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# AVURLAssetOverrideMIMETypeKey

A key that specifies the MIME type to use to identify the format of a media resource.

```
let AVURLAssetOverrideMIMETypeKey: String
```

## Discussion

If you specify a value for this key, the system uses it to determine how to handle or parse the media resource, and ignores any other information that may be available, such as the URL path extension or a server-provided MIME type.

---

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