comfyui-workflows/optimized/image-to-video/minimax-h3-3070-single-10s-1152x640-r2v-master/README.md

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.