MiniMax H3 Contex Loop 3070 Compact 30s

Summary

Compact MiniMax H3 imported-video extension master tuned around the smaller working stack Chris validated today.

This variant keeps the Contex Loop existing-video flow, swaps in the lighter w4a8 transformer and compact video VAE, points the stock source to 1.mp4, and stretches the generated extension to 30 seconds total across two 15 second scenes.

Status

best-current-compact-existing-video-test
queued-live-test

Workflow asset

workflow.json

Built from

ethanfel/ComfyUI-MiniMaxH3-Contex-Loop
example_workflows/MiniMax H3 Extend Existing Video Model Workflow.json

Key model stack

minimax_h3_ref2va_pruned_w4a8_mixed.safetensors
qwen3vl_32b_heretic_minimax_h3_nvfp4.safetensors
minimax_h3_video_vae_int8_convrot.safetensors
minimax_h3_audio_vae_fp32.safetensors
minimax\\minimax_h3_fl2v_lightx2v_turbo_4step_v0.1_comfy.safetensors

Main changes

set generated duration to 30s total via two 15s scenes
kept 5 step defaults for the compact stack
set source video to 1.mp4
disabled source prepend so the extension target stays 30s
kept context_length=22, encode_mode=video, anchor_mode=head

Notes

This is the saved repo version of the optimized flow.
For unattended queue testing, the live queued run uses the compact MiniMax prompt graph directly so it can enter the Comfy queue immediately while other jobs are still running.