Audio Pipeline & Spatial Audio

This page covers audio routing, volume management, and 3D spatial attenuation in Quest 3D WebView.

---

1. System WebView Audio (Default Path)

By default, audio generated by web pages (YouTube, Spotify, HTML5 video, Web Audio API) plays through Android's standard system audio output.

• Benefits: Full compatibility with encrypted DRM, Media Source Extensions (MSE/blob), and all streaming media types.
• Control: Use SetMediaVolume(Volume) and SetMediaMuted(bMuted) to control loudness.

---

2. 3D Spatial Audio (Opt-In Direct Media Path)

For experiences requiring 3D positional audio (where sound attenuates with distance from the screen in 3D space):

Configuration Steps:

1. Select QuestWebViewComponent in the Details Panel.
2. Under Quest WebView | Audio:
   • Set bUse3DSpatialAudio = True.
   • Assign a SpatialMediaPlayer (UMediaPlayer).
   • Select a SpatialAudioComponent (UMediaSoundComponent) on your Actor.
3. Configure your sound attenuation settings (inner/outer radius, spatialization method) directly on the MediaSoundComponent.
4. When a direct media URL (e.g. .mp4, .webm) is detected on the webpage, the audio stream is seamlessly routed to the spatial component!

Fallback Behavior

If a video uses Media Source Extensions (blob URLs like YouTube), audio automatically routes through the reliable System WebView audio path to guarantee uninterrupted playback.