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89 lines
3.5 KiB
Markdown
89 lines
3.5 KiB
Markdown
# google-video (Google Video)
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This example demonstrates Google Veo video generation models for AI-powered video creation from text prompts.
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You can run this example with:
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```bash
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npx promptfoo@latest init --example google-video
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cd google-video
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```
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## Prerequisites
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Choose one:
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- Google AI Studio / Gemini API key
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- Google Cloud project with Vertex AI API enabled and authentication via `gcloud auth application-default login`
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## Setup
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```bash
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# Option 1: Google AI Studio / Gemini API
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export GOOGLE_API_KEY=your-api-key
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# Option 2: Vertex AI
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gcloud services enable aiplatform.googleapis.com
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gcloud auth application-default login
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export GOOGLE_PROJECT_ID=your-project-id
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```
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## Environment Variables
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- `GOOGLE_API_KEY` - Google AI Studio / Gemini API key
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- `GOOGLE_PROJECT_ID` - Google Cloud project ID for Vertex AI
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## Available Models
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| Model | Description | Duration |
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| -------------------------- | ----------------------------------- | -------- |
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| `veo-3.1-generate-preview` | Latest with video extension support | 4, 6, 8s |
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| `veo-3.1-fast-preview` | Fast Veo 3.1 | 4, 6, 8s |
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| `veo-3-generate` | Veo 3.0 standard | 4, 6, 8s |
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| `veo-3-fast` | Veo 3.0 fast | 4, 6, 8s |
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| `veo-2-generate` | Veo 2.0 | 5, 6, 8s |
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## Running the Example
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```bash
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npx promptfoo@latest eval
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```
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## Configuration Options
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| Option | Type | Description |
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| ------------------ | ------ | --------------------------------------------------------------- |
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| `aspectRatio` | string | `16:9` (default) or `9:16` |
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| `resolution` | string | `720p` (default) or `1080p` |
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| `durationSeconds` | number | Duration: 4, 6, 8 for Veo 3.x; 5, 6, 8 for Veo 2 |
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| `personGeneration` | string | `allow_adult` or `dont_allow` |
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| `negativePrompt` | string | Concepts to avoid |
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| `image` | string | Source image for image-to-video |
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| `lastImage` | string | End frame for interpolation |
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| `extendVideoId` | string | Operation ID from previous Vertex Veo generation (Veo 3.1 only) |
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| `referenceImages` | array | Up to 3 style reference images (file paths or objects) |
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## Features
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### Text-to-Video
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Generate videos from text prompts (see `promptfooconfig.yaml`).
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### Image-to-Video
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Generate videos from a starting image (see `promptfooconfig-image.yaml`).
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### Video Extension (Veo 3.1)
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Extend previously generated Veo videos using the explicit Vertex provider path and an operation ID (see `promptfooconfig-extension.yaml`).
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## Notes
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- Generated videos are stored in promptfoo's blob storage system
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- Videos use content-addressable hashing for automatic deduplication
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- Use `--no-cache` flag to force regeneration
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- Videos are served via the local server for viewing in the UI
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- Veo models use long-running operations with polling for completion
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- `google:video:*` uses Google AI Studio by default and auto-detects Vertex AI when project-based auth is configured
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- Existing project-based `google:video:*` configs remain compatible, but `vertex:video:*` is the recommended explicit path for Vertex-only flows such as `extendVideoId`
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