dotnet / dotnet/wpf

MediaElement does not work with AV1 Video Extension 2.0.4.0/1.3.20.0

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External Non-WPF Issue
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Description

### Description

MediaElement does not work with AV1 Video Extension 2.0.4.0/1.3.20.0.

Version 1.3.4.0 is normal.

### Reproduction Steps

```xaml



```

### Expected behavior

The AV1 video can be played normally using the MediaElement.

AV1 Video Extension

* 2.0.4.0
* 1.3.20.0

### Actual behavior

The video shows as blank when playing with MediaElement.

### Regression?

_No response_

### Known Workarounds

* Use K-Lite Codec Pack
* Use AV1 Video Extension 1.3.4.0 and lower(But it will update automatically.)

### Impact

_No response_

### Configuration

_No response_

### Other information

Sample AV1 Video: https://github.com/user-attachments/assets/bef8d29d-5ab8-47c3-81bd-2857b7c4e7c7

It seems that it can be verified directly using Windows Media Player Legacy.

Contributor guide

Open the contributing guide

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