> ## Documentation Index
> Fetch the complete documentation index at: https://help.descript.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Adjust Clip Speed, Duration, or Looping

> Set clip speed, duration, and looping in the Properties panel.

Loop background music, freeze a video frame, speed up or slow down a clip, or set a custom duration in your composition.

## Adjust clip speed

Clip speed controls how fast or slow a clip plays in your timeline. **Note:** Changing clip speed is different from [adjusting your composition’s playback speed](/descript-tour/playback-and-navigation)—clip speed affects your final export.

When you change the clip speed, Descript automatically updates the duration: speeding up a clip shortens it, while slowing it down makes it longer.

### To change clip speed:

1. Select the clip you want to adjust.
2. In the **Duration** section of the Properties panel, drag the speed control or type in a new value.

<img src="https://mintcdn.com/descript-5bf56f3f/rKBXdXI8wIKScU9U/images/external/descript-39688183809293-f69df4bab5.jpg?fit=max&auto=format&n=rKBXdXI8wIKScU9U&q=85&s=4f45f2faf3a3a664a8f725aed1314620" alt="Clip Speed Canvas" width="2474" height="1544" data-path="images/external/descript-39688183809293-f69df4bab5.jpg" />

## Change clip duration

Clip duration is the total length of a clip on the timeline. Duration can change when you:

* [Adjust the clip speed](#adjust-clip-speed)
* [Trim the clip](https://help.descript.com/hc/en-us/articles/10249345076365)

### To set a specific duration:

Enter a target length in the [Properties panel](/descript-tour/properties-panel). The right edge of the clip will trim automatically to match.

## Loop or freeze a clip

Looping repeats a video or audio clip automatically to fill space in your scene. Freezing holds the final frame of a clip. These options are only available for layers that are **not** part of the script.

* In [audio-only compositions](/working-in-projects/audio), looped layers extend to the end of the composition.
* In video compositions, looped layers usually end at the end of the scene unless extended manually.

### To loop or freeze a clip:

1. Select a video or audio layer (not the script track).
2. Open the **Properties panel** from the right-hand sidebar.
3. Under **Duration**, choose one of the following:
   * **Once** – Play the clip one time
   * **Loop** – Repeat the clip continuously
   * **Freeze** – Hold the final frame of the clip

<img src="https://mintcdn.com/descript-5bf56f3f/rKBXdXI8wIKScU9U/images/external/descript-39688183810445-c58fcc4271.jpg?fit=max&auto=format&n=rKBXdXI8wIKScU9U&q=85&s=97d08befb0da15e31b105bc4347e605d" alt="Adjust Clip Loop" width="2050" height="1116" data-path="images/external/descript-39688183810445-c58fcc4271.jpg" />

<Warning>
  **Layer transitions and looped media**

  You can't apply [transitions](https://help.descript.com/hc/en-us/articles/10255990548877) to individual layers with looping enabled. If you need a transition, [apply it at the scene level instead](https://help.descript.com/hc/en-us/articles/10255974053773).
</Warning>

## Constrain a looped clip to a scene

You can limit how far a looped clip extends by attaching it to the scene.

1. Select the layer.
2. Drag the left edge of the layer toward the scene’s left edge until a red dotted line appears, then release to attach it.

For more, see [Attaching layers to scenes](/visuals/attach-layer).

<Note>
  **How scenes affect loop duration**

  * Most looped layers stop at the end of a scene—unless attached or extended manually.
  * Some media types, like music from our [stock libraries](/descript-tour/media-panel), can loop across an entire composition.
  * In [audio-only compositions](/working-in-projects/audio), looped layers extend to the end of the composition, since there are no scenes.
</Note>