How to use Multi-transition?

Overview

The Multi-transition(Multi-frame) feature allows you to generate a 1–30 second video with consistent style and smooth transitions by providing 2–7 keyframes.It is designed for professional creators, offering more fine-grained control over the video to ensure characters and actions remain coherent and controllable throughout the sequence.

Generation Endpoint: ``

Prerequisites

Before you begin, make sure you have:

A valid PixVerse API key

A unique Ai-trace-id for each API request

An active subscription with available or purchased API credits

The img_id(s) of the reference images you want to use in Fusion

Quick Start

1: Prepare Your Images

2. Multi-transition API Request

3. Check generation status & download

Step-by-Step Guide

You can input your video in two ways:

Step 1. Prepare Your Image

Use high-quality and clear images. Higher resolution is recommended for better results.

For subject images, choose images where the main subject is clearly isolated and prominent.

For background images, select images with a clean and well-defined background.

Step 2. Prepare Your upload image API Request and uplaod image to get img_id

Construct your API request with the appropriate parameters:

Step 3: Send Multi-transition API Request

🔧 Parameter Details

Parameter Name	Required	Type	Description
multi_transition	required	array	1.multi_transition must be an array containing 2 to 7 items. 2.Each item in multi_transition should include: img_id (required, integer), duration (required, integer, not required for the last item), prompt (optional, string)
model	Required	string	v3.5,v4,v4.5,v5
quality	Required	string	360p,540p,720p,1080p
motion_mode	Optional	string	"normal","fast" On models v4.5 or earlier, fast_mode: fast only supports durations up to 5 seconds.
seed	Optional	integer	Random seed, int32 random number between 0 - 2147483647

Step 3. Handle the API Response

The API returns a JSON response with a video_id:

{
  "ErrCode": 0,
  "ErrMsg": "success",
  "Resp": {
    "video_id": 0
  }
}

Step 4 Check Generation Status

After creating the task, you will receive a video_id

Query periodically Get Video Generation Status API using this video_id

The status will change from 5 to 1 when processing is complete

  {
 "ErrCode": 0,
 "ErrMsg": "string",
 "Resp": {
   "create_time": "string",
   "id": 0,
   "modify_time": "string",
   "negative_prompt": "string",
   "outputHeight": 0,
   "outputWidth": 0,
   "prompt": "string",
   "resolution_ratio": 0,
   "seed": 0,
   "size": 0,
   "status": 5,
   "style": "string",
   "url": "string"
 }
}

Step 5 Download the Generated Video

You can access a generated video with "url"

  {
 "ErrCode": 0,
 "ErrMsg": "string",
 "Resp": {
   "create_time": "string",
   "id": 0,
   "modify_time": "string",
   "negative_prompt": "string",
   "outputHeight": 0,
   "outputWidth": 0,
   "prompt": "string",
   "resolution_ratio": 0,
   "seed": 0,
   "size": 0,
   "status": 1,
   "style": "string",
   "url": "string"
 }
}

Troubleshooting

Common issue

Your video is stuck in "Generating" status and hasn't completed after a long wait.

Please check if you're using the same AI-trace-ID for every request. This is the most common cause of this issue.

Status codes: 1: Generation successful; 5: Waiting for generation; 7: Content moderation failure; 8: Generation failed;

If you encounter status code 7, it means your generated video was filtered by our content moderation system. Please modify your parameters and try again. Any credits used for filtered videos will be automatically refunded to your account.

Common error codes

400/500 status : Incorrect code

400013 : Invalid binding request: incorrect parameter type or value

400017 : Invalid parameter

multi_transition's duration in each item must be between 1–8.

multi_transition with 3 or more items, each duration must be between 1 and 5 seconds.

On models v4.5 or earlier, fast_mode: fast only supports durations up to 5 seconds.

multi_transition must be an array containing 2 to 7 items.

Each item in multi_transition should include: img_id (required, integer), duration (required, integer, not required for the last item), prompt (optional, string)

The last item’s duration must be 0 or can be optional.

500044 : Reached the limit for concurrent generations.

Overview#

Prerequisites#

Quick Start#

Step-by-Step Guide#

Step 1. Prepare Your Image#

Step 2. Prepare Your upload image API Request and uplaod image to get img_id#

Step 3: Send Multi-transition API Request#

Step 3. Handle the API Response#

Step 4 Check Generation Status#

Step 5 Download the Generated Video#

Troubleshooting#

Common issue#

Common error codes#