LongVie 2 in Plain English: How to Keep AI-Generated Videos Sharp, Steerable, and Five-Minutes Long “ Short answer: LongVie 2 stacks three training tricks—multi-modal control, first-frame degradation, and history context—on top of a 14 B diffusion backbone so you can autoregressively create 3–5 minute clips that stay visually crisp and obey your depth maps and point tracks the whole way through. What problem is this article solving? “Why do today’s video models look great for 10 seconds, then turn into blurry, flickering soup?” Below we walk through LongVie 2’s pipeline, show exact commands to run it on a single A100, …