Add Watermark to Video

Put your logo or name on a video before you share it, so the source travels with the clip. Choose a logo picture (a PNG with a transparent background works best, SVG and JPG work too) or type a short text, then set its size, transparency and corner. The same watermark can be added to several videos in one go, and it can be limited to part of the video. Everything is done in your browser with the ffmpeg engine (about 30 MB, downloaded the first time); your videos and logo are never uploaded.

How to use this tool

1. Choose the logo picture first, or type the text watermark.
2. Set the position, width (as a share of the video width), opacity and margin, and optionally the time to show it.
3. Choose one or more videos; the result and a preview frame appear right away.
4. Check the preview frame and download the watermarked videos.

Formula

Watermark width = video width × width %; height follows the logo's shape; corner position = margin from the chosen edges

Sizes are relative, so the same settings look alike on 720p, 1080p and 4K videos, and on vertical videos the width percentage refers to the narrow side. The logo is scaled in high quality, made semi-transparent at the chosen opacity, and laid over every frame (or only between the chosen times). The video is re-encoded as H.264 at CRF 21; AAC and MP3 sound is copied.

Example

On a 1920 × 1080 video with width 15%, a 600 × 200 logo becomes 1920 × 0.15 = 288 × 96 px. With the default 3% margin (32 px of the 1080-px short side) in the bottom-right corner, its top-left corner sits at x = 1920 − 32 − 288 = 1600, y = 1080 − 32 − 96 = 952.