Another Wan 2.2 SVI I2V workflow.
I tried to keep this relatively basic with no subgraphs and only a few set/get nodes, hopefully it is digestible for beginners.
There are three separate workflows used to create extended videos:
i2L start - create first clip, save to latent file
Once you're happy with the clip, copy the latent file to the input folder
i2L extend - create subsequent clips loading previous latent file and saving to new latent file
Select previous clip latent file, generate subsequent clip, once happy copy it to the input folder
L2V combine - combine all latent clips and convert to video
Once you have all the clip latent files, load them into the combine workflow and generate the final video
The 3-workflow system is nice in that you can easily re-roll clips, managing the latent files externally as needed, allowing you to curate to your liking. You can keep extending as long as you like then output to video when you're happy with it. I've found many advantages to working with clips as latent files. However it also means you have to babysit each clip, manually moving the latent file over after each gen - this system isn't designed for "set-and-forget" type of work.
Custom nodes
KJ
WanMOEScheduler (technically optional)
Impact (for wildcard encoder, technically optional)
VHS (for combine stage, optional, just replace with save-to-video technique of choice)
VFI (for combine stage, optional)
Adding loras
Keep the additional lora weight on low noise to 1.0 or less. I've found that too much lora on low noise causes very noticeable degradation.
Discussion
This is basically a "classic" triple-sampler setup inspired by one of KJ's workflows, but using WanMOEScheduler instead of shift. It is set up for 4/2/3 steps, 9 total. The goal was to ensure the sigma values aligned for the handoff between each sampler, and to have the high/low transition at 0.9 sigma as I've seen officially recommended.
I do 480p for nearly everything and still sometimes get artifacts, particularly with realistic images where the character blinks the eyes can look weird for a frame which is off-putting.