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index.md
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---
title: "MediaStreamTrackProcessor: readable property"
short-title: readable
slug: Web/API/MediaStreamTrackProcessor/readable
page-type: web-api-instance-property
browser-compat: api.MediaStreamTrackProcessor.readable
---
{{APIRef("Insertable Streams for MediaStreamTrack API")}}
The **`readable`** property of the {{domxref("MediaStreamTrackProcessor")}} interface returns a {{domxref("ReadableStream")}}.
## Value
A {{domxref("ReadableStream")}}.
## Examples
In the following example video frames from the {{domxref("ReadableStream")}} are transformed.
```js
const trackProcessor = new MediaStreamTrackProcessor({ track: videoTrack });
const trackGenerator = new MediaStreamTrackGenerator({ kind: "video" });
/* */
trackProcessor.readable
.pipeThrough(transformer)
.pipeTo(trackGenerator.writable);
```
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}