Muting both image loaders is a legal way to run this — the optional inputs vanish
from the prompt and core reads that as text-to-video — but with no image to match,
the canvas came from ratio arithmetic and landed on 768x1312. Legal, and 41 rows
short of the canvas the model itself ships with, for no reason anyone could
explain.
Each match tier now names its own portrait fallback: 768x1344, 480x832, 352x608.
Tests assert all three are legal, portrait, and that full quality is the model's
own default rather than whatever the arithmetic produces.
manzakin
394173d0fd