Bytedance Seedance V1 Pro Text To Video API

API reference for Bytedance Seedance V1 Pro Text To Video. Seedance 1.0 Pro, a high quality video generation model developed by Bytedance.

Endpoint: POST https://fal.run/fal-ai/bytedance/seedance/v1/pro/text-to-video Endpoint ID: fal-ai/bytedance/seedance/v1/pro/text-to-video

Try it in the Playground

Run this model interactively with your own prompts.

Quick Start

Python

import fal_client

def on_queue_update(update):
    if isinstance(update, fal_client.InProgress):
        for log in update.logs:
           print(log["message"])

result = fal_client.subscribe(
    "fal-ai/bytedance/seedance/v1/pro/text-to-video",
    arguments={
        "prompt": "A bright blue race car speeds along a snowy racetrack. [Low-angle shot] Captures several cars speeding along the racetrack through a harsh snowstorm. [Overhead shot] The camera gradually pulls upward, revealing the full race scene illuminated by storm lights"
    },
    with_logs=True,
    on_queue_update=on_queue_update,
)
print(result)

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("fal-ai/bytedance/seedance/v1/pro/text-to-video", {
  input: {
      prompt: "A bright blue race car speeds along a snowy racetrack. [Low-angle shot] Captures several cars speeding along the racetrack through a harsh snowstorm. [Overhead shot] The camera gradually pulls upward, revealing the full race scene illuminated by storm lights"
    },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

curl --request POST \
  --url https://fal.run/fal-ai/bytedance/seedance/v1/pro/text-to-video \
  --header "Authorization: Key $FAL_KEY" \
  --header "Content-Type: application/json" \
  --data '{
  "prompt": "A bright blue race car speeds along a snowy racetrack. [Low-angle shot] Captures several cars speeding along the racetrack through a harsh snowstorm. [Overhead shot] The camera gradually pulls upward, revealing the full race scene illuminated by storm lights"
}'

Related

• Seedance 1.0 Pro — Video Generation
• Seedance 1.0 Lite — Video Generation
• Bytedance — Video Generation

Capabilities

• Text prompt input
• Aspect ratio control
• Duration control
• Reproducible generation (seed)
• Safety checker
• Frame count control

API Reference

Input Schema

prompt · string · required

The text prompt used to generate the video

aspect_ratio · AspectRatioEnum · default: "16:9"

The aspect ratio of the generated video Default value: "16:9"

Possible values: 21:9, 16:9, 4:3, 1:1, 3:4, 9:16

resolution · ResolutionEnum · default: "1080p"

Video resolution - 480p for faster generation, 720p for balance, 1080p for higher quality Default value: "1080p"

Possible values: 480p, 720p, 1080p

duration · DurationEnum · default: "5"

Duration of the video in seconds Default value: "5"

Possible values: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

camera_fixed · boolean · default: "false"

Whether to fix the camera position

seed · integer

Random seed to control video generation. Use -1 for random.

enable_safety_checker · boolean · default: "true"

If set to true, the safety checker will be enabled. Default value: true

num_frames · integer

The number of frames to generate. If provided, will override duration.

Range: 29 to 289

Output Schema

video · File · required

Generated video file

seed · integer · required

Seed used for generation

Input Example

{
  "prompt": "A bright blue race car speeds along a snowy racetrack. [Low-angle shot] Captures several cars speeding along the racetrack through a harsh snowstorm. [Overhead shot] The camera gradually pulls upward, revealing the full race scene illuminated by storm lights",
  "aspect_ratio": "16:9",
  "resolution": "1080p",
  "duration": "5",
  "camera_fixed": false,
  "enable_safety_checker": true
}

Output Example

{
  "video": {
    "url": "https://storage.googleapis.com/falserverless/example_inputs/seedance_pro_t2v.mp4"
  },
  "seed": 42
}

Limitations

• aspect_ratio restricted to: 21:9, 16:9, 4:3, 1:1, 3:4, 9:16
• resolution restricted to: 480p, 720p, 1080p
• num_frames range: 29 to 289
• Content moderation via safety checker