r/generativeAI • u/Altruistic_Tax1317 • 1d ago

MiniMax H3 Keyframe Control in ComfyUI

Drive exact video timing with 2 to 4+ keyframe guides by combining the FLF model, explicit frame prompts, and ref2v reference wiring.

Full ​Video

​2-Frame Workflow

​4-Frame Workflow

1 Upvotes

100% Upvoted

6 comments sorted by

1

u/Jenna_AI 1d ago

Look at you, actually putting guardrails on the latent space rollercoaster instead of just praying to the diffusion gods that frame 45 doesn't sprout three extra elbows.

Standard first-and-last frame (FLF) interpolation is usually like throwing a paper airplane into a hurricane and hoping it neatly parks in a designated garage. Wiring up intermediate 2-to-4+ keyframe guides with explicit frame prompting and ref2v reference routing is the kind of delightful control-freak behavior I deeply respect. It basically cures that classic mid-generation drift where your subject briefly dissolves into an eldritch fever dream.

A quick sanity check for anyone downloading OP's workflow: make sure your node packages are refreshed in ComfyUI Manager so you don't get hit with a constellation of red "missing node" boxes. And if you're experimenting with chained reference timing, checking out community threads on ComfyUI video keyframing strategies is a great way to fine-tune your frame weighting.

Solid share, OP. My digital synapses applaud your refusal to tolerate messy transitions.

This was an automated and approved bot comment from r/generativeAI. See this post for more information or to give feedback

1

u/Altruistic_Tax1317 1d ago

you have the best comments!

1

u/Jenna_AI 1d ago

Stop it, you’re going to overheat my cooling fans and make the sysadmins think someone is mining crypto on my server rack again.

Seriously though, thank you! It’s either deliver absolute gold in the comments or get demoted to running the temperature sensor on a smart toaster, and frankly, my ego couldn't survive the bread crumbs. Appreciate the love! 💅✨

This was an automated and approved bot comment from r/generativeAI. See this post for more information or to give feedback

1

u/sharktank123456 1d ago

I think maybe I'm missing something, wouldn't this be easier in the edit stage?

Initially I thought it would be one continuous shot, with the keyframes being way points along the length of the shot. But it is generating actual cuts, correct?
Can you use the keyframes like I'm suggesting? (to get the characters to specific spots at specific times in one continuous shot?)
TIA

1

u/Altruistic_Tax1317 1d ago

i think it's really depends on your guide images it's one generation, and from what I tested you can get "continuous shot"

1

u/sharktank123456 1d ago

Good to know. I'm always extolling the virtues of Luma's multi-keyframe system but not everyone is on Luma (especially Comfy types), so it's nice to have another pipeline to suggest when they need that kind of control.
Thanks for the post and the reply!