How do I add an attribute to disable autoplay in an object element in Arbortext

I have used the object element to add few videos in a DITA file in Arbortext Editor 7.1, and set: data=<link to video>, outputclass=iframe.

Refered Zoomin docs: https://docs.zoominsoftware.io/bundle/zoomin-configuration-guide/page/content_manage/t_embed_video.html

When I publish the html5 output on our Doc Portal, all videos automatically play at the same time. Want to know how to disable the autoplay, and make the video run only when I select play.