In Vibe 4.x support for youtube videos is possible (hopefully with https links).
It would be great if user can share and publish their own videos (flv, avi, etc ...).
Peter Hurley from kablink community developped a video folder and support for flv. This has dissappeared.
It would be cool to have this feature wiht multiple video format or at least the most popular. The best would be also to be able to place opened videos in landing pages so users have only one click to view it.