Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The writable property of the MediaStreamTrackGenerator interface returns a WritableStream. This allows the writing of media frames to the MediaStreamTrackGenerator. The frames will be audio or video. The type is dictated by the kind of MediaStreamTrackGenerator that was created.
In the following example video frames are transformed then written to the WritableStream accessed with MediaStreamTrackGenerator.writable.
const trackProcessor = new MediaStreamTrackProcessor({ track: videoTrack });
const trackGenerator = new MediaStreamTrackGenerator({ kind: "video" });
/* */
trackProcessor.readable
.pipeThrough(transformer)
.pipeTo(trackGenerator.writable);
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
writable |
94 | 94 | No | 80 | No | 94 | No | 66 | No | 17.0 | 94 | No |
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https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrackGenerator/writable