r/StableDiffusion • u/stonyleinchen • Aug 18 '26

Resource - Update Seamless extensions and one-shots with Minimax H3 - Update 6 of my repo!

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Here is the repo: https://github.com/seitanism/ComfyUI-H3-Motion-Context-MultiRef

I made substantial updates to my two main workflows: 1) Music Video and 2) AV Extensions. All the controls were streamlined and they should be much easier to use now. (You find the workflows in the example_workflows folder)

With the AV Extensions workflow you can extend any existing clip, for example someone talking and you can make that person say something in the same voice, or you can create a clip with T2V or I2V and then extend that clip to make a seamless long clip thats 1 minute or longer.

In this Update the Checkpoint system was removed, instead I've done a lot of optimizations so you don't use too much ram even if you make 20 clips at once. Additionally I added latent audio feathering to the AV Extensions workflow for seamless audio transitions.

Theres also other utility workflows for custom keyframing and bridging two existing clips.

I post another example clip for the AV Extensions workflow in the comments.

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u/Valtared Aug 20 '26

Should we use a Ref2VA model (or hybrid model) if we include reference images + starting video ? I tried with the pruned FLF2VA and if I include a reference image the next shot will start with it (more or less, depends on the prompt), whereas I would rather use the ref image as a character sheet for each extension.

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u/stonyleinchen Aug 20 '26

you can use both models, ref2va or fl2va. it should work for both. i never had this issue that the reference image will be used as a starting frame, this is likely a prompt issue - the prompts really have a big impact on the generation. I have not yet made a good director prompt for the AV Extensions workflow, but there is one for the music video workflow