Minimax-H3 can generate 42s videos natively on an RTX Pro 6000 in 80 minutes

The maximum frame count allowed by the native "MiniMax H3 Reference to Video" node technically is 1008, even if that's way over the training range of the model, which is 324 frames. But why not try? So I ran a few tests and although the result is a bit sloppy and the shots are not perfectly following the prompt order, I would say it's already impressive the model can generalize that way and generate videos 3 times longer than it was trained on. The video above is 42 seconds long, 1008 frames 1376×768 @ 24fps. It took 4947s i.e. 1 hour and 22 minutes on an RTX Pro 600 and VRAM peaked at around 90GB. Find the workflow file here. It also includes an optional SeedVR2 upscaling part at the end. NOTE: I think this is extra dumb and see no reason to generate 42s-long videos this way, I just wanted to try to push the model a bit further than its limits. You loose quality and control and it increases processing time by quite a lot. I highly suggest you generate shot by shot instead. The prompt for the video above is the following (Wheel of Time inspired for fantasy fans!). integrated_multimodal_description: [Shot 1] Live-action, cinematic, epic high fantasy, shot on large-format film with anamorphic lenses and natural dawn light, a sweeping aerial wide shot glides low over a vast green upland as a strong wind rushes across the hills, bending long grass into rolling silver waves and driving ragged clouds across a pale golden sky toward distant snow-capped mountains. The camera performs a tracking shot with large amplitude at fast speed, skimming forward a few meters above the ridgeline as grass blurs beneath the frame. An unseen older woman with a calm, weathered, low voice (S1) says in an off-screen voiceover: [English] Every age ends where it began, and no one still living remembers which age this is. [Shot 2] At 00:06.000, the shot cuts to a close-up of a serene dark-haired woman with an ageless pale face, wearing a deep-blue high-collared gown and a golden serpent ring on her right index finger, standing in shadow; she lifts both open hands and delicate glowing threads of white, red and blue light braid and weave between her fingers, sparks drifting upward through the air. The same off-screen voice (S1) continues seamlessly across the cut: [English] The pattern does not ask us. It only takes the thread. while her lips remain completely closed. The camera pushes in with small amplitude at slow speed on the weaving light, soft rim light catching suspended dust motes, and the threads emit a faint crystalline hum. [Shot 3] At 00:11.000, the shot cuts to a grand wide shot revealing a gleaming white spire city built on an island in a broad river, a single immense white tower rising far above white domes, arched bridges and tiled roofs, with pale banners snapping hard in the wind beneath a low morning sun. The camera pulls out with large amplitude at slow speed while pedestaling up, revealing the full river bend and the city walls. [Shot 4] At 00:16.000, the shot cuts to a low wide shot of a horde of hulking horned beast-men in black scale armor charging across a cracked red plain beneath a blood-dark sky, dust and torchlight churning around their legs, snouted faces and curved blades catching the firelight. The camera trucks left with large amplitude at fast speed, running parallel with the charge as bodies sweep through the foreground. [Shot 5] At 00:21.500, the shot cuts to a slow medium shot of a tall motionless figure in a black cloak standing alone in the churning dust, its face utterly smooth and eyeless, pale as wax, with no features above the mouth; the shadow beneath it spreads outward across the cracked ground against the direction of the light while the charging horde streams past behind it in soft focus. The camera pushes in with small amplitude at slow speed as the cloak hangs completely still despite the wind. [Shot 6] At 00:26.000, the shot cuts to a heroic medium shot of the same dark-haired woman in the deep-blue gown, the golden serpent ring clearly visible, standing on scorched ground and thrusting one hand forward as a searing bar of pure white light lances horizontally across the battlefield, incinerating a line of the horde into drifting embers while heat haze ripples and warps the air behind the beam. The camera shakes slightly at the instant the beam fires, then pushes in with small amplitude at fast speed on her face, her eyes reflecting the white glare. [Shot 7] At 00:31.000, the shot cuts to a wide shot of the aftermath as thousands of orange embers drift upward through settling black smoke, silhouetted survivors kneeling among broken shields, and a torn white banner bearing the words "THE PATTERN REMEMBERS" hanging from a splintered pole in the left foreground. The camera performs an arc shot with large amplitude at slow speed around the standing woman, keeping her centered as the burning field rotates behind her. [Shot 8] At 00:36.000, the shot cuts to a macro close-up of an ancient metal emblem, a perfect circle split into interlocking black-and-white teardrop halves, glowing faintly from within, that dissolves into a colossal seven-spoked wheel of white light turning slowly against a deep starfield while countless threads of colored light weave outward into a vast luminous tapestry. The camera pulls out with large amplitude at slow speed until the wheel occupies only the center of an endless woven pattern, and the off-screen voice (S1) returns once more: [English] And it turns again, whether or not we are ready to be woven into it overall_soundscape: Wind roars across the open hills and hisses through deep grass before thinning into a faint crystalline shimmer of woven energy and drifting sparks. Distant bronze bells, snapping banner cloth and river water rise over the white city, then give way to a thunderous roar of stamping hooves, clashing armor and guttural war cries under a hollow, airless silence around the motionless cloaked figure. A deep concussive whoom of released power sweeps the field, followed by crackling embers, settling debris and the low breathing of survivors. Everything resolves into a wide, weightless cosmic hum. non_diegetic_music: A single low string drone at a slow tempo, joined by layered brass that rises in stepped swells over accelerating timpani and a wordless female soprano line. The rhythm tightens into hammered strings and percussion at high volume during the charge, cuts out entirely for one beat, then returns as a single sustained orchestral chord with shimmering high strings that slowly decreases in volume. submitted by /u/vanonym_ [link] [comments]

Source: r/StableDiffusion | 2026-08-13