From Rocco Martino, build fix for compiling against ffmpeg/trunk
From Rocco Martino, build fix for compiling against ffmpeg/trunk


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