When using the Desktop recorder the max limit a video can be is 60 minutes. Best practice suggest no longer than 30-60 seconds. Your goal is to catch their attention, provide the information and wrap up the pitch. The processing/saving to the Video Library should only take 1-2 minutes.
The Covideo app with iPhone or Android devices; the max limit a video can be is 10 minutes. Best practice suggests no longer than 10-15 seconds. Upload time should be 1-2 minutes when utilizing the strongest WiFi signal.