This is possible by creating an additional menu item in Studio:

- Go to studio and choose "Edit menu"

Choose "New menu":

Use the existing model "product image"

Add the list view to the model:

Add the product template field to the list view:

Import the images in the new model:

Hi  Alex Dolmage,

I think this video can help you: https://www.youtube.com/watch?v=VMJ0UI1crz4&list=PLSKcWRTtEl5qzvRaI-VTGavfReiHS_EEb&index=3

Did you find the way to import multiple images for the same product?

Hi,
Refer to this URL you can import multiple images for each product
Import the images: To import the images for each product, you can use the Odoo's import functionality. Prepare an Excel or CSV file with the necessary data, including the product's unique identifier (usually the product's internal reference or barcode) and the file path of the images corresponding to each product.

https://www.cybrosys.com/blog/overview-of-odoo-16-product-image-from-url-app

Hope it helps

https://www.odoo.com/fr_FR/forum/aide-1/is-it-possible-to-upload-product-images-using-ftp-protocol-214816

one way to upload product images is 

to upload such images with importing from a file where the image fied is set as an url with the following template

http://"source dbname"/"path within the db"/ image file name like GB0167_1.jpg"

is there a similar way to import images using a ftp protocol? and if so what would be the syntax?

the ftp protocol seems NOT TO BE PLANNED BY ODOO