ManagedMediaSource: endstreaming event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Note: This feature is available in Dedicated Web Workers.
The endstreaming event of the ManagedMediaSource interface is fired when the streaming property changes from true to false. This indicates that the user agent has enough data buffered to ensure uninterrupted playback, and the application can stop fetching new media segments.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("endstreaming", (event) => {});
onendstreaming = (event) => {};
Event type
A generic Event.
Examples
Pausing fetches in response to endstreaming
This example creates a ManagedMediaSource, attaches it to a <video> element, and uses the startstreaming and endstreaming events to control when media segments are fetched.
js
const videoUrl =
"https://mdn.github.io/shared-assets/videos/flower-fragmented.mp4";
const mediaType = 'video/mp4; codecs="avc1.64001F, mp4a.40.2"';
if (ManagedMediaSource.isTypeSupported(mediaType)) {
const video = document.createElement("video");
const source = new ManagedMediaSource();
video.controls = true;
video.disableRemotePlayback = true;
video.src = URL.createObjectURL(source);
document.body.appendChild(video);
let shouldFetch = false;
source.addEventListener("sourceopen", () => {
const sourceBuffer = source.addSourceBuffer(mediaType);
source.addEventListener("startstreaming", async () => {
console.log("startstreaming — fetching media data");
shouldFetch = true;
const response = await fetch(videoUrl);
const data = await response.arrayBuffer();
if (shouldFetch) {
sourceBuffer.appendBuffer(data);
}
});
source.addEventListener("endstreaming", () => {
console.log("endstreaming — enough data buffered");
shouldFetch = false;
});
});
}
Specifications
| Specification |
|---|
| Media Source Extensions™ # dfn-endstreaming |