graph TD A[Input: MP4 URL + Timestamps] --> B[Frame Extraction Process] subgraph Frame_Extraction[Frame Extraction Silo] B --> C1[Task #194: Extract 2s Video Segment] C1 --> D1[Task #202: Generate Frame Thumbnail] D1 --> E1[Raw Frame PNG] end subgraph Image_Processing[Image Processing Silo] E1 --> F1[Task #176: GPT Vision Quality Check] F1 --> G1[Task #191: Resize to 1400x1400] G1 --> H1[Processed PNG] end H1 -->|Repeat x6| I[All 6 PNGs Ready] subgraph Batch_Verification[Batch Verification Silo] I --> J[Task #177: Verify Image Set] J --> K[Final Quality Check] K --> L[Verified PNG Set] end L --> M[Output: 6 Verified Tutorial Images] style Frame_Extraction fill:#f9f,stroke:#333 style Image_Processing fill:#bbf,stroke:#333 style Batch_Verification fill:#bfb,stroke:#333