{
  "name": "AI Background Generation with Nano Banana (Gemini Image)",
  "nodes": [
    {
      "parameters": {
        "content": "## 🎨 AI Background Generation\n\n**What it does:**\n- Generates custom background image from text prompt\n- Uses Gemini's Nano Banana (native image generation)\n- Removes foreground video background\n- Composites video on AI-generated background\n- Saves final result to Google Drive\n\n**Perfect for:**\n- Creating custom scenes from imagination\n- Marketing videos with branded environments\n- Product demos with tailored backgrounds\n- Social media content with unique visuals\n- AI avatars in AI-generated worlds\n\n**Processing time:** 2-4 minutes per video\n- Image generation: ~10-20 seconds\n- Background removal: ~20-60 seconds\n- Composition: ~30-60 seconds\n\n**Setup:** ~5 minutes (2 API keys)\n\n[📖 Full Documentation](https://docs.videobgremover.com/)",
        "height": 580,
        "width": 520
      },
      "id": "c7388890-0c23-4122-bd5d-252650bc1bcc",
      "name": "📋 Overview",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -3360,
        -144
      ],
      "notesTextSize": "large",
      "notesBackgroundColor": 4
    },
    {
      "parameters": {
        "content": "## 🔑 API Keys Setup (Required)\n\n**Step 1: Gemini API Key**\n- Visit: https://aistudio.google.com/apikey\n- Create new API key\n- Add to n8n: Settings → Variables\n  - Name: `GEMINI_KEY`\n  - Value: your Gemini API key\n\n**Step 2: VideoBGRemover API Key**\n- Visit: https://videobgremover.com/api-management\n- Sign up (free tier available)\n- Copy your API key\n- Add to n8n: Settings → Variables\n  - Name: `VIDEOBGREMOVER_KEY`\n  - Value: your API key\n\n✅ This workflow uses `$vars.GEMINI_KEY` and `$vars.VIDEOBGREMOVER_KEY` (secure)\n\n**Pricing:**\n- Gemini: $0.03 per image (~1024x1024)\n- VideoBGRemover: $0.50-$2.00 per min",
        "height": 380,
        "width": 380
      },
      "id": "4cea6533-3c98-4416-9590-55d59fa384c1",
      "name": "🔑 API Key Setup",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -2784,
        -160
      ]
    },
    {
      "parameters": {
        "content": "## 📥 Input Required\n\n**video_url** (required)\n- URL to your foreground video\n- AI actors, product demos, talking heads\n- Any resolution up to 4K\n- Must be publicly accessible\n\n**background_prompt** (required)\n- Text description of desired background\n- Be descriptive and specific\n- Example: \"A modern minimalist office with floor-to-ceiling windows overlooking a city skyline at sunset\"\n\n**aspect_ratio** (optional)\n- Default: \"1:1\" (square)\n- Landscape: \"16:9\", \"4:3\"\n- Portrait: \"9:16\", \"3:4\"\n- Full list: https://ai.google.dev/gemini-api/docs/image-generation#aspect_ratios\n\n⚠️ Video must be **publicly accessible URL**",
        "height": 320,
        "width": 380
      },
      "id": "e78fbba9-30f1-4195-b186-7b0e1089592f",
      "name": "📥 Inputs",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -2240,
        -144
      ]
    },
    {
      "parameters": {
        "content": "## 🎨 Nano Banana (Gemini Image)\n\n**How it works:**\n- Uses Gemini 2.5 Flash with native image generation\n- Generates high-quality backgrounds from text\n- Supports detailed, photorealistic prompts\n- Built-in SynthID watermarking\n\n**Prompt tips:**\n- Be descriptive and specific\n- Mention lighting, colors, mood\n- Use photography terms for realism\n- Describe the scene, not just keywords\n\n**Examples:**\n- \"A cozy coffee shop interior with warm lighting and vintage decor\"\n- \"Modern tech office with glass walls and city views\"\n- \"Tropical beach at golden hour with palm trees\"\n\n**Output:** Base64-encoded PNG image\n**Latency:** ~10-20 seconds per image",
        "height": 380,
        "width": 380
      },
      "id": "0c554823-6fe3-4ab1-8ff8-ae6ea3d6e369",
      "name": "🎨 Nano Banana",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -1680,
        -144
      ]
    },
    {
      "parameters": {
        "content": "## 🔄 Processing Flow\n\n**1. Generate Background** (~10-20s)\n- Gemini creates image from prompt\n- Returns base64-encoded PNG\n- Supports multiple aspect ratios\n\n**2. Background Removal** (~20-60s)\n- VideoBGRemover processes video\n- AI-powered segmentation\n- Clean edge detection\n\n**3. Composition** (~30-60s)\n- Composite video on AI background\n- Centered template (maintain aspect)\n- Professional framing\n\n**4. Upload to Drive**\n- Automatic save with shareable link\n- Permanent storage\n\n⏱️ Total: 2-4 min per video",
        "height": 320,
        "width": 380
      },
      "id": "c644eeb5-59d2-4423-8ae4-78843e8c17b6",
      "name": "🔄 Processing",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -1120,
        -144
      ]
    },
    {
      "parameters": {
