I built a browser video editor where you can verify no footage is uploaded
The article describes a browser-based video editor called Aethercut that allows users to verify that their video footage is never uploaded to any server, processing everything locally on the user's device for privacy and security.
Background
Aethercut is a browser-based video editor that processes all footage client-side (in the user's browser) rather than uploading it to a server. This addresses privacy and security concerns in remote work, journalism, legal, and classified settings where sensitive video cannot leave the device. The "you can verify no footage is uploaded" claim is made possible by open-source code, local processing via WebCodecs and WebGPU APIs, and techniques like recording network traffic to confirm no data is sent externally. The tool competes with cloud-based editors like Canva, Kapwing, or Adobe's web apps, and with server-based enterprise video platforms. Its value proposition hinges on verifiable privacy—anyone can inspect the code or monitor the browser's network connections to confirm no upload occurs.