# VideoAudioOutputMode

> Places where the audio embedded in a video can be sent.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEngine.Video](/engine/6000.6/script-reference/unityengine/video.md)
* **Assembly:** UnityEngine.VideoModule

```csharp
public enum VideoAudioOutputMode
```

## Remarks

Use this enum to mute your audio, output your audio through Unity’s audio system, or output the audio directly to the audio hardware.

## Examples

```csharp
// This script changes the audio output of a video when you press the Spacebar. 
// Attach this script, an AudioSource component and a VideoPlayer component to a GameObject in your Scene. 
// Assign a video clip to the VideoPlayer. 
// Edit the values of the AudioSource so that it edits the audio when it enters that mode. 

using UnityEngine;
using UnityEngine.Video;

public class SwitchAudioOutputMode : MonoBehaviour
{
    VideoPlayer videoPlayer; 
    AudioSource audioSource; 
    private int currentAudioOutputMode = 0; 

    void Start()
    {
        videoPlayer = GetComponent<VideoPlayer>();
        audioSource = GetComponent<AudioSource>();

        if (videoPlayer == null)
        {
            Debug.LogError("No VideoPlayer assigned!");
            return;
        }

        // Set the initial audio output mode. 
        SetAudioOutputMode(VideoAudioOutputMode.None);

        videoPlayer.Play();
    }

    void Update()
    {
        // Press Spacebar to switch between modes
        if (Input.GetKeyDown(KeyCode.Space))
        {
            CycleAudioOutputMode();
        }
    }

    private void CycleAudioOutputMode()
    {
        // Cycle through the VideoAudioOutputMode enum values. 
        currentAudioOutputMode = (currentAudioOutputMode + 1) % System.Enum.GetValues(typeof(VideoAudioOutputMode)).Length;

        // Apply the new audio output mode. 
        SetAudioOutputMode((VideoAudioOutputMode)currentAudioOutputMode);
    }

    private void SetAudioOutputMode(VideoAudioOutputMode audioOutputMode)
    {
        // Stop video before the audio output changes. 
        videoPlayer.Stop(); 
        videoPlayer.audioOutputMode = audioOutputMode;

        switch (audioOutputMode)
        {
            // The video plays without audio. 
            case VideoAudioOutputMode.None:
                Debug.Log("Audio Output Mode: None");
                break;

            // The video plays audio through an AudioSource. 
            case VideoAudioOutputMode.AudioSource:
                if (audioSource == null)
                {
                    Debug.LogError("AudioSource not assigned! Unable to set AudioSource mode.");
                    return;
                }

                // Link the VideoPlayer to the AudioSource for playback.
                videoPlayer.SetTargetAudioSource(0, audioSource);
                Debug.Log("Audio Output Mode: AudioSource");
                break;

                // Play the audio from the video unaltered. 
            case VideoAudioOutputMode.Direct:
                Debug.Log("Audio Output Mode: Direct");
                break;


            case VideoAudioOutputMode.APIOnly:
                Debug.Log("Audio Output Mode: APIOnly (Raw audio samples exposed)");
                break;

            default:
                Debug.LogError("Unexpected Audio Output Mode!");
                break;
        }

        // Restart video playback with the new output mode. 
        videoPlayer.Play(); 
    }
}
```

## Fields

| Value                                                                                                | Description                                                                                                                                             |
| ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [APIOnly](/engine/6000.6/script-reference/unityengine/video/videoaudiooutputmode/apionly.md)         | Send the embedded audio to the associated [AudioSampleProvider](/engine/6000.6/script-reference/unityengine/experimental/audio/audiosampleprovider.md). |
| [AudioSource](/engine/6000.6/script-reference/unityengine/video/videoaudiooutputmode/audiosource.md) | Send the embedded audio into a specified [AudioSource](/engine/6000.6/script-reference/unityengine/audiosource.md).                                     |
| [Direct](/engine/6000.6/script-reference/unityengine/video/videoaudiooutputmode/direct.md)           | Send the embedded audio direct to the platform's audio hardware.                                                                                        |
| [None](/engine/6000.6/script-reference/unityengine/video/videoaudiooutputmode/none.md)               | Disable the embedded audio.                                                                                                                             |