The purpose of this module is to provide an ability to extract the metadata from file and populating Media Asset entity fields when an image is uploaded to Magento and also provide an ability to update the metadata stored in an image file.
For information about module installation in Magento 2, see Enable or disable modules.
Extension developers can interact with the Magento_MediaGalleryMetadata module. For more information about the Magento extension mechanism, see Magento plug-ins.
The Magento dependency injection mechanism enables you to override the functionality of the Magento_MediaGalleryMetadata module.