У вашего броузера проблема в совместимости с HTML5
Learn the basics of sketching with SOLIDWORKS, including a quick look at mirroring, dynamic mirroring, offset entities, convert entities, and trim commands in SOLIDWORKS 2011. This video takes a "new to SOLIDWORKS" stance and explores some of the most frequently used sketching tools.
Quick Tips video presented by Joseph Cutrona of GoEngineer (www.goengineer.com)