The activeSourceBuffers
read-only property of the MediaSource
interface returns a SourceBufferList
object containing a subset of the SourceBuffer
objects contained within sourceBuffers
— the list of objects providing the selected video track, enabled audio tracks, and shown/hidden text tracks.
A SourceBufferList
containing the SourceBuffer
objects for each of the active tracks.
The following snippet is based on a simple example written by Nick Desaulniers (view the full demo live, or download the source for further investigation). The function getMediaSource()
, which is not defined here, returns a MediaSource
.
const mediaSource = getMediaSource();
function sourceOpen() {
console.log(mediaSource.readyState);
const sourceBuffer = mediaSource.addSourceBuffer(mimeCodec);
fetchAB(assetURL, (buf) => {
sourceBuffer.addEventListener("updateend", () => {
mediaSource.endOfStream();
console.log(mediaSource.activeSourceBuffers);
video.play();
console.log(mediaSource.readyState);
});
sourceBuffer.appendBuffer(buf);
});
}