How to add watermark to the cover in batches?

[kop]

Now I have some audio files of my own, and I need to add a watermark to the cover, how do I add them in batches?

[ohrenkino]

Pictures are added "as is". So the picture would already have to have the watermark.
Here is a thread about pictures that should be overlayed with something else - which is not possible:

Overlay a cover image with already existing one

I am new to this community, but am using this software long days back, I am so impressed by this tag editing software, just wanna share some ideas. What if we can add a small cover image, like watermark and stuff that overlaps already existing cover image,. ? May be we can position the extra cover image by using mouse or by inputting padding like values.

[kop]

Well, thank you for your reply.

[Jimmy_Neutron]

@kop

Now I have some audio files of my own, and I need to add a watermark to the cover, how do I add them in batches?

Best off manipulating the covers in a graphics program, then embedding the resulting image using mp3tag. My favorite is FSViewer (freeware) that can batch process watermarks on many images (among many other capabilities).

[LyricsLover]

I'm just curious: Why do you add a watermark to your covers? What would be the real live use for this?