BUG-18252 - media flipped on OS X when played in 2D browser

indra/media_plugins/quicktime/media_plugin_quicktime.cpp

@@ -921,7 +921,10 @@ void MediaPluginQuickTime::receiveMessage(const char *message_string)
 				#endif
 				message.setValueS32("depth", mDepth);
 				message.setValueU32("internalformat", GL_RGB);
-				message.setValueBoolean("coords_opengl", true);	// true == use OpenGL-style coordinates, false == (0,0) is upper left.
+
+                // note this apparently only has an effect when media is opened in 2D browser. 
+                // see https://jira.secondlife.com/browse/BUG-18252 - media flipped in 2D so flipping it back.
+				message.setValueBoolean("coords_opengl", false);	// true == use OpenGL-style coordinates, false == (0,0) is upper left.
 				message.setValueBoolean("allow_downsample", true);
 				sendMessage(message);
 			}