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+# [WebCodecs](https://www.w3.org/TR/webcodecs/) Integration
+
+**Roadmap:** This extension describes the integration between WebGPU and WebCodecs.
+Its inclusion is contingent on the recommendation status of the WebCodecs spec.
+It is intended to be implemented by any user agent that implements both WebGPU
+and WebCodecs, though is not yet formally standardized.
+
+## WebGPU Spec Changes
+
+**Feature flags:** None; always enabled when WebGPU and WebCodecs are available.
+
+When WebGPU and WebCodecs are both available, WebGPU allows importing `VideoFrame` objects via
+`GPUDevice.importExternalTexture()`, producing opaque `GPUExternalTexture` objects, which can be
+read from WebGPU shaders. The definition of the `source` member of `GPUExternalTextureDescriptor`
+is modified to allow `VideoFrames`:
+
+```webidl
+partial dictionary GPUExternalTextureDescriptor {
+    required (HTMLVideoElement or VideoFrame) source;
+};
+```
+
+The lifetime of such a `GPUExternalTexture` object is implicitly tied to the
+lifetime of the source `VideoFrame` object. When the `VideoFrame` is
+[closed](https://www.w3.org/TR/webcodecs/#close-videoframe) (e.g. via
+[`VideoFrame.close()`](https://www.w3.org/TR/webcodecs/#dom-videoframe-close) or
+[transferring the `VideoFrame`](https://www.w3.org/TR/webcodecs/#videoframe-transfer-serialization)),
+the `GPUExternalTexture` is
+[destroyed](https://gpuweb.github.io/gpuweb/#dom-gpuexternaltexture-destroyed-slot),
+so no further operations using it can be issued.
+
+## WGSL Spec Changes
+
+**Enable directive(s):** N/A
+
+None. This uses the usual `texture_external` object.
+
+## References
+
+- <https://github.com/gpuweb/gpuweb/issues/2498>