Quick survey and share my pains in the meantime: - The audience has limited attention bandwidth, to present the product well in a short period of time is challenging. - To record a product demo requires to move the mouse quickly and often have to switch among various web pages or apps frequently, which is a real challenge with the time limit - Follow the script to operate the product while recording can include many backs and forth - It's difficult to explain well while operating the product with time limit - Putting together the recordings and BGM is another barrier