It is possible to add video and sounds to your page by uploading the media file with metadata to you Item Set and then adding the desired media via the Media Embed widget. Please note, any files over 1 gigabyte will not upload to OmekaS so you'll need to be aware of the file size.
If there is a video on YouTube that you'd like to add to your page, below are the instructions.
It is possible to upload YouTube videos with metadata by adding an Item, then when in the media tab add the YouTube feature.
Then to add this to your page, use the Media Embed plugin to add the video:
This is how the video will appear:
Another option to upload a YouTube video would be to use the iFrame code provided by YouTube. This will allow you to customize the size of the media box that appears on the page. For example, this is the iFrame provided by YouTube for the video above:
<iframe width="560" height="315" src="https://www.youtube.com/embed/kbLE1-nOlSs" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
Below is a comparison of how these two different ways to add a YouTube video to a page. The left is the Media Embed and the right is the iFrame provided by YouTube. The video on the left allows accompanying metadata for the video.