Jevrouter Video API · image-to-video

pixverse v5.5 transition

pixverse/pixverse-v5.5-transition:video

Create smooth morph transitions between two images into 5s , 8s or 10s videos at 360p, 540p, 720p, or 1080p—perfect for logo reveals, before-and-after shots, and social posts. Ready-to-use REST inference API, best performance, no cold starts, affordable pricing.

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Options and pricing

Task: image-to-video. Catalog base price: $0.45. The exact quote depends on your inputs; the catalog price is not a fixed per-task charge.

We reserve the quoted maximum before submission, settle the actual generation cost and release the remainder. Set jev.max_cost_usd to your maximum reservation. A quote above this limit is rejected before generation.

Input field	Type	Required	Options / default
`seed`	integer	No	See schema
`image`	string	Yes	See schema
`prompt`	string	Yes	See schema
`duration`	integer	No	[5,8,10]
`end_image`	string	Yes	See schema
`resolution`	string	No	["360p","540p","720p","1080p"]
`aspect_ratio`	string	No	["16:9","1:1","4:3","3:4","9:16"]
`thinking_type`	string	No	["enabled","disabled","auto"]
`negative_prompt`	string	No	See schema

Complete input schema

{
  "type": "object",
  "allOf": [
    {
      "if": {
        "required": [
          "resolution"
        ],
        "properties": {
          "resolution": {
            "const": "1080p"
          }
        }
      },
      "then": {
        "properties": {
          "duration": {
            "enum": [
              5,
              8
            ],
            "type": "integer",
            "default": 5
          }
        }
      }
    },
    {
      "if": {
        "required": [
          "resolution"
        ],
        "properties": {
          "resolution": {
            "enum": [
              "360p",
              "540p",
              "720p"
            ]
          }
        }
      },
      "then": {
        "properties": {
          "duration": {
            "enum": [
              5,
              8,
              10
            ],
            "type": "integer",
            "default": 5
          }
        }
      }
    }
  ],
  "required": [
    "prompt",
    "image",
    "end_image"
  ],
  "properties": {
    "seed": {
      "type": "integer",
      "description": "The random seed to use for the generation."
    },
    "image": {
      "type": "string",
      "description": "The model generates video with the picture passed in as the first frame.Base64 encoded strings in data:image/jpeg; base64,{data} format for incoming images, or URLs accessible via the public network. The uploaded image needs to meet the following conditions: Format is JPG/JPEG/PNG; The aspect ratio is greater than 2:5 and less than 5:2; Short side pixels greater than 300px; The image file size cannot exceed 20MB."
    },
    "prompt": {
      "type": "string",
      "description": "The positive prompt for the generation."
    },
    "duration": {
      "enum": [
        5,
        8,
        10
      ],
      "type": "integer",
      "default": 5,
      "description": "Video duration in seconds.",
      "x-ui-component": "select"
    },
    "end_image": {
      "type": "string",
      "description": "The model generates video with the picture passed in as the last frame.Base64 encoded strings in data:image/jpeg; base64,{data} format for incoming images, or URLs accessible via the public network. The uploaded image needs to meet the following conditions: Format is JPG/JPEG/PNG; The aspect ratio is greater than 2:5 and less than 5:2; Short side pixels greater than 300px; The image file size cannot exceed 20MB."
    },
    "resolution": {
      "enum": [
        "360p",
        "540p",
        "720p",
        "1080p"
      ],
      "type": "string",
      "default": "540p",
      "description": "Video quality (360p/540p/720p/1080p).",
      "x-ui-component": "select"
    },
    "aspect_ratio": {
      "enum": [
        "16:9",
        "1:1",
        "4:3",
        "3:4",
        "9:16"
      ],
      "type": "string",
      "default": "16:9",
      "description": "The aspect ratio of the generated media.",
      "x-ui-component": "select"
    },
    "thinking_type": {
      "enum": [
        "enabled",
        "disabled",
        "auto"
      ],
      "type": "string",
      "default": "auto",
      "description": "Prompt reasoning enhancement. Controls whether the system should enhance your prompt with internal reasoning and optimization. \"enabled\" : Turn on system-level optimization. \"disabled\" : Turn off system-level optimization. \"auto\": Let the model decide automatically",
      "x-ui-component": "select"
    },
    "negative_prompt": {
      "type": "string",
      "description": "The negative prompt for the generation."
    }
  },
  "x-order-properties": [
    "prompt",
    "image",
    "end_image",
    "aspect_ratio",
    "duration",
    "resolution",
    "thinking_type",
    "negative_prompt",
    "seed"
  ],
  "additionalProperties": false
}

Required fields and conditional rules come from the published schema. Catalog support does not mean every option has been independently tested by Jevrouter. Synchronous generation, base64 output and customer callbacks are unavailable.

1. Submit a video task

Allow this model on your Jevrouter key. Replace every placeholder below with a value of the correct type, set a USD limit, and supply any conditional fields required by the schema. Media inputs must use your own accessible URLs; this endpoint does not upload files.

curl https://api.jevrouter.io/v1/videos \
  -H "Authorization: Bearer $JEVROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: video-demo-001" \
  -d @- <<'JSON'
{
  "model": "pixverse/pixverse-v5.5-transition:video",
  "input": {
    "image": "<image: provide string>",
    "prompt": "<prompt: provide string>",
    "duration": 5,
    "end_image": "<end_image: provide string>",
    "resolution": "540p",
    "aspect_ratio": "16:9",
    "thinking_type": "auto"
  },
  "jev": {
    "max_cost_usd": "YOUR_USD_LIMIT"
  }
}
JSON

Save data.id and data.urls.get. An accepted task continues even if you disconnect.

Let Jevrouter choose

Use jev/auto as the model and set task to image-to-video. Your project must enable Auto, and both the project and key must allow Auto and the candidate models.

Auto checks the task type and all supplied input fields against each candidate. It compares live quotes for up to eight compatible candidates, shortlisted by catalog base price. It selects the lowest quote within that shortlist and your budget; this is not a quality ranking or a guarantee of the cheapest model in the entire catalog.

Use common options such as duration, resolution and aspect_ratio at the top level where available. Model-specific options belong in input and may narrow the pool. Unsupported options are rejected, never silently dropped. Without task, Auto defaults to text-to-video.

2. Check the result

curl https://api.jevrouter.io/v1/videos/REQUEST_ID \
  -H "Authorization: Bearer $JEVROUTER_API_KEY"

Replace REQUEST_ID with your task ID. Wait at least three seconds between checks. Status progresses from queued to processing, then completed or failed. Results appear in data.outputs as media URLs or structured output objects.

If the submission response is lost, repeat the original request with the same idempotency key. A new key may create another billed task.

Results and billing

View the request in your dashboard or query /v1/requests/REQUEST_ID for reservation and settlement details. Results may be ready before the bill arrives.

Result links are retained for up to seven days and may expire earlier. Save your video while it is available. Anyone with a media URL may be able to access it. Cancellation and customer webhooks are not available.

Build the complete flow

Python example: generate, resume and download Video API contract and errors