# Mk:multimodal > Process images, video, audio, PDFs with Gemini API. Generate images (Nano Banana 2), videos (Veo 3), speech (MiniMax TTS), music (MiniMax). Convert documents to Markdown. Multi-provider fallback (Gemini → MiniMax → OpenRouter). Activate when task references media files, asks to analyze/describe/transcribe/extract/generate/convert, or involves non-text binary files. - Skill: `ngocsangyem/mk-multimodal` (Agent Skill, multi-file: 33 files) - Install (CLI): `npx skillmds@latest add ngocsangyem/mk-multimodal` - Raw SKILL.md: https://api.skillmd.com/api/skills/ngocsangyem/mk-multimodal/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Docs & Writing - Author: ngocsangyem (https://skillmd.com/u/ngocsangyem) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/ngocsangyem/mk-multimodal --- # Multimodal Analysis & Generation > **Path convention:** Commands below assume cwd is `$CLAUDE_PROJECT_DIR` (project root). Prefix paths with `"$CLAUDE_PROJECT_DIR/"` when invoking from subdirectories. ## Model selection and commands Use the configured analysis default for media understanding. Generation routes Gemini → MiniMax → OpenRouter as keys permit. Provider model IDs, preview availability, and pricing change frequently: load [references/models-and-pricing.md](references/models-and-pricing.md) at execution time and verify preview IDs against the provider dashboard before relying on one. | Task | Script | |---|---| | Analyze, transcribe, extract | `scripts/gemini_analyze.py` | | Generate image or video with routing | `scripts/gemini_generate.py` | | Generate MiniMax image, video, speech, music | `scripts/minimax_generate.py` | | Convert document to Markdown | `scripts/document_converter.py` | | Validate keys and dependencies | `scripts/check_setup.py` | ```bash .claude/skills/.venv/bin/python3 .claude/skills/multimodal/scripts/gemini_analyze.py \ --files --task [--resolution low-res] [--json] ``` ## References Load **only when executing** the corresponding step. | Reference | When to load | Content | | ------------------------------------------------------------------- | ------------------------- | ---------------------------------- | | **[vision-understanding.md](./references/vision-understanding.md)** | Image analysis | Detection, segmentation, OCR | | **[audio-processing.md](./references/audio-processing.md)** | Audio/video transcription | Formats, splitting, timestamps | | **[models-and-pricing.md](./references/models-and-pricing.md)** | Model selection, cost | Full model table, pricing | | **[image-generation.md](./references/image-generation.md)** | Image generation | Nano Banana 2, OpenRouter fallback | | **[video-generation.md](./references/video-generation.md)** | Video generation | Veo 3.1, async polling | | **[video-analysis.md](./references/video-analysis.md)** | Video analysis | Resolution modes, cost math | | **[minimax-generation.md](./references/minimax-generation.md)** | MiniMax generation | Image, video, TTS, music | | **[document-conversion.md](./references/document-conversion.md)** | Document conversion | Formats, batch mode | ## When to Use **Auto-activate on these patterns:** - Task references image (.png, .jpg, .webp), video (.mp4, .mov), audio (.mp3, .wav), or document (.pdf, .docx) files - Task asks to "analyze", "describe", "transcribe", "extract", "OCR" - Task asks to "generate image", "generate video", "create image" - Task asks to "generate speech", "text to speech", "TTS" - Task asks to "generate music", "create music" - Task asks to "convert document", "convert PDF to markdown" - User references a non-text binary file for processing **Do NOT invoke when:** text-only files (use Read), Gemini API docs (use mk:docs-finder), already-described image in context. ## API key check Use `MEOWKIT_GEMINI_API_KEY` (or legacy `GEMINI_API_KEY`); without it, generation may use `MEOWKIT_MINIMAX_API_KEY`. If neither is present, stop with setup instructions. ## Analysis Process Detect media format → select model (default: gemini-2.5-flash) → run script. For >20MB files, use File API. Use `--resolution low-res` for video (62% savings, video only). Output capped at ~3000 tokens; prefer structured JSON/Markdown. ## Generation Process Provider router auto-selects best available provider by checking API keys: - **Image:** Gemini → MiniMax → OpenRouter - **Video:** Gemini → MiniMax - **TTS:** MiniMax only - **Music:** MiniMax only Force a provider: `--provider gemini|minimax|openrouter`. Override chain order via `MEOWKIT_IMAGE_PROVIDER_CHAIN` etc. ## Gotchas - **Python venv required**: if you get `python3: command not found` or import errors, run `.claude/scripts/bin/setup-workflow` once from the project root. - **Audio >15 min**: Gemini truncates silently. Split first. - **PDF >100 pages**: Quality degrades. Process in 20-page chunks. - **Video cost**: ~263 tokens/sec at default resolution. Use `--verbose` for cost estimate. - **Image gen requires billing**: Free tier = no gen. Use MiniMax/OpenRouter as fallback. - **MiniMax video timeout**: Hailuo takes 60-180s. Max 600s. - **TTS voices**: load the provider catalog at execution time; voice inventories change. - **Temperature**: Keep Gemini at 1.0. Lowering causes degraded output. ## Failure Handling - **Missing API key** → STOP + setup instructions - **Invalid key (401)** → STOP + re-check key - **Rate limit (429)** → key rotation (`MEOWKIT_GEMINI_API_KEY_2/3/4`), else wait 60s - **Billing required** → provider router tries MiniMax/OpenRouter fallback ## Setup Set `MEOWKIT_GEMINI_API_KEY` in env or `.env` file. Legacy `GEMINI_API_KEY` also works. Optional: `MEOWKIT_MINIMAX_API_KEY` for TTS/music and alternative generation. **Budget rule:** ≤3000 tokens inline. If response exceeds budget, summarize key findings before returning.