MiniMax H3 3070 Single 10s 1152x640 R2V Master

Summary

Best-current single-shot MiniMax H3 reference-to-video master for a 3070 / 8 GB box when the goal is one strong 10s clip before post-upscale. This is the first proven higher-resolution step above the safer 480p chain masters while still completing locally.

Status

best-current-single-10s-r2v-master

Workflow asset

workflow.json

Built from

optimized/image-to-video/minimax-h3-best-current-r2v-master-480p-3x10s/
the successful 1152x640 max-resolution probe run from tmp/comfyui-maxres-probe/2026-08-16T21-36-15-454Z/

What this proves

1280x704 OOMed on the tested 3070 / 8 GB
1216x672 OOMed on the tested 3070 / 8 GB
1152x640 completed successfully as a single 10s R2V render

Key model stack

minimax_h3_ref2va_pruned_int8_convrot.safetensors
qwen3vl_32b_heretic_minimax_h3_nvfp4.safetensors
minimax_h3_video_vae_int8_convrot.safetensors
minimax_h3_audio_vae_fp32.safetensors
minimax\minimax_h3_turbo_v4_step600_ema.safetensors

Main changes

raises the working canvas to 1152x640
keeps the single 10s duration target
keeps the low-VRAM attention and chunked feed-forward path
keeps the latent upscale stage plus RTXVideoSuperResolution hook for the post-pass workflow shape
preserves the exact proven prompt graph instead of prematurely generalizing away the validated settings

When to use this

use this when you want the best current single 10s local MiniMax render before RTX upscale
use the 480p chain masters when the priority is longer continuation or safer multi-clip iteration

Notes

The bundled prompt and image references are the validated probe example.
Replace the demo reference image, prompt text, and output prefix for your own run after loading the workflow.
Treat 1152x640 as the current confirmed ceiling for this graph on the tested machine until a tighter probe proves otherwise.