How this logo remover works
This tool hides a corner logo, a watermark or a channel bug by blurring one rectangle on every frame. You drag a box over the mark and resize it by its corner, and VimCut blurs only that area while the rest of the picture stays as it was. The original file is not changed.
It blurs the spot, it does not rebuild whatever was behind it, so a large or bright watermark may still show as a smudge. The video is re-encoded to an MP4 with H.264 video and AAC sound, and the sound is kept. The work runs on WebAssembly (ffmpeg.wasm) in your browser, so the file stays on your device. Use Play and the seek bar to check other moments before you run it. The blur is applied to that spot on every frame, not only the frame you are looking at. A progress bar shows how far the job has got.