The same character has to have the same face across a dozen shots — the hardest thing in AI video creation. DOTV's way to get it is to generate one reference portrait of them first, then carry that picture along as a reference every time a shot is generated; that is what preparing assets means. An "asset" is anything in this film that comes back again and again and has to look the same. There are three kinds:
- Characters — people. The same person in two looks counts as two assets ("Lin An, present day" and "Lin An, period costume" get one each), or the model will not know which version to draw.
- Scenes — places. The overpass, the tunnel, the convenience store.
- Props — objects that keep appearing. Those running shoes, that cup.