---
title: "loop_video: Loop a performance bank"
description: "Rotate one to three owned 1–15 second video takes to a target duration, up to 30 minutes."
canonical_url: "https://meetkuro.com/agents/tools/loop_video/"
updated: 2026-11-03
locale: "en"
tool: "loop_video"
scopes: ["generation.write"]
---

# loop_video

**Loop a performance bank**

Rotate one to three owned 1–15 second video takes to a target duration, up to 30 minutes. Plain loop or ping-pong. Output is silent for dubbing. Free; uses storage. get_generation waits for the result.

## Scope

- `generation.write` — Makes, edits, imports, shares and deletes media in the account.

## Behaviour

- **Writes**: Creates or changes items in the caller's own account.
- **Adds or updates**: Adds or updates; nothing the caller already has is deleted or overwritten.
- **Stays in the account**: Stays inside the caller's private Kuro account: any media provider it calls acts on Kuro's account, and the result is visible to no one else.

## Inputs

| Name | Type | Required | Details |
| --- | --- | --- | --- |
| `sources` | array of object (type: "upload") or object (type: "generation") | yes | at least 1 item; at most 3 items |
| `duration_seconds` | number | yes | ≥ 1; ≤ 1800 |
| `mode` | string | no | one of "loop", "ping-pong"; default "loop" |

## Example call

A `tools/call` request with the required arguments only, each a placeholder read off the schema. Replace them before sending.

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "loop_video",
    "arguments": {
      "sources": [
        {
          "type": "upload",
          "upload_id": "00000000-0000-4000-8000-000000000000"
        }
      ],
      "duration_seconds": 1
    }
  }
}
```

## Input schema

As the server sends it in `tools/list`:

```json
{
  "type": "object",
  "properties": {
    "sources": {
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "upload"
              },
              "upload_id": {
                "type": "string",
                "format": "uuid"
              }
            },
            "required": [
              "type",
              "upload_id"
            ],
            "additionalProperties": false
          },
          {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "generation"
              },
              "generation_id": {
                "type": "string",
                "format": "uuid"
              }
            },
            "required": [
              "type",
              "generation_id"
            ],
            "additionalProperties": false
          }
        ]
      },
      "minItems": 1,
      "maxItems": 3
    },
    "duration_seconds": {
      "type": "number",
      "minimum": 1,
      "maximum": 1800
    },
    "mode": {
      "type": "string",
      "enum": [
        "loop",
        "ping-pong"
      ],
      "default": "loop"
    }
  },
  "required": [
    "sources",
    "duration_seconds"
  ],
  "additionalProperties": false
}
```

## Related tools

- [`get_generation`](https://meetkuro.com/agents/tools/get_generation.md): Get current status and signed media URL for one generation.

---

## About Kuro

Kuro is an AI picture studio: prompt-driven images, clips, voice-overs and music, and storyboard-backed films with consistent characters across every scene.

Agents connect over MCP and can generate directly:

```
claude mcp add kuro https://api.meetkuro.com/mcp --transport http
```

The app is at https://app.meetkuro.com and requires an account.

Each guide, model page, comparison and free tool page on this site (not a tool's variants, and not the index pages) has a Markdown twin at its own URL plus `.md`, and so do /benchmarks/, the English /agents/ page (as /agents.md) and the MCP tool reference. Every tool: https://meetkuro.com/agents/tools/