1. Workflow Overview

• Purpose:
  Named "Crystal Cutting", this workflow generates dynamic videos of transparent crystal objects being cut. Key features:

  • Static Image Generation: Creates high-transparency crystal objects (e.g., watermelon, cherry) via Stable Diffusion.

  • Video Animation: Uses WanVideo nodes to animate cutting actions (e.g., knife slicing crystal watermelon).

  • Style Control: LoRAs (e.g., Glass&Crystal Fruits-F1_V1) enhance material realism.

2. Key Components

Critical Nodes:

1. WanVideoModelLoader:

   • Loads video model (Wan2_1-I2V-14B-480P_fp8_e4m3fn.safetensors).

   • Plugin: ComfyUI-WanVideoWrapper.

2. WanVideoTextEncode:

   • Inputs cutting prompts (e.g., "A knife cutting a transparent crystal watermelon").

   • Negative prompts avoid artifacts (e.g., "blurry, low quality").

3. WanVideoImageClipEncode:

   • Encodes static images into video latent frames (resolution 832x832, 49 frames).

4. WanVideoSampler:

   • Sampler: unipc, 6 steps.

5. VHS_VideoCombine:

   • Outputs MP4 video (16fps, CRF=19).

Dependencies:

• LoRA Models:

  • CakeCutting(WanVideo2.1 I2V LoRA)_V1: Must be placed in models/loras/.

• Plugins:

  • ComfyUI-VideoHelperSuite: For video synthesis.

  • ComfyUI-WanVideoWrapper: Install manually via GitHub.

3. Workflow Structure

Groups:

1. Static Image Generation:

   • Uses KSampler to generate crystal objects (resolution 768x1024, fixed seed).

   • LoRA (Glass&Crystal Fruits-F1_V1) enhances textures.

2. Video Animation:

   • WanVideoImageClipEncode converts images to video frames.

   • WanVideoSampler controls cutting motion smoothness.

3. Post-Processing:

   • VHS_VideoCombine renders final video (with metadata).

4. Inputs & Outputs

• Inputs:

  • Image: Static crystal object (e.g., jimeng-2025-06-19-5212.png).

  • Text: Bilingual prompts (e.g., "Transparent crystal watermelon + cutting action").

  • Params: Resolution 832x832, FPS 16.

• Output:

  • MP4 video (e.g., WanVideo2_1_T2V.mp4).

5. Tips & Warnings

• VRAM: ≥12GB GPU recommended for video generation.

• Paths: Verify LoRA/model file paths.

• Frame Limit: High frames (e.g., 49) may slow generation; test with 24 frames first.