usage info in video example

gwaldron · Jul 3, 2024 · 4bf2452 · 4bf2452
1 parent e994c6d
commit 4bf2452
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/applications/osgearth_video/osgearth_video.cpp b/src/applications/osgearth_video/osgearth_video.cpp
@@ -45,6 +45,12 @@ main(int argc, char** argv)
 
     osg::ArgumentParser arguments(&argc,argv);
 
+    if (argc < 2)
+    {
+        OE_WARN << "Usage: osgearth_video <video1>" << std::endl;
+        return -1;
+    }
+
     // initialize a viewer:
     osgViewer::Viewer viewer(arguments);