# frameRate

> The frame rate for the encoded video, in frames per second, expressed as a fraction.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor.Media](/engine/6000.7/script-reference/unityeditor/media.md)
* **Assembly:** UnityEditor

```csharp
public MediaRational frameRate
```

### Remarks

To indicate that the track uses a variable frame rate (VFR), specify a frame rate of 0, or an invalid frame rate. In VFR mode, there is no pre-defined frame duration, which means that frames that you add using [MediaEncoder.AddFrame](/engine/6000.7/script-reference/unityeditor/media/mediaencoder/addframe.md) must use the overload that receives a [MediaTime](/engine/6000.7/script-reference/unityeditor/media/mediatime.md).