---
title: level
summary: null
url: https://www.fastly.com/documentation/reference/io/level
---

When converting animated GIFs to the [`MP4`](https://www.fastly.com/documentation/reference/io/format) format and when used in conjunction with the [`profile`](https://www.fastly.com/documentation/reference/io/profile) parameter, the `level` parameter specifies a set of constraints indicating [a degree of required decoder performance](https://en.wikipedia.org/wiki/Advanced_Video_Coding#Levels) for a profile.

## Syntax

```text
level={value}
```

## Allowed values

| Value      | Description                           |
| :--------- | :------------------------------------ |
| `1.[0123]` | Levels: 1.0, 1.1, 1.2, and 1.3        |
| `2.[012]`  | Levels: 2.0, 2.1, and 2.2             |
| `3.[012]`  | Levels: 3.0 _(Default)_, 3.1, and 3.2 |
| `4.[012]`  | Levels: 4.0, 4.1, and 4.2             |
| `5.[012]`  | Levels: 5.0, 5.1, and 5.2             |
| `6.[012]`  | Levels: 6.0, 6.1, and 6.2             |

### Notes

If either `level` or [`profile`](https://www.fastly.com/documentation/reference/io/profile) parameters are missing, `profile=baseline&level=3.0` will be used as the default.

## Examples

Click the links to view the transformed image using a demo Fastly IO service.

| Example usage                                                                                             | Description                                                                                   |
| --------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- |
| [`?format=mp4&profile=main&level=5.2`](https://www.fastly.io/image.gif?format=mp4&profile=main&level=5.2) | Convert the source animated GIF to MP4 format and select the main profile with a level of 5.2 |