Script to download all the required models:

from mmget import mmget
from dotenv import load_dotenv
load_dotenv(".env") # Load your huggingface access token if available

# Replace `/workspace` by your ComfyUI installation path

mmget(    
).dl(
    "https://huggingface.co/Comfy-Org/HunyuanVideo_repackaged/blob/main/split_files/diffusion_models/hunyuan_video_t2v_720p_bf16.safetensors",
    "/workspace/ComfyUI/models/diffusion_models"
).dl(
    "https://huggingface.co/Comfy-Org/HunyuanVideo_repackaged/blob/main/split_files/text_encoders/clip_l.safetensors",
    "/workspace/ComfyUI/models/text_encoders"
).dl(
    "https://huggingface.co/Comfy-Org/HunyuanVideo_repackaged/blob/main/split_files/text_encoders/llava_llama3_fp8_scaled.safetensors",
    "/workspace/ComfyUI/models/text_encoders"
).dl(
    "https://huggingface.co/Comfy-Org/HunyuanVideo_repackaged/blob/main/split_files/vae/hunyuan_video_vae_bf16.safetensors",
    "/workspace/ComfyUI/models/vae"
).run()