From Jean-Sebastien Guay, added non pkg-config based ffmpeg search scheme.
From Jean-Sebastien Guay, added non pkg-config based ffmpeg search scheme.


ntoand/osg,stmh/osg,koshman86/osg,omega-hub/osg,XiaoCC/osg,ntoand/osg,omega-hub/osg,artoolkit/osg,stmh/osg,ghub/osg,artoolkit/osg,ntoand/osg,stmh/osg,ghub/osg,koshman86/osg,artoolkit/osg,koshman86/osg,ntoand/osg,XiaoCC/osg,koshman86/osg,ghub/osg,omega-hub/osg,XiaoCC/osg,stmh/osg,omega-hub/osg,stmh/osg,ghub/osg,XiaoCC/osg,XiaoCC/osg,artoolkit/osg