Use case: a family sci-fi short made with MiniMax H3 on a home PC
Chris Beach made a short space film starring his family, with every shot generated locally by MiniMax H3 in ComfyUI on one RTX 5090. He published the full workflow, render times and electricity cost.
What it does
Each shot used H3's reference-to-video mode with family photos and images of the ship, cockpit, spacesuit and a toy giraffe. The prompt assigned pictures to subjects ("Subject 1 is the 7 year old boy in Pictures 1, 2 and 3") and described the action shot by shot, in camera terms like "the camera trucks right".
The ComfyUI workflow was adapted from the community DaSiWa MiniMax H3 workflow. Clips were rendered at 1376×768, 24 fps and 25 steps, upscaled 1.5× with NVIDIA RTX Video Super Resolution, interpolated to 48 fps with FILM, then edited in DaVinci Resolve.
Results and limits
A 12-second clip took about 10 minutes on the RTX 5090, and each shot needed several takes. Sometimes he edited a favorite frame in GIMP and fed it back as a reference.
The whole film, including discarded takes, took about 32 hours of rendering and 23.5 kWh, roughly £5.44 in electricity. He apologizes for inconsistent gravity and continuity errors.
Worth knowing
The ships were made with the Krea 2 image model, and everything ran on Ubuntu Linux. Users in the EU, UK, US and South Korea need to request a license from MiniMax via the H3 License Request Form (platform.minimax.io/h3-license) before use.
Try it yourself
Use as references: [3 photos of your actor], [prop image], [set image]. Prompt: "Subject 1 is the [person] in Pictures 1, 2 and 3. Subject 2 is the [prop] in Picture 4. SHOT 1: [action]; the camera trucks right, pedestal down at low amplitude."