@paul_fynn brings up a good point about formatting not coming through. In my experience, @kmoore2431, I have to include wording in the announcement text letting students know there is multimedia in the announcement. Here's an example from the first announcement I posted to my students last semester:
This announcement has two embedded videos. One has a brief welcome message from me:
The other is an introduction to some of my co-workers who are here to support you while a student at CRC:
Even so, my video only has 15 views out of a class of 45 students. One of those views is mine and I think another is my mom. 🤣