Prolydian supports video in all "rich text" content, including item type intro content and prompts (stems) as well as in multiple choice options. Other features where "rich text" content is supported include exam intro pages, organizational landing pages, application textual content, and NDA agreements.
To support the widest array of desktop and mobile devices, we strictly utilize HTML5 video, which supports MP4, WebM, and Ogg formats. We strongly suggest using MP4 for the broadest support.
If you have videos in other formats, you simply need to "transcode" them to MP4 prior to adding them to your item content. There are many free and inexpensive transcoders available for all major operating systems. If you have many videos to transcode, be sure to select one with "batch" transcoding support to save time.