        "content": "## 💾 Google Drive Setup\n\n**Step 1:** Connect Google Drive\n- Click \"Upload to Google Drive\" node\n- Click \"Connect\"\n- Authorize n8n\n\n**Step 2:** Choose folder (optional)\n- Default: Root of \"My Drive\"\n- Or select specific folder\n\n**Output:**\n- Permanent shareable link\n- Direct download URL\n- File metadata\n\n⏱️ Setup time: ~2 minutes",
        "height": 280,
        "width": 380
      },
      "id": "6cf6aa8c-213e-454b-acc4-86c8331cbb25",
      "name": "💾 Google Drive",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -560,
        -144
      ]
    },
    {
      "parameters": {
        "content": "## 🚀 How to Use\n\n**Manual testing:**\n1. Update inputs in \"Sample Inputs (manual)\"\n   - `video_url`: Your video URL\n   - `background_prompt`: Describe background\n   - `aspect_ratio`: Optional (default 1:1)\n2. Click \"Execute Workflow\"\n3. Wait 2-4 minutes for processing\n4. Check Google Drive for result\n\n**Webhook automation:**\n1. Activate workflow\n2. Copy webhook URL\n3. POST to webhook:\n```json\n{\n  \"video_url\": \"https://...\",\n  \"background_prompt\": \"A modern office...\",\n  \"aspect_ratio\": \"16:9\"\n}\n```\n\n**Batch processing:** Connect to Google Sheets or Airtable for bulk automation",
        "height": 380,
        "width": 380
      },
      "id": "6961e968-3b00-468d-8109-f9ce3c2ebaa4",
      "name": "🚀 Usage",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        16,
        -144
      ]
    },
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "ai-background-gen",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "827a2d53-0d00-492c-b2d4-095bf01a9dc2",
      "name": "Webhook Trigger",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1.1,
      "position": [
        -2800,
        272
      ],
      "webhookId": "ai-background-gen"
    },
    {
      "parameters": {},
      "id": "d0af9917-1f4f-4357-bf89-2ab33bdc329c",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        -2800,
        432
      ]
    },
    {
      "parameters": {
        "content": "## 🎨 GEMINI AI IMAGE GENERATION SECTION\nGenerates custom background image from text prompt using Nano Banana → Returns base64 PNG",
        "height": 100,
        "width": 900
      },
      "id": "525d4ab1-81c3-4194-8428-8eba04186dbb",
      "name": "Section: Gemini",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -2368,
        512
      ],
      "notesBackgroundColor": 5
    },
    {
      "parameters": {
        "content": "## 📸 Example: Input\n\n![AI Actor](https://videos.videobgremover.com/public-assets/template-04-assets/01-foreground-ai-actor.jpg)\n\n**1. Foreground Video**\n*AI avatar speaking*\n\n**Prompt:**\n\"Modern office with city skyline at golden hour\"\n\n**Aspect ratio:** 16:9\n\n**Full video:**\nhttps://videos.videobgremover.com/public-videos/assets/ai-actor.mp4",
        "height": 748,
        "width": 416
      },
      "id": "2619d740-a101-489c-b2a0-0b6bcd3371e5",
      "name": "📸 Input",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -3360,
        704
      ],
      "notesBackgroundColor": 4
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "name": "video_url",
              "value": "={{ $json.body?.video_url ?? $json.video_url }}",
              "type": "string"
            },
            {
              "name": "background_prompt",
              "value": "={{ $json.body?.background_prompt ?? $json.background_prompt }}",
              "type": "string"
            },
            {
              "name": "aspect_ratio",
              "value": "={{ $json.body?.aspect_ratio ?? $json.aspect_ratio ?? '1:1' }}",
              "type": "string"
            },
            {
              "name": "source",
              "value": "webhook",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "id": "0e05ad57-00a1-48f6-8a2a-15583cd04750",
      "name": "Extract Webhook Data",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.3,
      "position": [
        -2640,
        272
      ]
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "name": "video_url",
              "value": "https://videos.videobgremover.com/public-videos/assets/ai-actor.mp4",
              "type": "string"
            },
            {
              "name": "background_prompt",
              "value": "A modern minimalist office with floor-to-ceiling windows overlooking a vibrant city skyline at golden hour. Warm sunlight streams through the glass, casting soft shadows on a polished concrete floor. In the background, sleek wooden desks and green plants create a professional yet inviting atmosphere. The lighting is natural and diffused, creating a calm, productive mood. Photorealistic, architectural photography style.",
              "type": "string"
            },
            {
              "name": "aspect_ratio",
              "value": "16:9",
              "type": "string"
            },
            {
              "name": "source",
              "value": "manual",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "id": "e1149727-5f4b-4d18-93c8-2607c069b2f4",
