关于 视频水印
This tool burns a watermark into every frame of your video using the Canvas and WebCodecs APIs — entirely in your browser. Choose a text stamp or a PNG/JPG logo, place it anywhere with a 3×3 position grid, and fine-tune size, opacity, colour and margin. A tiling mode repeats the watermark across the whole frame for maximum protection.
Nothing is uploaded, so confidential footage stays on your device. The result is a freshly encoded MP4 or WebM with your watermark permanently applied — visible in any player, unlike overlay-based metadata hacks.
使用方法 视频水印
- Open your video
Drop an MP4, WebM or MOV file. A preview appears together with the watermark controls.
- Design the watermark
Pick text or a logo image, then set position, size, opacity, colour and margin — or enable tiling to repeat it across the frame.
- Apply and download
Press Apply watermark. Every frame is re-encoded with the overlay baked in; preview and download the finished file.
常见问题
Can the watermark be removed later?
No. The watermark is rendered into the actual pixels of every frame before encoding, so it cannot be switched off or stripped out like an overlay track.
What logo files can I use?
PNG (including transparency), JPG and WebP images all work. The logo is scaled relative to the video width so it keeps the same proportions at any resolution.
Will the watermark quality degrade my video?
The video is re-encoded once at your chosen quality. At the Medium or High setting the difference is visually negligible, while Low produces smaller files for quick sharing.