Embedding HTML Content in DITA Topics
The DITA Open Toolkit that comes bundled with Oxygen XML Author includes a pre-installed plugin that allows you to embed well-formed HTML content directly in a DITA topic.
For example, suppose you wanted to embed a YouTube video directly in a DITA topic.
The DITA topic would look like
this:
....
<foreign outputclass="html-embed"><![CDATA[
<iframe width="420" height="315"
src="https://www.youtube.com/embed/qepRkQxhTX"
frameborder="0" allowfullscreen="true">
</iframe>
]]></foreign>
....
The converted HTML output would look like
this:
...........
<iframe width="420" height="315" src="https://www.youtube.com/embed/qepRkQxhTX"
frameborder="0" allowfullscreen="true">
</iframe>
............
The plugin is also available on the oxygenxml GitHub projects page.