it doesn’t work for me. I pause the video to the image I want, click the “set as preview” button" and 30 minutes later I’m still watching this little circle spinning with no update.
UGH!
Yesterday tasted this wonderful feature. Cool, now just what I need 
Reply to @steveeyes: It may take up to 24 hours, if I remember correctly. I have a 24 hours shift or even less.
Congratulations everyone, we now have access to a feature created 15 years ago by any other video platform. On the contrary, the sound quality in the videos is now substantially lower, and this is the same for audio files in our gig page. This is great for someone providing audio related services…