Online video is big. Americans watched a record 13.5 billion online videos in October, the last month for which figures are available, according to Comscore. That's a 45 percent increase from a year ago. Nearly 8 out of 10 Internet users watched an online video, and among younger users, the Internet has already become a TV substitute.

Some of the most effective Internet videos are ones that allow travelers to "voice and record their own perspective, opinion and experience," says Fionn Downhill, the chief executive of Elixir Interactive, an interactive marketing agency in Scottsdale, Arizona. "Videos documenting authentic, user-generated experiences spread like quick fire because they speak to the concerns and sentiment of the market."

How do you become part of the video revolution on your next vacation? Here are a few tips.

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