Allan MacKenzie of Brisbane, AU sent me an example of a home he shot recently. He's posted both stills and video to this SmugMug slide show format. I've seen other real estate photographers use this SmugMug slide show format which allows you to post both stills and video in the same tour.
On the surface this format looks pretty cool allowing you to include both video and stills in the same tour. However, I noticed that the SmugMug video plays jerky (you have to keep clicking the play button) on my iMac and my iPhone. Where as the iPlayer version of Allan's same video plays smoothly and continuously on every device I have. Needless to say Allan is impressed with iPlayer hosting. I think this is an excellent example of why you have to be cautious these days about choosing video hosting. Try it out and make sure what the user experience looks like before you commit. Yes SmugMug is cheaper but the end user experience for video is a problem for me. I think the SmugMug format is very useable for real estate stills but to me the video performance is too erratic.
I believe the difference between the video technology that SmugMug uses and what iPlayer uses (actually you can configure iPlayer to use progressive downloading or streaming) is Progressive Downloading vs Streaming. My understanding is that with streaming the video is metered out at the rate the viewing device can take it where as with progressive downloading the video is buffered at the receiving end. The iPlayer streaming approach makes for a much better viewing experience.