Reference
API reference
Complete input parameter surface for HappyHorse 1.0. The canonical schema lives at the model's llms.txt; the table below is derived from it.
Endpoint
Submit a job to the queue endpoint:
POST https://queue.fal.run/fal-ai/happyhorse/v1/text-to-videoInput parameters
| Key | Type | Default | Allowed / notes |
|---|---|---|---|
| promptrequired | string | — | Free text describing the output. |
| duration | enum | 5s | 3s | 5s | 8s | 10s |
| resolution | enum | 720p | 256p | 480p | 720p | 1080p |
| aspect_ratio | enum | 16:9 | 16:9 | 9:16 | 1:1 | 21:9 |
| generate_audio | enum | true | true | false |
| language | enum | en | en | zh | ja | ko | de | fr | yue |
Canonical schema: fal.ai/models/fal-ai/happyhorse/v1/text-to-video/llms.txt. Anything new shipped by the model vendor appears there first.
Worked example
Minimal request using the defaults above. Swap the prompt for your own; everything else stays optional.
BASH
1curl -X POST "https://queue.fal.run/fal-ai/happyhorse/v1/text-to-video" \2 -H "Authorization: Key $FAL_KEY" \3 -H "Content-Type: application/json" \4 -d '{"prompt":"Documentary style interview at night. A barista in a rain jacket leans agains...","duration":"5s","resolution":"720p","aspect_ratio":"16:9","generate_audio":true,"language":"en"}'