In a sign that viewers are not being turned off by the increased ad volume, ad completion rates were highest for long videos in Q4 2012 at 93%, compared with 81% for mid-form videos and 68% for short-form videos. All three video categories also had higher completion rates in the last quarter of 2012 when compared to the previous one, suggesting that advertisers are fine-tuning their video strategy and convincing viewers to watch ad content from start to finish. Read the rest at eMarketer.
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![Video Ad Completion Rates, Q4 2011 - Q4 2012 [TABLE] Table - Video Ad Completion Rates](http://www.emarketer.com/images/chart_gifs/151001-152000/151931.gif)