Blender camera motion + MiniMax H3 ref2vid in ComfyUI (workflow + prompts)

I’ve been experimenting with building the camera move in Blender before generating the AI video. This example combines a five-second mannequin render with a character reference sheet and a waterfront background image in MiniMax H3’s reference-to-video workflow.

How I made it:

1. Used Codex CLI with Blender MCP to build a simple mannequin scene and animate the camera.

2. Kept the body planted while the head and eyes followed the lens.

3. Refined the move to stay mostly waist-up, with fast eased transitions, short holds and one extreme closeup near the end.

4. Rendered the Blender reference at 1080 x 1080, 30 fps, for five seconds.

5. Loaded that clip and the two reference images into ComfyUI, then used a prompt that assigns each input its role: character, environment or camera motion.

The Blender sequence returns to its opening composition. The generation prompt asks for the same loop, but the output still needs checking for identity drift, framing changes, background consistency and the loop seam.

My generation settings:

– RTX 5070 Ti + 32 GB RAM

– 20 steps at approximately 53 seconds per iteration

– 0.6 resolution setting and 1:1 aspect ratio

– No turbo LoRA

That’s about 17 minutes 40 seconds for sampling at the reported rate, before loading and decoding. The Blender source resolution and the generation resolution are separate settings. You can change the generation size and aspect ratio in the workflow.

Project files, character/background references, Blender scene, workflow and prompts:

https://drive.google.com/drive/folders/1NVCYIJahZADTAE_nh0kcXyen4shrI5rW?usp=sharing

Has anyone tried a similar setup with more complex camera paths? I’m curious how well it holds up with stronger parallax or longer sequences.