Alpha video on Designer Beta

When you launched designer beta, you mention that Alpha video will be supported.I followed the steps you recommended, but when I imported the WebM video into designer, nothing happens, still getting the black background.
What do I do?

Hey Planmundo!

Sorry that you are having trouble with getting your alpha video to play correctly in Designer. Do you think you could send the file to us at so the team can diagnose what has gone wrong?