Online video viewing may have surged 35 percent and DVR usage may have risen 21 percent over the past year, but 99 percent of video viewing occurred in front of a TV set using neither of those delivery methods, according to a study by Nielsen Media Research. The average viewer watched only 31 minutes of TV via DVR playback in a typical week versus 31 hours of traditional TV viewing, the study said. Online viewing was even less -- just 22 minutes per week. As for mobile video -- that amounted to just three minutes. But the times they are a-changin', Nic Covey, who has the title of "Director of Insights" for Nielsen, suggested in a statement. "Americans today have an insatiable appetite for not only content, but also choice," he said. "Across all age groups, we see consumers adding the Internet and mobile devices to their media diet -- consuming media anytime and anywhere possible."