      "name": "Sample Inputs (Edit Here)",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.3,
      "position": [
        -2640,
        432
      ]
    },
    {
      "parameters": {
        "mode": "append"
      },
      "id": "65c2e215-a254-4514-a5bd-c36bd6d344ca",
      "name": "Merge Triggers",
      "type": "n8n-nodes-base.merge",
      "typeVersion": 2.1,
      "position": [
        -2480,
        352
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-image:generateContent",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "x-goog-api-key",
              "value": "={{ $vars.GEMINI_KEY }}"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={\n  \"contents\": [{\n    \"parts\": [\n      {\"text\": \"{{ $json.background_prompt }}\"}\n    ]\n  }],\n  \"generationConfig\": {\n    \"responseModalities\": [\"Image\"],\n    \"imageConfig\": {\n      \"aspectRatio\": \"{{ $json.aspect_ratio }}\"\n    }\n  }\n}",
        "options": {
          "response": {
            "response": {
              "neverError": true,
              "responseFormat": "json"
            }
          }
        }
      },
      "id": "6483a5c1-fd4e-42ee-8ad8-219aded66c30",
      "name": "1. Generate Background Image (Gemini)",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        -2320,
        352
      ]
    },
    {
      "parameters": {
        "jsCode": "// Extract base64 image from Gemini response\nconst imageData = $input.item.json.candidates[0].content.parts[0].inlineData.data;\nconst mimeType = $input.item.json.candidates[0].content.parts[0].inlineData.mimeType;\n\n// Convert base64 to binary for temporary storage\nconst buffer = Buffer.from(imageData, 'base64');\n\n// Create a data URL for VideoBGRemover API\nconst dataUrl = `data:${mimeType};base64,${imageData}`;\n\nreturn {\n  json: {\n    background_image_data: imageData,\n    background_image_mime: mimeType,\n    background_image_url: dataUrl\n  },\n  binary: {\n    data: {\n      data: buffer,\n      mimeType: mimeType,\n      fileName: 'generated_background.png'\n    }\n  }\n};"
      },
      "id": "157c8a70-af96-4353-9fe8-8104d1f2073e",
      "name": "Extract Image Data",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -2080,
        352
      ]
    },
    {
      "parameters": {
        "name": "=ai_bg_{{ $('Merge Triggers').item.json.background_prompt.substring(0, 30).replace(/[^a-zA-Z0-9]/g, '_') }}_{{ new Date().getTime() }}.png",
        "driveId": {
          "__rl": true,
          "mode": "list",
          "value": "My Drive"
        },
        "folderId": {
          "__rl": true,
          "mode": "list",
          "value": "root"
        },
        "options": {
          "simplifyOutput": true
        }
      },
      "id": "0ba0480a-ace4-447e-8698-1dc854205011",
      "name": "2. Save Background Image to Drive",
      "type": "n8n-nodes-base.googleDrive",
      "typeVersion": 3,
      "position": [
        -1840,
        352
      ]
    },
    {
      "parameters": {
        "operation": "share",
        "fileId": "={{ $json.id }}",
        "permissionsUi": {
          "permissionsValues": {
            "role": "reader",
            "type": "anyone"
          }
        },
        "options": {}
      },
      "id": "68810993-3dbf-4f53-a27c-a461653f8f7f",
      "name": "3. Make Background Image Public",
      "type": "n8n-nodes-base.googleDrive",
      "typeVersion": 3,
      "position": [
        -1600,
        352
      ]
    },
    {
      "parameters": {
        "content": "## 📸 Example: Generated\n\n![Generated Background](https://videos.videobgremover.com/public-assets/template-04-assets/02-generated-background-nano-banana.png)\n\n**2. Nano Banana Output**\n*AI-generated office background*\n\n**Details:**\n- Model: Gemini 2.5 Flash\n- Aspect ratio: 16:9\n- Resolution: ~1536x864px\n- Time: ~10-15 seconds\n- PNG with SynthID\n\n**Saved to Drive & made public**",
        "height": 700,
        "width": 432
      },
      "id": "2dd106d4-9f8e-4a22-8da7-c5f245fbf0f5",
      "name": "📸 Generated",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -2800,
        704
      ],
      "notesBackgroundColor": 6
    },
    {
      "parameters": {
        "content": "## 🎬 VIDEOBGREMOVER COMPOSITION SECTION\nRemoves foreground video background → Composites on AI-generated image → Centered template",
        "height": 100,
        "width": 1020
      },
      "id": "6bcc43e4-4de5-4c73-9dba-610e91d0a23f",
      "name": "Section: VideoBGRemover",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -1360,
        512
      ],
      "notesBackgroundColor": 2
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://api.videobgremover.com/api/v1/jobs",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "X-API-Key",
              "value": "={{ $vars.VIDEOBGREMOVER_KEY }}"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={ \"video_url\": \"{{ $('Merge Triggers').item.json.video_url }}\" }",
        "options": {
          "response": {
