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POST
/
v1
/
videos
/
generations
PixVerse C1 Transition
curl --request POST \
  --url https://api.foxapi.cc/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "pixverse-c1-transition",
  "prompt": "Seamlessly transition from the snowy mountain to a summer green valley",
  "image_url": "https://example.com/mountain-start.jpg",
  "image_tail_url": "https://example.com/valley-end.jpg",
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": 5,
  "generate_audio": true
}
'
{
  "created": 1757165031,
  "id": "task-unified-1757165031-uyujaw3d",
  "model": "<string>",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 45
  },
  "type": "video"
}

Authorizations

​
Authorization
string
header
required

All APIs require Bearer Token authentication

Add to request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json
​
model
string
default:pixverse-c1-transition
required

pixverse-c1-transition: Image transition video, with optional ending frame constraint

Example:

"pixverse-c1-transition"

​
prompt
string
required

Text prompt describing the desired video content

Notes:

  • Supports both Chinese and English
  • Recommended to clearly describe subject, action, scene, and camera language
Example:

"A cinematic dolly shot through a neon cyberpunk alley at night"

​
image_url
string
required

Public URL of the starting image

Notes:

  • Used as the first frame of the transition video
  • Must be a publicly accessible URL
Example:

"https://example.com/mountain-start.jpg"

​
resolution
string
default:720p

Output video resolution

Options:

  • 540p
  • 720p — Default
Example:

"540p"

​
duration
integer
default:5

Output video duration in seconds

Notes:

  • Supports 1 to 15 seconds
  • Defaults to 5 seconds
Example:

5

​
generate_audio
boolean
default:false

Whether to generate accompanying audio

Notes:

  • When enabled, can generate background sounds, sound effects, or dialogue
  • Disabled by default
Example:

false

​
negative_prompt
string | null

Negative prompt describing unwanted elements

Notes:

  • Multiple keywords can be separated by commas

Not required; omit this parameter unless needed.

Example:

"blurry, low quality, watermark"

​
seed
integer | null

Random seed

Notes:

  • Same parameters with the same seed can improve result reproducibility
  • Random if not specified

Not required; omit this parameter unless needed.

Example:

42

​
image_tail_url
string | null

Public URL of the ending image

Notes:

  • Used as the ending frame constraint for the transition video
  • If not provided, the model will infer the ending scene from the prompt
Example:

"https://example.com/valley-end.jpg"

​
aspect_ratio
string
default:16:9

Output video aspect ratio

Options:

  • 16:9
  • 4:3
  • 1:1
  • 3:4
  • 9:16
  • 2:3
  • 3:2
  • 21:9
Example:

"16:9"

Response

Task created successfully

​
created
integer

Task creation timestamp

Example:

1757165031

​
id
string

Task ID

Example:

"task-unified-1757165031-uyujaw3d"

​
model
string

Actual model name used

​
object
enum<string>

Specific task type

Available options:
video.generation.task
​
progress
integer

Task progress percentage (0-100)

Required range: 0 <= x <= 100
Example:

0

​
status
enum<string>

Task status

Available options:
pending,
processing,
completed,
failed
Example:

"pending"

​
task_info
object

Asynchronous task information

​
type
enum<string>

Task output type

Available options:
video
Example:

"video"