deterministic video composition from one JSON template — renders on Node, in the browser via WebAssembly, and fully on-device on React Native. No server, no upload, no generative model. Agent-callable over MCP.

Source