I've used it for the past 2 years. I open a session during my f2f classes and record the lecture. I then post the link on my LMS for students to review. The recordings are live classes and fairly long, but students seem to like the access. I've noticed students don't ask as many questions about the content when they know the lecture is posted online. It's a real good tool for small groups, every time I try and run a large class some people have technology problems and get frustrated. Not a good thing! There is a learning curve to use this tool effectively. I would say 3-4 hours.
Cheers
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