POST https://fal.run/fal-ai/veo3.1/extend-video
Endpoint ID: fal-ai/veo3.1/extend-video
Try it in the Playground
Run this model interactively with your own prompts.
Quick Start
Related
- Veo 3.1 — Video Generation
- Veo 3.1 Fast — Video Generation
- Veo3.1 Lite Image to Video — Video Generation
- Veo3.1 Lite FLF — Video Generation
- Veo3.1 Lite Text to Video — Video Generation
Capabilities
- Text prompt input
- Aspect ratio control
- Duration control
- Negative prompts
- Reproducible generation (seed)
- Video input
API Reference
Input Schema
string
required
The text prompt describing how the video should be extended
AspectRatioEnum
default:"auto"
The aspect ratio of the generated video. Default value:
"auto"Possible values: auto, 16:9, 9:16string
default:"7s"
The duration of the generated video. Default value:
"7s"string
A negative prompt to guide the video generation.
string
default:"720p"
The resolution of the generated video. Default value:
"720p"boolean
default:"true"
Whether to generate audio for the video. Default value:
trueinteger
The seed for the random number generator.
boolean
default:"false"
Whether to automatically attempt to fix prompts that fail content policy or other validation checks by rewriting them.
SafetyToleranceEnum
default:"4"
The safety tolerance level for content moderation. 1 is the most strict (blocks most content), 6 is the least strict. Default value:
"4"Possible values: 1, 2, 3, 4, 5, 6string
required
URL of the video to extend. The video should be 720p or 1080p resolution in 16:9 or 9:16 aspect ratio.
Output Schema
File
required
The extended video.
Input Example
Output Example
Limitations
aspect_ratiorestricted to:auto,16:9,9:16safety_tolerancerestricted to:1,2,3,4,5,6