Since the metadata is attached to a Tx not to the NFT, and is unique per transaction, there can not be such a thing as a Batch minting of NFT with each one having different metadata for example "image", is it?
I need to mint like 10 000ks NFTs, so i think my NFTs will all share same, image, and all i can change is the name and policy for doing them unique NFTs. Am I right?
EDIT: In fact it is not possible even that they satisfy the 721-Standar https://cips.cardano.org/cips/cip25/, is it?