Default image description(3.0.2)

[web3]

Hi,

is there any option how to set default image description? E.g.:

This is default description.
+ my description

[GJC Web Design]

admin->shop->media files - find it and set the parameters

[web3]

I know that i can add description like that, but i mean "default". I would like add this description for all images. I have 1000 products with image and i would like add same description for all of them.  So adding it one by one is not for me.   

[GJC Web Design]

then just add the words in the template or do a general import into the medias table