RTX 4090 timings for first/last-frame video: 4-image looping film in ~9 minutes, free node pack
Cybertect74 · reddit · 2026-11-10
A Redditor benchmarked first/last-frame video generation (MiniMax H3, LTX 2.5, Wan 2.2) on an RTX 4090: render time scales with pixels × frames, 1088×1344 is the 24 GB limit, and a 4-image looping film at 768×960 takes 9 minutes. They also released Infinite Movie, a free ComfyUI node pack that stitches stills into seamless looping films with auto prompts, A/B variants and RIFE x2, plus a fix for a ComfyUI inference-tensor crash.
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