ComfyUI OpenCut

ComfyUI-OpenCut

**[English](README.md) | [中文](README_CN.md)**

A powerful, privacy-focused video editor integrated directly into ComfyUI. This plugin brings professional video editing capabilities to your ComfyUI workflow without any server-side processing.


🆕 What's New in v0.4.0

This release rebases the embedded OpenCut onto upstream `main` after ~8 months of heavy development (≈364 commits since the v0.3.0 build on 2025-08-30). The highlights below are from the OpenCut project itself — they apply to the editor running inside this plugin as well.

Rendering engine — WebGL ➜ Rust/WASM GPU renderer

• New GPU renderer migrated from WebGL to wgpu compiled to WASM (with a WebGL fallback while WebGPU support stabilizes in browsers).
• Time, effects, and mask logic split into dedicated Rust crates (opencut-wasm) — shared between web and the new desktop build.
• Batched GPU command encoding, degraded-renderer banner, and graceful handling when no GPU is available.

Keyframes & animation

• Rewritten animation system using scalar-channel bindings.
• Graph editor for flat keyframe segments — a new popover lets you edit multiple properties at once.
• Expandable keyframe lanes directly in the timeline.
• Keyframes now wired for opacity, text color, every background property, and per-axis position animation.
• Clipboard-level keyframe paste.

Effects & masks

• New WebGL effects system — starts with a Blur effect and per-clip effect stacking with asset sorting.
• Cinematic bars, diamond, heart, star, and custom/text masks, with stable background-blur previews.

Timeline & editor UX

• Move/resize/split/delete multiple elements at once.
• Clip volume line visualized directly in the timeline.
• Waveform rendering improvements and correct audio waveform height.
• Timeline auto-scroll while dragging clips.
• Copy/paste for elements; ripple support for element resize.
• Select-on-insert; centra