You draft at 480p because a take you may throw away should cost a dollar, not six. Once a take is the keeper, upscaling it is not only cheaper than regenerating at 1080p, it is the only way to get that take sharper: the video models record no seed by default, so a higher-resolution re-run gives you a different video, not the same one bigger. That is the whole argument for this lesson, and it is worth sitting with for a moment, because it is the opposite of how people expect video work to go.
This recipe has been run end to end on five deliveries between August 30 and September 3, 2026, and every number in it comes from those runs. The work itself is one instruction to Claude Code, and there is a fallback further down for doing it entirely in a desktop app if you would rather not open a terminal at all.