Online film trailer views for “Avatar” increased 109% for a total of 4.7 million in anticipation of James Cameron’s epic 3-D sci-fi release this weekend.The 20th Century Fox pic’s overall view count still trails “New Moon,” “2012,” “Harry Potter and the Half-Blood Prince” and “Transformers: Revenge of the Fallen.” However, while “Twilight’s” final tally of 32.5 million and “2012′s” 13 million eyeballs are likely out of reach, “Avatar’s” final post-release week figures could still surpass “Potter’s” 7.4 million and “Transformers’” 5.9 million views (Note: “Potter” and “Transformers” were on the chart before Visible Measures began tracking post-release week figures). “Alvin and the Chipmunks: The Squeakquel” remained at No. 2 on the chart with one week until release. The 44% increase for a total of 1.8 million views comes despite no apparent new promotional content push, meaning the uptick in interest is probably directly related to anticipation over the release. Disney’s “The Princess and the Frog” jumped from 4th to 3rd place with a 104% increase in its post-release week for 1.4 million views. TWC’s “Nine,” despite receving a Metacritic score of 53, grew 23% one week from release to move up two ranks from No. 6 with approximately 453,683 views. A mystery “Sherlock Holmes” has yet to solve revolves around why — despite moving up from No. 8 to No. 5 with one week until release — the Warner Bros. pic has had more “back on chart” appearances than any other film to date. Another WB pic, “Invictus,” enjoyed a robust 159% increase in its post-release week to move from no. 10 to no. 6 with just under 288 thousand views in its last session of eligibility . “Daybreakers” held steady at No. 7 despite an 8% drop in views, while “Legion” moved up from No. 9 to No. 8 with a 10% bump. Two comedies — “It’s Complicated” and “Youth in Revolt” — made their Visible Measures debut at No. 9 and 10, respectively. Click here for the full chart Data is provided by Visible Measures, an independent third-party measurement firm for internet video publishers, advertisers, and viral marketers. A joint project with Visible Measures and Variety, this chart of the top 10 online film trailers shows the week’s top-performing online video trailers with a focus on films that are within 10 weeks of general release. For more about how to interpret these results as well as additional background on the data collection methodology, please visit Visible Measures.