Hey there I just minted a new token that is a Mp4 video file with an associated thumbnail stillframe and on Manifold it plays the video as expected, but the actual mint on Opensea just shows the image thumbnail
Manifold link: Tristan Rettich - Orb Keeper #1 | Manifold
OS: https://opensea.io/item/ethereum/0x5b7a2d1240d6e3b9e664fe3f9dc6e9a15f971119/44