Here I have for you my watermark mod.
With the Mod, you can use the F6 key to display a logo or text.
This is e.g. Good if you want to make several pictures or videos with watermark.
With F6 Activate the mod press F6 again the 2 watermark and press it again the watermark again.
So that is, you can insert 2 watermarks one for example. For videos and one for pictures.
How to change the watermark, you can read in the readme,
Which I have inserted you into the ZIP file of the mod.