1.) Create your first watermark
2.) Apply watermark on image or video
Add watermark on image or video via URL-Based API
This will not only overwrite originally set watermark, but will allow you to add different watermarks on each of your uploaded images and videos. Read more about URL-Based Transformations . Happy watermarking :) !
And for those who want it little bit easier we have created video tutorial that you can watch in action how we create and apply watermark on content.