- This is a SVI workflow that enables first-frame-last-frame for continued smooth videos.

- What is special about this workflow is that it uses my own custom nodes to save the latent as a file, and then loads the latent into the workflow so you can freely manage what video clip you want to tinker with.

- These two custom nodes are provided along with the workflow; just drag the bvga_nodes folder into your custom nodes folder.

- It's very convenient to use, as you're able to easily adjust prompts, motion loras, etc, for each stage of the video. You can keep experimenting before you move onto the next segment. And can even start back from previous segments by loading the old files!

Credit to https://civarchive.com/models/2232205?modelVersionId=2820076, whose workflows finally got SVI FFLF working for me, and I learned a lot from.

You will need the following SVI LoRAs:

High: https://huggingface.co/Kijai/WanVideo_comfy/blob/main/LoRAs/Stable-Video-Infinity/v2.0/SVI_v2_PRO_Wan2.2-I2V-A14B_HIGH_lora_rank_128_fp16.safetensors

Low: https://huggingface.co/Kijai/WanVideo_comfy/blob/main/LoRAs/Stable-Video-Infinity/v2.0/SVI_v2_PRO_Wan2.2-I2V-A14B_LOW_lora_rank_128_fp16.safetensors

v1.1 features various fixes and improvements.
Notably:

There are now 2 separate workflows provided:
- 3-k-sampler workflow to get as much quality as possible out of the steps.
- MoE-k-sampler workflow, which automatically optimizes the scheduling.

Updated the latent saving and loading custom nodes:
- v2 nodes better capture the full latent data, to ensure quality is retained.
(Both the v1 and v2 nodes are included in the new folder. You can simply replace the old bvga_nodes folder with the new one)

Fixed:
- SVI nodes are no longer used in the starting video segment
(which in certain situations degraded quality)
- latents are no longer trimmed in segments that don't require it
(which was reducing video length unnecessarily)