POST
/
transcriptions
/
async-generate-video
Async Generate Video Transcription
curl --request POST \
  --url https://mavi-backend.memories.ai/serve/api/v2/transcriptions/async-generate-video \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "asset_id": "re_657929111888723968",
  "model": "gemini-2.5-flash-lite"
}
'
{
  "code": "0000",
  "msg": "success",
  "data": {
    "task_id": "ec2449885ba84c4f943a80ff0633158e"
  },
  "failed": false,
  "success": true
}
This endpoint allows you to generate video transcription asynchronously.

​
Code Example

import requests

BASE_URL = "https://mavi-backend.memories.ai/serve/api/v2/transcriptions"
API_KEY = "sk-5f8843b8c0641efd5a3a6478b7679caa"
HEADERS = {
    "Authorization": f"{API_KEY}"
}

def async_generate_video(asset_id: str, model: str):
    url = f"{BASE_URL}/async-generate-video"
    data = {"asset_id": asset_id, "model": model}
    resp = requests.post(url, json=data, headers=HEADERS)
    return resp.json()

# Usage example
result = async_generate_video("re_657929111888723968", "gemini-2.5-flash-lite")
print(result)

​
Response

Returns the transcription task information. 
{
  "code": "0000",
  "msg": "success",
  "data": {
    "task_id": "ec2449885ba84c4f943a80ff0633158e"
  },
  "failed": false,
  "success": true
}

​
Response Parameters

ParameterTypeDescription
codestringResponse code indicating the result status
msgstringResponse message describing the operation result
dataobjectResponse data object containing task information
data.task_idstringUnique identifier of the video transcription task
successbooleanIndicates whether the operation was successful
failedbooleanIndicates whether the operation failed

​
Callback Response Parameters

When the video transcription is complete, a callback will be sent to your configured webhook URL.
ParameterTypeDescription
codestringResponse code (“0000” indicates success)
messagestringStatus message (e.g., “SUCCESS”)
dataobjectResponse data object containing the transcription result and metadata
data.dataobjectInner data object containing transcription segments and usage information
data.data.dataarrayArray of transcription segments with timestamps
data.data.data[].start_timenumberStart time of the segment in seconds
data.data.data[].end_timenumberEnd time of the segment in seconds
data.data.data[].transcriptstringTranscription text for this time segment
data.data.error_ratenumberError rate of the transcription (0.0 means no errors)
data.data.usage_metadataobjectUsage statistics for the API call
data.data.usage_metadata.durationnumberProcessing duration in seconds
data.data.usage_metadata.modelstringThe AI model used for transcription (e.g., “openai/gpt-5-mini”)
data.data.usage_metadata.output_tokensintegerNumber of tokens in the generated transcription
data.data.usage_metadata.prompt_tokensintegerNumber of tokens in the input prompt
data.msgstringDetailed message about the operation result
data.successbooleanIndicates whether the transcription was successful
task_idstringThe task ID associated with this transcription request

​
Understanding the Callback Response

The callback response has a nested structure with the transcription segments and usage information inside data.data. Response Structure: 
callback_response
├── code: "0000"
├── message: "SUCCESS"
├── data
│   ├── data
│   │   ├── data: [array of transcription segments]
│   │   │   └── [
│   │   │       {
│   │   │         start_time: 0.0,
│   │   │         end_time: 2.0,
│   │   │         transcript: "..."
│   │   │       },
│   │   │       ...
│   │   │     ]
│   │   ├── error_rate: 0.0
│   │   └── usage_metadata
│   │       ├── duration: 0.0
│   │       ├── model: "openai/gpt-5-mini"
│   │       ├── output_tokens: 24641
│   │       └── prompt_tokens: 283901
│   ├── msg: "Video transcription completed successfully"
│   └── success: true
└── task_id: "580e35a50faa437480b2d425bdcf1c87"
How to access the data:
  • Transcription segments: callback_response.data.data.data
  • First segment text: callback_response.data.data.data[0].transcript
  • Error rate: callback_response.data.data.error_rate
  • Usage statistics: callback_response.data.data.usage_metadata
  • Model used: callback_response.data.data.usage_metadata.model
  • Token counts: callback_response.data.data.usage_metadata.output_tokens and callback_response.data.data.usage_metadata.prompt_tokens
  • Success status: callback_response.data.success
  • Task ID: callback_response.task_id

Authorizations

​
Authorization
string
header
required

Body

application/json
​
asset_id
string
required

The video asset ID to transcribe

Example:

"re_657929111888723968"

​
model
string
required

The transcription model to use

Example:

"gemini-2.5-flash-lite"

Response

200 - application/json

Transcription task information

​
code
string

Response code indicating the result status

Example:

"0000"

​
msg
string

Response message describing the operation result

Example:

"success"

​
data
object

Response data object containing task information

​
success
boolean

Indicates whether the operation was successful

Example:

true

​
failed
boolean

Indicates whether the operation failed

Example:

false