# Using accurate audio/video synchronization


 The **Accurate Audio/Video synchronization** setting enables a mode that minimizes the time difference in audio and video playback. This mode is useful in workloads that require the video and audio to be accurately synchronized, such as lip sync. 

**Note**  
This feature may produce a lag in the perceived responsiveness of the remote system.

 Accurate Audio/Video Synchronization functionality is supported on Windows and Linux servers with hardware GPU acceleration, and for console sessions only. It is supported on all native clients. 

**Note**  
Accurate Audio/Video Synchronization is not supported on web based clients.

**To enable or disable Audio/Video Synchronization**

1. Launch the client and connect to the Amazon DCV session.

1. Do one of the following depending on your client.
   + Windows clients

     1. Choose the **Settings** icon.

     1. Select **Accurate Audio/Video Synchronization** from the drop-down menu.  
![\[Audio/Video Settings button that's located at the bottom of the Settings menu.\]](http://docs.aws.amazon.com/dcv/latest/userguide/images/av-sync-setting-windows-client.png)
   + macOS clients

     1. Choose the **DCV Viewer** icon.

     1. Select **Preferences** from the drop-down menu.

     1. Check the box for **Accurate Audio/Video Synchronization**.  
![\[Audio/Video Settings button that's located at the bottom of the Settings menu.\]](http://docs.aws.amazon.com/dcv/latest/userguide/images/mac-preferences-av-sync.png)
   + Linux clients

     1. Choose the **Settings** icon.

     1. Select **Preferences** from the drop-down menu.

     1. Check the box for **Accurate Audio/Video Synchronization**.  
![\[Audio/Video Settings button that's located at the bottom of the Settings menu.\]](http://docs.aws.amazon.com/dcv/latest/userguide/images/linux-preferences-av-sync.png)