comfyui-workflows/optimized/image-to-video/minimax-h3-contex-loop-3070-compact-30s/README.md

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.