In an age of media abundance, attention spans are rapidly decreasing. That means your web video shouldn’t be too long or you’ll lose your audience. The ideal web video length used to be 2 minutes and 50 seconds, but today it should be as short as possible! That means 1 minute or 30 seconds, 15 seconds… whatever it takes to get your point across after you’ve removed unwanted fluff.
When live streaming, try to keep this in mind as well. You’ll notice when people start tuning in and dropping off. For live streaming, you’ll need to be on long enough for viewers to jump in, but keep what you’re saying brief enough, before they dropout.