Commercials appearing in local newscasts represent the most effective video advertising platform, a study by Hearst-Argyle Television, which owns 26 U.S. TV stations, has concluded. Speaking at the annual Association of National Advertisers (ANA) conference in New York, Hearst-Argyle chief David Barrett also pointed out that local TV news is more "DVR proof" than other broadcasts because viewers tend to watch the programs live and therefore can't fast forward through commercials.