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POST
PixVerse C1 Transition

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"