# MediaEmbedConfig
interface
The configuration of the media embed features.
Read more about [configuring the media embed feature](../features/media-embed/media-embed-configuration.md).
```typescript
ClassicEditor
.create( {
mediaEmbed: ... // Media embed feature options.
} )
.then( ... )
.catch( ... );
```
See [all editor options](module_core_editor_editorconfig-EditorConfig.md).
[See source](https://github.com/ckeditor/ckeditor5/blob/master/packages/ckeditor5-media-embed/src/mediaembedconfig.ts#L29)
## Properties
### `elementName?: string`
Overrides the element name used for "semantic" data.
This is not relevant if [`config.mediaEmbed.previewsInData`](#member-previewsInData) is set to `true`.
When not set, the feature produces the `` tag:
```html
```
To override the element name with, for instance, the `o-embed` name:
```typescript
mediaEmbed: {
elementName: 'o-embed'
}
```
This will produce semantic data with the `` tag:
```html
```
[See source](https://github.com/ckeditor/ckeditor5/blob/master/packages/ckeditor5-media-embed/src/mediaembedconfig.ts#L168)
Defaults to `'oembed'`