Video Watermark
Add a text or image watermark to supported videos online. Configure its position and appearance, preview the clip, and download the result.
Watermark Settings
Placing a Visible Mark That Stays in Frame
Use Video Watermark to overlay text or an image logo onto a supported video file. The primary goal is to ensure your branding remains readable even when the clip is scaled, cropped, or viewed on small screens. The tool accepts MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP formats.
A watermark placed near the edge of the frame is often the first element removed during platform-specific cropping. To avoid this, position the overlay over content that cannot be removed without ruining the file, rather than in the outer margins. This ensures the mark survives standard aspect-ratio adjustments.
Setting Up the Overlay
- Load your file — Click the uploader or drag and drop a supported video file into the designated area.
- Adjust appearance — Use the control panel to select the text or image, set the opacity level, and position the mark on the screen.
- Preview the motion — Play the clip to check how the watermark interacts with moving elements. Confirm the opacity is readable at a small scale, not just in the full-size preview.
- Download the result — Click the apply and download button to save the watermarked copy.
How Processing Works and What to Inspect
Your original file is never changed. The work is done on a copy in the current tab by a WebAssembly build of ffmpeg. The result arrives as a separate download, so your source file remains intact on your device.
Before downloading, inspect the video frame by frame. Check the placement against the busiest part of the content to ensure the mark does not obscure critical visual information. Because processing happens locally via WebAssembly, there is no server-side queue or account requirement. The practical processing ceiling is your device's memory and the limit shown beside the uploader.
Practical Use Cases for Motion Branding
- Client Review Cuts — Apply a subtle, low-opacity logo to draft footage to signal that the file is a working copy rather than a final master.
- Educational Content — Add a text watermark in a corner over static or predictable background elements to maintain visibility without distracting the viewer.
- Social Media Adaptations — When re-exporting for specific platforms, position the mark over content that is safe from center-cropping to ensure it remains visible in feed views.
Video Watermark 常見問題
What does Video Watermark do?
Add a text or image watermark to a supported video. Adjust the available position and appearance controls, preview the clip, and download the result.
Which files work with Video Watermark?
This category commonly supports MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.
Can I remove a watermark from a file?
Only if you own the source or have permission to edit it. Removal tools patch the pixels around the mark and cannot restore what was covered, so keep the unwatermarked original.
Will my original file be changed?
No. The work is done on a copy in this tab by a WebAssembly build of ffmpeg, and the result arrives as a separate download, so your original is still there if you need it.
How is my file processed?
It is not uploaded. The processing is done locally by a WebAssembly build of ffmpeg, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Why should I check the watermark at a small size?
Opacity settings that look legible in a full-size preview often become indistinguishable when the video is scaled down to mobile thumbnails or embedded players. Checking the mark at a small scale ensures the branding remains readable during actual consumption.