<h2 id="overview">🎬 Overview</h2>This custom ComfyUI node transforms prompt generation into a full cinematic directing system powered by Gemma 4.Instead of writing basic prompts, this node acts as an AI Director, automatically generating:<ul><li>Structured cinematic prompts (LTX 2.3 optimized)</li><li>Timeline-based scenes (perfect for video generation)</li><li>Camera direction, environment, subject behavior</li><li>Sound design layers</li><li>Genre-aware trailer logic (Netflix-style)</li></ul>Whether you're creating short cinematic clips or full 20-second trailers, this node handles everything — from concept to final prompt.<hr /><h2 id="key-features">🚀 Key Features</h2><h3 id="structured-cinematic-prompts">🎥 Structured Cinematic Prompts</h3><ul><li>Clean sections:<ul><li><code>[Camera]</code></li><li><code>[Environment]</code></li><li><code>[Subject]</code></li><li><code>[Timeline]</code></li><li><code>[Sound]</code></li></ul></li><li>Optimized for LTX 2.3 video generation</li></ul><hr /><h3 id="auto-director-system">🎬 Auto Director System</h3>Fully automatic scene creation with multiple modes:<ul><li>Smart Auto → balanced, high-quality results</li><li>Full Auto → complete scene generation</li><li>Chaos Auto → maximum creativity &amp; variation</li></ul>Generates automatically:<ul><li>subjects &amp; relationships</li><li>environments</li><li>camera style</li><li>actions &amp; motion</li><li>sound design</li></ul><hr /><h3 id="subject-control">🎭 Subject Control</h3>Choose or randomize:<ul><li>Female subject</li><li>Male subject</li><li>Hetero couple</li><li>Lesbian couple</li><li>Or let AI decide</li></ul><hr /><h3 id="expanded-environment-database">🌍 Expanded Environment Database</h3>Massive internal preset library:<ul><li>Cinematic interiors</li><li>Urban &amp; nightlife scenes</li><li>Nature &amp; fantasy environments</li><li>Horror &amp; liminal spaces</li><li>Action &amp; disaster setups</li></ul>Auto-selected or manually controlled.<hr /><h3 id="netflix-style-trailer-mode-(new)">🎬 Netflix-Style Trailer Mode (NEW)</h3>Generate full 20-second cinematic trailers with:<ul><li>5 structured timeline beats</li><li>Genre-based pacing</li><li>Dynamic camera progression</li><li>Sound design adapted to genre</li><li>Final hook shot</li></ul>Supported Genres:<ul><li>Psychological Horror</li><li>Sci-Fi Thriller</li><li>Action Spectacle</li><li>Dark Fantasy</li><li>Romantic Drama</li><li>Crime / Mystery</li><li>Dystopian / Survival</li><li>And many more</li></ul><hr /><h3 id="style-presets">⚙️ Style Presets</h3>Structured modes include:<ul><li>Structured Romance</li><li>Structured Power</li><li>Structured Action</li><li>Structured Horror</li><li>Structured Dreamlike</li><li>Structured Realism</li><li>Structured POV</li><li>Structured Epic</li><li>Structured Minimal</li></ul><hr /><h2 id="why-this-node">🧠 Why This Node?</h2>This is not just a prompt generator.It is a:👉 Cinematic Prompt Engine 👉 AI Scene Director 👉 Video Pre-Production ToolDesigned specifically for:<ul><li>LTX 2.3 workflows</li><li>Text-to-video pipelines</li><li>High-end cinematic AI generation</li></ul><hr /><h2 id="installation-guide-(step-by-step)">🛠 Installation Guide (Step-by-Step)</h2><h3 id="1.-download-the-node">1. Download the Node</h3>Download the file:<pre><code>gemma4_prompt_gen.py</code></pre><hr /><h3 id="2.-place-the-file">2. Place the File</h3>Move it into:<pre><code>ComfyUI/custom_nodes/Gemma4Prompt/</code></pre>If the folder doesn’t exist, create it manually.<hr /><h3 id="3.-verify-structure">3. Verify Structure</h3>Your folder should look like:<pre><code>ComfyUI/
 └── custom_nodes/
 └── Gemma4Prompt/
 ├── __init__.py
 └── gemma4_prompt_gen.py</code></pre>⚠️ Do NOT rename <code>__init__.py</code> ⚠️ File name must be exactly: <code>gemma4_prompt_gen.py</code><hr /><h3 id="4.-install-dependencies">4. Install Dependencies</h3>Make sure you have:<ul><li>Python 3.10+</li><li>CUDA working (for GPU inference)</li><li>llama.cpp build with CUDA support</li></ul><hr /><h3 id="5.-setup-llama-server">5. Setup llama-server</h3>Download a CUDA-enabled build and run:<pre><code>llama-server.exe -m YOUR_MODEL.gguf -ngl 60 --ctx-size 4096</code></pre>Make sure it's running on:<pre><code>http://127.0.0.1:8080</code></pre><hr /><h3 id="6.-restart-comfyui">6. Restart ComfyUI</h3>Launch ComfyUI again and check:<ul><li>Node appears as Gemma4PromptGen</li><li>No errors in console</li></ul><hr /><h3 id="7.-load-workflow">7. Load Workflow</h3>Use your existing workflow or connect:<ul><li>Instruction input</li><li>Optional environment / subject</li><li>Output prompt → LTX pipeline</li></ul><hr /><h2 id="recommended-settings">⚡ Recommended Settings</h2><h3 id="cinematic-clip">🎬 Cinematic Clip</h3><ul><li>Mode: <code>AUTO</code></li><li>Style: <code>Structured</code></li><li>Auto Director: <code>Smart Auto</code></li></ul><hr /><h3 id="netflix-trailer">🎥 Netflix Trailer</h3><ul><li>Style: <code>Trailer</code></li><li>Genre: <code>Psychological Horror</code> (example)</li><li>Intensity: <code>Balanced</code> or <code>High Impact</code></li><li>Sound: <code>Auto by Genre</code></li></ul><hr /><h3 id="full-automatic-generation">🔥 Full Automatic Generation</h3><ul><li>Auto Director: <code>Full Auto</code></li><li>Subject: <code>Off</code></li><li>Environment: <code>LLM decides</code></li></ul><hr /><h2 id="final-notes">💡 Final Notes</h2><ul><li>Higher token limits = longer, richer prompts</li><li>Structured mode is best for LTX</li><li>Trailer mode is ideal for storytelling</li></ul><hr /><h2 id="result">🎯 Result</h2>With this node, you move from:❌ basic prompts ➡️ to 🔥 AI-directed cinematic storytelling<hr />If you like it, drop a like ⭐ and share your generations — I’d love to see what you create!

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