Media Generation

Media Generation

Website Foundation generates images and videos through Cloudflare AI Gateway, proxying requests to fal.ai. No API key is needed in the application code — the gateway handles authentication.

Library Functions

src/lib/media.ts exports two functions:

generateImage(env, prompt, options?)

• Model: Seedream v4.5 (ByteDance)
• Default size: auto_2K (2048x2048)
• Cost: ~$0.04 per image
• Returns: Raw Response from fal.ai with images[].url

generateVideo(env, prompt, options?)

• Model: Seedance 1.5 Pro (ByteDance)
• Defaults: 16:9 aspect ratio, 720p, 5 seconds, with audio
• Cost: ~$0.26 per 5s video
• Returns: Raw Response from fal.ai with video.url

API Routes

Both require Cloudflare Access authentication:

• POST /api/media/generate-image — Accepts { prompt, imageSize? }
• POST /api/media/generate-video — Accepts { prompt, aspectRatio?, resolution?, duration? }

Prompt Tips

• Be specific and descriptive — include subject, setting, lighting, style
• For text in images, Seedream supports rendered text: include The text "..." should appear
• For video, describe action and camera movement; include audio cues for sound generation
• Keep prompts under 500 characters for best results

References

• Seedream API reference — Full input/output schema for image generation
• Seedance API reference — Full input/output schema for video generation