Video 1: Watermark with Image
The video above shows an Image / Logo ("S3MV") as the watermark in the bottom-right corner, just above the player's control bar.
Opacity of the image has been set to 0.5.
And the logo is clickable.
Opacity is how transparent (or opaque) the watermark is. 0.1 opacity, means it's almost transparent. 1.0 opacity means full-strength brightness.
Video 2: Watermark using Text
The video above shows Text ("SubscribeMe.fm") as the Watermark in the bottom-right corner, just above the player's control bar.
The color of the text has been set to black (#000000), and and background color is set to white (#ffffff). You can choose any colors for either the text or the background using the easy-to-use color picker.
The text watermark is clickable. And the Opacity of the Text Watermark has been set to 0.3.