At the moment to generate NFTs we are accepting only audios and in the formats: mp3, wav and ogg. This is so because these are the formats supported by the Opensea marketplace, which is where we generate them and where we will send them to you (you will therefore need to have an Opensea wallet to receive them).
The possibility of also generating NFTs for videos will be opened shortly (the supported formats will be: mp4 and webm).