Bug 1874293 Comment 7 Edit History

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Original comment by
on 
Thanks both for the analysis here.

I think we want to align with Chrome, that has a behaviour that I find sensible. Simplifying the test case to:

```js
var buf = new ArrayBuffer(new Uint8Array(4));
window.postMessage(buf)
VideoDecoder.isConfigSupported({"codec": "vp8", "description":buf})
```

it says:

```
Uncaught (in promise) TypeError: Failed to execute 'isConfigSupported' on 'VideoDecoder': description is detached.
```

I've filed https://github.com/w3c/webcodecs/issues/762 to make the spec clear, and I'll write a patch for our implementation to align.
Revision 1 by
on 
Thanks both for the analysis here.

I think we want to align with Chrome, that has a behaviour that I find sensible. Simplifying the test case to:

```js
var buf = new ArrayBuffer(4);
buf.transferToFixedLength()
VideoDecoder.isConfigSupported({"codec": "፝a", "description":buf})
```

it says:

```
Uncaught (in promise) TypeError: Failed to execute 'isConfigSupported' on 'VideoDecoder': description is detached.
```

I've filed https://github.com/w3c/webcodecs/issues/762 to make the spec clear, and I'll write a patch for our implementation to align.

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