Supercut

Supercut is a private AI video editor that lives entirely in your browser. You drop a video clip — MP4, MOV, or WebM up to 4GB — and then edit it by typing commands. Want to reframe for 9:16? Type it. Need captions with word-level timing? Say so. The tool processes everything locally, meaning your footage never leaves your machine. There's no upload progress bar, no waiting on servers, and it works even with your Wi-Fi turned off.

What sets Supercut apart is its chat-based editing approach. Instead of navigating complex timelines and menus, you describe what you want and the AI applies the edit. It includes over 40 tools: auto-captions in 19 languages via on-device Whisper, smart reframing that tracks faces to keep subjects in frame, audio cleanup to reduce background noise, color grades (cinematic, warm, cool, VHS), and speed adjustments from 0.25x to 4x. For more control, Studio offers a multitrack timeline with video, text, and audio lanes where you can trim, split, and even cut by deleting words from the transcript. An agent can propose edits, and you review and approve them before applying.

This tool is built for social media creators who post to TikTok, YouTube, Instagram Reels, X, and Shorts, as well as teams handling sensitive or unreleased footage that legally can't be uploaded to cloud services. It's also useful for making quick screen recordings with auto-zoom and camera overlay that look polished without manual keyframes. Supercut is free to try with no account needed, and it works fully offline — though a desktop app is available for native rendering and system audio capture.