Assets overview

Open API assets are resources you create and reference by ID in task requests. There are two types:

Asset	ID field	Purpose
Material	`materialId`	Video or audio used as input (mainly media translation). Usable only after the full upload flow completes
Voice	`voiceId`	System preset or cloned voice used in TTS

API-only storage

Materials and voices created through the API are not shared with files or voices you manage on vmeg.ai. Use /openapi/v1/assets/** only. API tasks are separate too; see Products overview. List and delete operations return only assets tied to your API Key. Voice list endpoints use the same scope.

Typical flow

Complete full material upload → registered materialId → media translation task
Voice clone task → voiceId → TTS task
List basic voices → voiceId → TTS task

Guides

Materials

Material types, list, and delete

Material upload

Presigned and multipart upload

Voices

System and cloned voices

Request and response fields: Assets - Materials and Assets - Voices in API reference.

Webhook verification Materials

Get started

Authentication

MCP

Reliable requests

Webhooks

Assets

Products

Limits

API-only storage

Typical flow

Guides

Materials

Material upload

Voices

​API-only storage

​Typical flow

​Guides

Materials

Material upload

Voices

API-only storage

Typical flow

Guides