Visible Measures is hoping a new metrics tool helps set benchmarks for online video campaigns.  As reported in Mediaweek, the online video measurement firm has released Trends, a post-campaign analysis tool being used to provide metrics for existing online video efforts and provide data that can be used to plan new campaigns.  Visible Measures chief marketer Matt Cutler said many of their clients express that it s difficult planning out their video campaigns without knowing the benchmarks for success.  Trends data will try and remedy that by providing a metric for existing campaigns based on various measurements including reach, audience demographics, user ratings and online chatter.  The data can be categorized by campaign types, such as social videos, trailers or ads, as well as sorted by industry and product targeting considerations.  Visible Measures said it has data on campaigns by more than 100 companies across dozens of industries.  The company is launching a public beta test for Trends listing the 100 top performing viral videos in its database.  Read more at Mediaweek {link no longer active}.