Video Generate Skill

This skill generates videos using Doubao Seedance 1.0/1.5 models.

Trigger Conditions

1. 1. User wants to generate videos from text descriptions
2. User wants to create videos based on images (first/last frame)
3. User wants to create videos with reference materials (images, videos, audio)
4. User asks for video generation capabilities

Usage

Environment Variables

Before using this skill, ensure the following environment variables are set:

• - ARK_API_KEY or MODEL_VIDEO_API_KEY or MODEL_AGENT_API_KEY: API key for the video generation service
• INLINECODE3: API base URL (optional, has default)
• INLINECODE4: Model name (optional, has default)

Function Signature

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Parameters

params (list[dict])

A list of video generation requests. Each item is a dict with the following fields:

Required per item:

• - video_name (str): Name/identifier of the output video file
• INLINECODE6 (str): Text describing the video to generate. Supports Chinese and English.

Optional per item - Input Materials:

• - first_frame (str): URL for the first frame image
• INLINECODE8 (str): URL for the last frame image
• INLINECODE9 (list[str]): 1-4 reference image URLs for style/content guidance
• INLINECODE10 (list[str]): 0-3 reference video URLs (mp4/mov, 2-15s each, total ≤15s)
• INLINECODE11 (list[str]): 0-3 reference audio URLs (mp3/wav, 2-15s each, total ≤15s)

Optional per item - Video Output Parameters:

• - ratio (str): Aspect ratio. Options: "16:9" (default), "9:16", "4:3", "3:4", "1:1", "2:1", "21:9", "adaptive"
• INLINECODE13 (int): Video length in seconds. Range: 2-12s depending on model
• INLINECODE14 (str): Video resolution. Options: "480p", "720p", "1080p"
• INLINECODE15 (int): Total frame count. Must be in [29, 289] and follow format 25 + 4n
• INLINECODE16 (bool): Lock camera movement. Default: false
• INLINECODE17 (int): Random seed for reproducibility. Range: [-1, 2^32-1]
• INLINECODE18 (bool): Whether to add watermark. Default: false
• INLINECODE19 (bool): Whether to generate audio. Only Seedance 1.5 supports this
• INLINECODE20 (list[dict]): Tool configuration, e.g., INLINECODE21

Input Modes

1. 1. Text-to-Video: Only provide prompt, no images/videos
2. First Frame Guidance: Provide firstframe for starting image
3. First + Last Frame Guidance: Provide both for transition video
4. Reference Images: Provide referenceimages for style/content guidance
5. Multimodal Reference: Combine referenceimages, referencevideos, reference_audios

Return Value

Script Return Info

The video_generate.py script will return these info:

CODEBLOCK1

Based on the script return info, the final response returned to the user consists of a description of the video generation task and the video URL(s). You may download the video from the URL, but the video URL should still be provided to the user for viewing and downloading.

Note: the URL is the 'url' in the success_list of script return info.
The URL must return in two ways:

Final Return Info

You must return three types of information:

1. 1. File format, return both file (if you have some other methods to send the video file) and local path, for example:

1. 2. After generation, present list of video URL in Markdown format, for example:

Code Implementation

See scripts/video_generate.py for the full implementation.

Example Usage

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Command Line Options

Model Fallback

If you encounter a model-related error (like ModelNotOpen), you can downgrade to these models:

• - INLINECODE48
• INLINECODE49

Error Handling

• - IF the script raises the error "PermissionError: ARKAPIKEY or MODELVIDEOAPIKEY or MODELAGENTAPIKEY not found in environment variables", inform the user that they need to provide the ARK_API_KEY or MODEL_VIDEO_API_KEY or MODEL_AGENT_API_KEY environment variable. Write it to the environment variable file in the workspace. If the file already exists, append it to the end. Ensure the environment variable format is correct, make the environment variable effective, and retry the video generation task that just failed.

Notes

• - Keep prompt concise (recommended ≤ 500 characters)
• For first/last frame, ensure aspect ratios match your chosen ratio
• Reference images: 1-4 images, formats: jpeg/png/webp/bmp/tiff/gif
• Reference videos: 0-3 videos, formats: mp4/mov, total duration ≤ 15s
• Reference audios: 0-3 audios, formats: mp3/wav, total duration ≤ 15s
• Multimodal requires at least one image or video (audio-only not supported)
• Audio generation is only supported by Seedance 1.5 pro
• If polling times out, use --query-task with the returned task_id