使用Veo3 API和VietVid.com从文本或图像生成AI视频

• •可能需要目标 API 的认证凭证

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        "content": "## STEP 1 - GET API KEY (YOURAPIKEY)\n- Create an account [here](https://vietvid.com/api) and obtain your API key.\n- This key will be required in later steps.\n- Important: Keep your key safe and never share it with others."
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        "content": "## STEP 2 - ENTER PROMPT INFORMATION\nFill out the required fields in the form:\n- **Prompt**: Describe your video idea in English (e.g., \"A robot dancing under neon lights\").\n- **Image URL (optional)**: Add 1 image link (JPG/PNG) for image-to-video, or leave empty for text-to-video.\n- **Aspect Ratio**: Choose 16:9 (landscape), 9:16 (portrait), or 1:1 (square).\n- **Seeds (optional)**: A random number between 10000–99999 for consistent results.\n- **API Key**: Paste the key obtained in Step 1."
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        "content": "## STEP 4 - WAIT FOR VIDEO CREATION\nThe workflow will **automatically check (poll)** every 10 seconds until the video URL is available.\n\n**Status Check**\n- **Method:** GET\n- **URL:** https://vietvid.com/api/n8n/video-status/{{taskId}}\n- **Headers:** Authorization: Bearer {{API_KEY}}\n\n**Expected Response**\n- **videoUrl:** always returns 720p (faster)\n- **hdVideoUrl:** returns 1080p when ready (only for 16:9)\n- **status:** \"processing\" (HD not ready) or \"completed\" (video ready)\n\n**Tips**\n- Use a Wait node (10s delay) between checks.\n- Typical time: 720p ~1–3 min, 1080p ~2–3 min."
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        "content": "## STEP 5 - RECEIVE COMPLETED VIDEO LINK\nWhen status = **completed**, the API will return the video link.\n\n**Response Example**\n```\n{\n  \"success\": true,\n  \"status\": \"completed\",\n  \"videoUrl\": \"https://tempfile.aiquickdraw.com/p/video_720p.mp4\",\n  \"hdVideoUrl\": \"https://tempfile.aiquickdraw.com/p/video_1080p.mp4\",\n  \"resolution\": \"1080p\",\n  \"taskId\": \"task-12345\"\n}\n```\n**Notes**\n- **videoUrl**: always contains 720p.\n- **hdVideoUrl**: only available for 16:9; null for 9:16/1:1.\n- Save these URLs to use in the next workflow step (download, embed, or publish)."
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        "content": "## STEP 3 - SUBMIT REQUEST (AUTO POST)\nThe workflow will automatically **POST** your inputs to VietVid.com to generate the video.\n\n**HTTP Request**\n- **Method:** POST\n- **URL:** https://vietvid.com/api/n8n/generate\n- **Headers:**\n  - Authorization: Bearer {{API_KEY}}\n  - Content-Type: application/json\n\n**Sample Body**\n```\n{\n  \"prompt\": \"A cute cat playing in a garden\",\n  \"model\": \"veo3_fast\",\n  \"aspectRatio\": \"16:9\",\n  \"seeds\": 12345,\n  \"imageUrls\": [\"https://example.com/image.jpg\"]\n}\n```"
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        "content": "## Overview\nThis workflow uses the VietVid.com Veo3 engine to create AI-powered videos from either text prompts or images. Through a simple form, users can provide a description, optionally attach an image URL for image-to-video, and choose the video aspect ratio (16:9 or 9:16). The request is then sent to the VietVid.com API, which is polled until the video is complete, and the final video link is returned. This workflow is a cost-effective solution for creators, educators, and businesses to generate personalized videos quickly and easily.\n\n## Pricing Advantage\n- Videos start at only **$0.4 per 8-second clip**.\n- Billing is based on **credit packages**.\n- **No expiration date** on credits—use them whenever you want.\n\n## Prerequisites\n- A VietVid.com account and valid API key: Register at [VietVid.com](https://vietvid.com) to obtain your free or paid key.\n- An active n8n instance (cloud or self-hosted) with HTTP Request and form submission.\n- Basic knowledge of prompt design for better AI results.\n- (Optional) An image URL if you want to generate videos from images."
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        "content": "## Setup Instructions\n1. **Get API Key**: Log in at VietVid.com and generate your personal API key. Keep it secure.\n2. **Configure the Form**: Ensure the following fields exist: prompt (video description), img_url (optional), aspectRatio (16:9 or 9:16), api_key.\n3. **Run a Test**:\n   - Execute the workflow in n8n.\n   - Open the generated form link, submit your prompt and API key.\n   - The system checks every 10 seconds until the video is ready.\n4. **Outputs**: The final node displays the video URL for download or embedding.\n\n## Customization Tips\n- **Better Prompts**: Add details like video length, visual style (cinematic, animated, realistic), and actions to improve quality.\n- **SEO Focus**: Ideal for keywords around AI video generation, text-to-video tools, Veo3 API automation, and affordable content creation."
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