The easiest way to install all the files needed for workflow use is to use one of my installation scripts.

To install the missing nodes, I created a script : ComfyUI missing nodes auto installer for WAN2.1 - v1.0 | Other Other | Civitai

Resources you need:

Files :

Recommendation :
24 gb Vram: Q8_0
16 gb Vram: Q5_K_S
<12 gb Vram: Q4_K_S

I2V Quant Model: city96/Wan2.1-I2V-14B-480P-gguf at main
In models/diffusion_models

CLIP : split_files/text_encoders/umt5_xxl_fp8_e4m3fn_scaled.safetensors · Comfy-Org/Wan_2.1_ComfyUI_repackaged at main
in models/clip

CLIP-VISION: split_files/clip_vision/clip_vision_h.safetensors · Comfy-Org/Wan_2.1_ComfyUI_repackaged at main
in models/clip_vision

VAE: split_files/vae/wan_2.1_vae.safetensors · Comfy-Org/Wan_2.1_ComfyUI_repackaged at main
in models/vae

UPSCALE MODEL: ESRGAN/4x_NMKD-Siax_200k.pth · uwg/upscaler at main
in models/upscale_models

Custom Nodes :

• ComfyUI-GGUF

• ComfyUI-KJNodes

• ComfyUI-Impact-Pack

• ComfyUI-VideoHelperSuite

• ComfyUI-Frame-Interpolation

• ComfyUI-Custom-Scripts

• rgthree-comfy

• ComfyUI-WanVideoWrapper

• ComfyUI-TeaCache