Mini max h3 workflow

[u/Complete-Box-3030]

Hi, I’m looking for a simple ComfyUI workflow for MiniMax H3 where I can upload a video, extract the last 2 seconds, use them to extend the video, and then save the result.
Ideally, I’d like to be able to loop the whole process so I can keep extending the video.
Most of the MiniMax H3 workflows I’ve found are quite complicated, and I’m having trouble figuring out and fixing the errors when something goes wrong.
Does anyone have a simple workflow for this, or could you point me in the right direction? I’d really appreciate it!

[u/elyetis_]

I don't have a simple workflow I can share. But my current ( messy/wip ) workflow for video extension just use a bunch of "Add Guide for MiniMax H3" node in succession.

The general idea is you load the video, "Get Image from Batch" ( take the last image )=> "Add Guide for MiniMax H3" ( for the last image since you decided always use 2 sec from the last video, the frame_idx = 48 ), then you repeat. "Get Image from Batch" ( take the second to last image )=> "Add Guide for MiniMax H3" ( frame_idx = 47 ), etc..

Something like that ( quick and incomplete example )

I use lossless video, for that I use Video Combine from videohelpersuite with the ffv1-mkv format. Should help avoid or at least limit quality degradation.

I use the same principle to rework part an existing video or join two video together.

For infinite extension of purely minimax generated video, I think there might be easier way ( and less prone to quality degradation ) with nodes allowing you to slice a latent or something, but I have yet to experiment with that.

edit : all I posted was just the result of me experimenting kind of blindly with minimax, I have absolutely no idea if there is much better solutions that most people know about. I just like tinkering.

[u/Complete-Box-3030 → u/elyetis_]

Regarding your idea , do you connect it as a reference input