Note: This feature is available in Dedicated Web Workers.
The SourceBufferList interface represents a simple container list for multiple SourceBuffer objects.
The source buffer list containing the SourceBuffers appended to a particular MediaSource can be retrieved using the MediaSource.sourceBuffers property.
The individual source buffers can be accessed using the bracket notation [].
SourceBufferList.length Read onlyReturns the number of SourceBuffer objects in the list.
Inherits methods from its parent interface, EventTarget.
addsourcebufferFired when a SourceBuffer is added to the list.
removesourcebufferFired when a SourceBuffer is removed from the list.
This example shows how to access the active source buffers of the MediaSource connected to an already playing HTMLVideoElement.
// Video is an already playing video using a MediaSource srcObject
const video = document.querySelector("video");
const mediaSource = video.srcObject;
const sourceBufferList = mediaSource.activeSourceBuffers;
for (const sourceBuffer of sourceBufferList) {
// Do something with each SourceBuffer, such as call abort()
sourceBuffer.abort();
}