If you need to post in Blackboard some media from Kaltura here are the instruction you will need to follow.
1) Click on the Assignment
2) Click on the Write Submission
3) Select the + button in the text box. (you may have to hit the three vertical dots to find it)
4) Scroll down the menu and find Kaltura Media - this will open your Kaltura Media Library
5) Find your video and Embed the video into the assignment