Gemini Video Watermark Remover

Remove the visible Gemini and Veo watermark from videos you generated. Frames are decoded, cleaned and re-encoded entirely in your browser, so your video is never uploaded.

Image Tools

Quick answer:To remove the visible Gemini or Veo watermark from a video, open the original MP4 in the tool, let it detect the corner watermark, export, then compare and download. Processing runs in your browser using WebCodecs, keeps compatible audio, and removes only the visible mark, not the invisible SynthID.

Choose a video below. Processing runs on your device, so long or high-resolution clips can take a while and use a lot of memory. A desktop browser and a clip of about 10 to 30 seconds work best. Open the tool in a full window for the most room (and faster processing where your browser allows it).

Azam Sharieff· Finance & Tools Reviewer

Last reviewed: 2 October 2026

How video watermark removal works

The tool decodes your video frame by frame with your browser's WebCodecs support, finds the watermark in the bottom-right corner, reverses its blend with the picture underneath, cleans up any faint residue with a small on-device AI model, and re-encodes the frames into a new MP4. If the video has a compatible audio track, it is passed through so sound is preserved.

The engine is the open-source gemini-watermark-remover project by GargantuaX (MIT licence). It includes Mediabunny (MPL-2.0) for video handling and ONNX Runtime Web (MIT) for the model; see the project licence.

Tips for the best result

Start from the original download. Videos that were trimmed, cropped, screen-recorded or recompressed by a messaging app may not have the watermark where the tool expects it, in which case it will report that nothing was detected. Short clips of 10 to 30 seconds process quickly; long or 4K videos take much longer and need plenty of memory.

Use a recent desktop Chrome or Edge, close heavy tabs and keep the page open until the export finishes. Because the video is re-encoded, the output is a new file and its size may differ from the original. Need a still frame instead? Use the Gemini Watermark Remover for images.

Use it responsibly

This tool is meant for videos you generated yourself. It removes only the visible mark. It does not remove invisible provenance signals such as SynthID, and it does not make an AI-generated video any less AI-generated. Do not present AI video as real footage, and follow the terms of the service you used and any AI-disclosure rules on the platforms where you publish.

Everything happens locally. Your video is not uploaded to ToolsDock. To prepare images for the video, or to resize thumbnails, see the Image Resizer.

Frequently Asked Questions

Is my video uploaded to a server?

No. The video is decoded, processed and re-encoded in your browser and never leaves your device.

Does it keep the audio?

Yes, when the audio track uses a codec the MP4 output supports, it is passed through unchanged. Otherwise the result may have no sound, so check before deleting your original.

Why does it say no watermark was detected?

The video was probably edited after download (trimmed, cropped, screen-recorded or recompressed), or it does not carry the standard Gemini or Veo mark. Try the original file.

Which browsers work?

A recent desktop Chrome or Edge works best because they support the WebCodecs video encoder and decoder. Other browsers may not be able to export.

Why is it slow?

Every frame is processed on your own device. A 10-second 1080p clip has hundreds of frames, and longer or higher-resolution videos take proportionally longer. Closing other tabs and using a desktop computer helps.