tomevault-io Gemini System — Multimodal File Processing
Gemini CLI is specialized for multimodal file processing (PDF, video, audio, image).
Detailed rules:
.claude/rules/gemini-delegation.mdResearch/codebase analysis: Use general-purpose subagent (Opus) instead — Opus now supports 1M context.
Multimodal File Processing
Extract content from PDF, video, audio, and image files.
# PDF
gemini -p "Extract: {what to extract} @/path/to/file.pdf" 2>/dev/null
# Video
gemini -p "Summarize: key concepts, timestamps @/path/to/video.mp4" 2>/dev/null
# Audio
gemini -p "Transcribe and summarize: decisions, action items @/path/to/audio.mp3" 2>/dev/null
# Image (diagrams, charts)
gemini -p "Analyze: components, relationships, data flow @/path/to/diagram.png" 2>/dev/null
| Target | Extensions |
|---|---|
.pdf |
|
| Video | .mp4, .mov, .avi, .mkv, .webm |
| Audio | .mp3, .wav, .m4a, .flac, .ogg |
| Images (advanced analysis) | .png, .jpg, .jpeg, .gif, .webp, .svg |
Simple screenshot inspection can be done directly with Claude's Read tool.
Auto-Trigger
When multimodal files appear in a task, automatically pass them to Gemini without waiting for user instructions.
When NOT to Use Gemini
| Task | Correct Owner |
|---|---|
| Research and investigation | general-purpose subagent (Opus) |
| Codebase analysis | general-purpose subagent (Opus) |
| Design and planning | Codex |
| Debugging | Codex |
| Code implementation | Claude / Subagents |
How to Use
Subagent Pattern (for large outputs)
Task tool parameters:
- subagent_type: "gemini-explore"
- prompt: |
{task description}
gemini -p "{prompt} @/path/to/file" 2>/dev/null
Return CONCISE summary (5-7 bullet points).
Direct Call (for short extractions)
gemini -p "{what to extract} @/path/to/file" 2>/dev/null
Language Protocol
- Ask Gemini in English
- Receive response in English
- Report to user in the user's language
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