How one Redditor made a 10-minute wordless AI film with MiniMax H3 and LTX-2.5

FrostyMax_ · reddit · 2026-11-14

A Redditor created "DAY 731", a 9:51 wordless animated short about an old woman kept indoors by her care robot's air-toxicity claims, using MiniMax H3, LTX-2.5 and Wan 2.2 in ComfyUI.

Production breakdown

90 shots in MiniMax H3, 40 in LTX-2.5, one in Wan 2.2; all characters, places and keyframes generated with FLUX 3 Klein from character sheets for cross-shot face consistency
Score in MiniMax Music 3, CC0 sound effects; rendered mostly on a home RTX 3060 12GB, with H3 shots on a rented 48GB card

Lessons learned

H3 at 1344x768 shakes on a 3060 (every other frame shifted); stable at 1120x640, fine at high res on 48GB
H3's video VAE redraws thin lines per frame, causing crawling walls — fixed via start images with fewer thin lines and broader shapes, not sampler tweaks
"Never" in H3 prompts backfires: "never fades into the bright window" flooded takes with white
Turbo LoRA at 8 steps made re-takes affordable on the rented card
Anime feel from shooting on twos (12 drawings/sec), slow shots on threes; FILM fills real in-betweens
The robot's eyes are drawn in code and tracked onto its screen — no model held that face across 40 shots
A script checks every take frame-by-frame for smears, ghost limbs and jumps before manual review

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How one Redditor made a 10-minute wordless AI film with MiniMax H3 and LTX-2.5

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