graph TD A[Start Subagent 5: Video Creation] --> B[Receive Final Lesson Text] B --> C{Need Script Format?} C -->|Yes| D[Generate Voice-Over Script] C -->|No| E[Use Lesson Text As-Is] D --> F[Convert to MP3 Voice-Over] E --> F F --> G[Generate Text Slide Video] G --> H{Add Images?} H -->|Yes| I[Overlay Images on Video] H -->|No| J[Skip Image Overlay] I --> K[Store Module Video] J --> K K --> L{More Modules?} L -->|Yes| B L -->|No| M[Concatenate All Module Videos] M --> N[Output Final Course Video MP4] N --> O[End Subagent 5]