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 canConstructInDedicatedWorker static property of the MediaSource interface returns true if MediaSource worker support is implemented, providing a low-latency feature detection mechanism.
If this were not available, the alternative would be a much higher latency approach such as attempting the creation of a MediaSource object from a dedicated worker and transferring the result back to the main thread.
A boolean. Returns true if MediaSource worker support is implemented, or false otherwise.
if (MediaSource.canConstructInDedicatedWorker) {
// MSE is available in workers; let's do this
}
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
canConstructInDedicatedWorker_static |
108 | 108 | No | 94 | 18 | 108 | No | 73 | 18Exposed in Mobile Safari on iPad but not on iPhone. |
21.0 | 108 | 18Exposed in Mobile Safari on iPad but not on iPhone. |
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https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/canConstructInDedicatedWorker_static