Herrgotts H3 Infinite Continuation Suite: Long H3 Videos in ComfyUI

Herrgotts-H3-Infinite-Continuation-Suite is a ComfyUI node and workflow suite for creating long MiniMax H3 videos by chaining FL2VA first/last-frame clips while preserving motion and native audio between segments. It is an experimental community project — not an official MiniMax continuation mode — but it directly targets the main limitation of H3's FL2VA path: continuity at clip boundaries.

Frame from the project's 7-clip example generation

The problem it solves

FL2VA clips give strong keyframe control and quality, but continuity usually breaks at the cut: H3 often reaches the last frame early and freezes for the final part of a segment, so simply reusing the previous clip's end is unreliable. This suite keeps a short section of the previous clip directly in H3's video + audio latent context, automatically finds a safe handover before the frozen tail, aligns it to H3's temporal latent structure, and uses the same metadata for final stitching.

The goal is not just to make a clip longer: each new FL2VA segment gets a quality reset and fresh keyframe anchors, while motion and audio continue naturally instead of restarting at every boundary.

Example generation

7-clip / ~61-second example generation: seven separate FL2VA segments stitched automatically with the included Saved Chain workflow. No manual editing was performed at the six clip boundaries.

Tested settings from the project: Balanced Auto Handover, context_frames = 22, Safe Tail Bridge of 2 frames, video crossfade of 4 frames, audio de-click crossfade of 15 ms.

Main features

• Direct video + audio latent continuation without decode/re-encode handover
• Automatic safe handover point detection before the frozen tail of each segment
• Alignment to H3's temporal latent structure and final metadata-based stitching
• Bundled example workflows: Start, Continue, 3-clip showcase (auto-stitch) and Saved Chain

How to use it in ComfyUI

1. Install the suite into ComfyUI/custom_nodes/ and restart ComfyUI.
2. Start from the included Herrgotts_H3_Infinite_v1.2_01_Start.json workflow to generate the first FL2VA clip.
3. Use the Continue workflow for subsequent segments, and the Saved Chain workflow to stitch the whole generation.

Download Start workflow

Availability

• Code and workflows: HerrgottMargott/Herrgotts-H3-Infinite-Continuation-Suite on GitHub
• Example video: 7-clip / ~61-second generation available in the v1.2.0 release