Inserting and updating uploaded audio and video is done in a similar way to inserting images with the Image Manager.
To insert media
- Select an audio or video file to insert. The URL field will be filled with the file URL, and in most cases the Dimensions fields will be filled with the video dimensions.
- Adjust properties for the media item, such as the Alignment or Margin.
- Adjust the Media Options for the media type, such as Autoplay or Loop.
- Click the Insert button.
The media item will be inserted as placeholder and can be resized and positioned just like an image. The placeholder is converted to <video>, <audio>, <object> or <iframe> code in the Code tab or when you save the article.
Inserting a Youtube, Vimeo or Dailmotion video
For Youtube, Vimeo and Dailymotion videos, just copy the URL for the video from the browser address bar and paste it in to URL field. The URL is automatically converted into the right format, and the default dimensions inserted. Use the Media Options tab to set various options for the video and click the Insert button.
Editing media
Click on the media placeholder to select it, then click the Media Manager button 
to open the Media Manager dialog. Once the required changes have been made, click on the Update button to update the media item and close the dialog.
The media placeholder can be resized, dragged and copy and pasted like an image. To drag resize the media item, click on the placeholder to select it, then drag one of the handles to resize.
Deleting Media
Click on the placeholder to select it, then click the Delete button on your keyboard.