Vidyard provides the ability to tag videos and players. This allows for a keyword association to multiple pieces of content.
Using the search option in the Dashboard or the menu bar, it is possible to type in a tag name and it will return results containing that tag.
Please bear in mind that the search will also return players and videos that include the text string in the title or description. The relevance ordering should be effective to put the tagged content first, assuming that the string matches the tag in full, and only partially in other areas.