How to Post a Wistia Video Preview Using the Community Bot

hey team, how do i post a video (wistia link) from the community bot, context: i am using the slack builder to post my change log but it will not allow me to have a video preview in my message ( only will allow a watch video button in the post), i dont want to post the link as myself as a follow up message, id like to do it from the community, is this possible?