Limited availability
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 only
Returns the number of SourceBuffer objects in the list.
Inherits methods from its parent interface, EventTarget.
addsourcebuffer
Fired when a SourceBuffer is added to the list.
removesourcebuffer
Fired 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();
}
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