VIDEO-032: Update multimodal.md Documentation

[murdore]

Summary

Create comprehensive multimodal.md documentation for video support covering SDK usage, CLI usage, provider differences, configuration options, and best practices.

Technical Details

• File(s): docs/features/multimodal.md (update existing)
• Section: Video Support (new section)
• Effort: 2h

Acceptance Criteria

• [ ] Video Support section added to multimodal.md
• [ ] SDK usage examples (basic, custom frames, native video)
• [ ] CLI usage examples (all flags)
• [ ] Provider comparison table (Gemini native vs others)
• [ ] Configuration options documented
• [ ] Frame extraction explained with diagrams/examples
• [ ] Audio transcription documented
• [ ] Best practices section
• [ ] Troubleshooting section
• [ ] Performance considerations
• [ ] Token cost estimation guide
• [ ] No typos or formatting errors

Implementation Notes

Document structure:

1. Overview: Video support capabilities
2. Supported Formats: MP4, WebM, MOV, AVI, MKV
3. SDK Usage:
   • Basic video analysis
   • Custom frame extraction
   • Native video (Gemini)
   • Audio transcription
4. CLI Usage: All video flags with examples
5. Provider Comparison:
   • Gemini: Native video, up to 1hr, 2GB
   • Others: Frame extraction, up to 10min, 100MB
6. Configuration Options: frameCount, quality, format, transcribe
7. Best Practices:
   • Frame count selection
   • Quality vs token cost
   • When to use native vs frames
8. Troubleshooting: Common issues and solutions
9. Performance: Token costs, processing time

Dependencies

• Depends on: VIDEO-013, VIDEO-018, VIDEO-019, VIDEO-022
• Blocks: none

Priority: medium Effort: 2h Complexity: simple