When creating content such as a Document or a Blog Post with an embedded video, you may notice that any changes made to the video's size are lost when publishing the content. This article explains the expected product behavior in this scenario.
Even though the Rich Text Editor (RTE) does allow you to resize the videos while editing the content, the changes are lost when publishing the content. Manually changing the HTML source code to include the height and width attributes doesn't save the size changes in the videos either.
This is the product's expected behavior as Jive uses Embedly for embedding the videos in your community.