Free open-source Vapourkit fixes MiniMax H3 video quality locally in minutes

Kim2091 · reddit · 2026-08-18

Reddit user Kim2091 upscaled and stabilized MiniMax H3 generated videos with their free open-source tool Vapourkit (Windows/Linux).

The workflow: a 2x upscaling model (NomosUni-span), a Temporal Fix pass to remove shimmering, plus grain and sharpening. Everything ran locally on a laptop in minutes; models are available via openmodeldb.info and the workflow file can be dragged straight into Vapourkit.

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