index.md

---

title: AudioTrack.sourceBuffer
slug: Web/API/AudioTrack/sourceBuffer
page-type: web-api-instance-property
browser-compat: api.AudioTrack.sourceBuffer

---

{{APIRef("HTML DOM")}}

The read-only {{domxref("AudioTrack")}} property sourceBuffer returns the {{domxref("SourceBuffer")}} that created the track, or null if the track was not created by a {{domxref("SourceBuffer")}} or the {{domxref("SourceBuffer")}} has been removed from the {{domxref("MediaSource.sourceBuffers")}} attribute of its parent media source.

Value

A {{domxref("SourceBuffer")}} or null.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}