            "response": {
              "neverError": true,
              "responseFormat": "json"
            }
          }
        }
      },
      "id": "639e12d4-7275-4353-9bbd-5a4a62138ada",
      "name": "4. Create Job (Upload Video)",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        -1360,
        592
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "=https://api.videobgremover.com/api/v1/jobs/{{ $json.id }}/start",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "X-API-Key",
              "value": "={{ $vars.VIDEOBGREMOVER_KEY }}"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={\n  \"background\": {\n    \"type\": \"composition\",\n    \"composition\": {\n      \"template\": \"centered\",\n      \"background_type\": \"image\",\n      \"background_url\": \"https://drive.google.com/uc?id={{ $('2. Save Background Image to Drive').item.json.id }}\",\n      \"export_format\": \"h264\",\n      \"export_preset\": \"medium\"\n    }\n  }\n}",
        "options": {
          "response": {
            "response": {
              "neverError": true,
              "responseFormat": "json"
            }
          }
        }
      },
      "id": "aef3cf73-31dc-429e-9f61-083338ca1520",
      "name": "5. Start Composition (AI Background)",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        -1120,
        592
      ]
    },
    {
      "parameters": {
        "url": "=https://api.videobgremover.com/api/v1/jobs/{{ $('4. Create Job (Upload Video)').item.json.id }}/status",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "X-API-Key",
              "value": "={{ $vars.VIDEOBGREMOVER_KEY }}"
            }
          ]
        },
        "options": {
          "response": {
            "response": {
              "neverError": true,
              "responseFormat": "json"
            }
          }
        }
      },
      "id": "e3a43a09-01ad-4618-ba17-b16429bfe3b4",
      "name": "6. Check Job Status",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        -880,
        592
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict"
          },
          "conditions": [
            {
              "id": "is_completed_condition",
              "leftValue": "={{ $json.status }}",
              "rightValue": "completed",
              "operator": {
                "type": "string",
                "operation": "equals"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "249577e0-7159-4945-92fd-ad3a7bfbb9a1",
      "name": "Is Complete?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [
        -640,
        592
      ]
    },
    {
      "parameters": {
        "content": "## 💾 OUTPUT SECTION\nDownload final video → Upload to Google Drive → Return response",
        "height": 100,
        "width": 840
      },
      "id": "b0b6b36f-284c-446e-894b-1bacfae40264",
      "name": "Section: Output",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -400,
        512
      ],
      "notesBackgroundColor": 3
    },
    {
      "parameters": {
        "url": "={{ $json.processed_video_url }}",
        "options": {
          "response": {
            "response": {
              "responseFormat": "file"
            }
          }
        }
      },
      "id": "4acc452e-2286-4db8-92b0-799fda21f6de",
      "name": "7. Download Video",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        -400,
        752
      ]
    },
    {
      "parameters": {
        "name": "=ai_bg_video_{{ $('4. Create Job (Upload Video)').item.json.id }}_{{ new Date().getTime() }}.mp4",
        "driveId": {
          "__rl": true,
          "mode": "list",
          "value": "My Drive"
        },
        "folderId": {
          "__rl": true,
          "mode": "list",
          "value": "root"
        },
        "options": {
          "simplifyOutput": true
        }
      },
      "id": "432d20ce-1e25-400c-86a7-789e8447c323",
      "name": "8. Upload Video to Drive",
      "type": "n8n-nodes-base.googleDrive",
      "typeVersion": 3,
      "position": [
        -160,
        752
      ]
    },
    {
      "parameters": {
        "content": "## 📸 Example: Final\n\n![Final Result](https://videos.videobgremover.com/public-assets/template-04-assets/03-final-composed-result.jpg)\n\n**3. Composed Video**\n*AI actor on AI background*\n\n**Details:**\n- Template: Centered\n- Background removed\n- Aspect ratio preserved\n- Professional framing\n\n**Full video:**\nhttps://videos.videobgremover.com/public-assets/template-04-assets/final-result.mp4\n\n**Saved to Google Drive**",
        "height": 676,
        "width": 320
      },
      "id": "ac59da0a-0526-4f25-ab9c-fe42a3a353d1",
      "name": "📸 Final",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -2240,
        704
      ],
      "notesBackgroundColor": 4
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "name": "final_result",
              "type": "object",
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