Too slow a pace is as common as too fast. A recording of a live demo will appear too slow. The exposition style of your videotape presentation will greatly affect its impact. Use the multiple modes of communication that are available simultaneously in videotape. Tell the viewer where to look and what to look for.
Display screens have few natural navigation aids.
This might be a wide shot of the group in a meeting room, a split-screen shot of users in different locations, a wide shot of a meeting participant at the computer, or of the entire computer screen. This helps the viewer stay oriented. Periodically return to an establishing shot to keep the viewer from getting confused. Each shot should be visually well-composed. Avoid having the subject in the exact middle of the screen.