Chaining MiniMax H3 generations locally on a MacBook for longer video scenes

TgoAI · reddit · 2026-09-28

A developer shares their experience chaining multiple MiniMax H3 generations locally on a MacBook Pro to create longer video scenes.

The core challenge is clip-to-clip transitions: in dark scenes, small differences in brightness, tone, or geometry make the seam conspicuous. Part of the problem is that VAE round-trips darken the reference's shadows, hurting continuity in low-light footage.

They added an optional stage in the open-source tool Vpipe that adjusts the appearance and geometry of a continuation against its reference frame. The demo uses the standard setup where each new clip starts from the previous clip's end, and the author invites discussion on handling long-form H3 generation, especially dark-scene continuity.

Original post →

More from Multimodal

Multimodal channel →