diff --git a/src/MediaFX/encoder.qml b/src/MediaFX/encoder.qml
index 319778f..c4b2202 100644
--- a/src/MediaFX/encoder.qml
+++ b/src/MediaFX/encoder.qml
@@ -18,8 +18,13 @@ RenderWindow {
     }
 
     Loader {
+        id: loader
         source: RenderSession.sourceUrl
         anchors.fill: parent
+        Component.onCompleted: {
+            if (loader.status == Loader.Error)
+                RenderSession.fatalError();
+        }
     }
 
     Encoder {
diff --git a/src/MediaFX/main.cpp b/src/MediaFX/main.cpp
index 0991c5c..1d22c74 100644
--- a/src/MediaFX/main.cpp
+++ b/src/MediaFX/main.cpp
@@ -102,14 +102,15 @@ int encoder(QGuiApplication& app, QCommandLineParser& parser)
     if (output == u"-"_s)
         output = u"pipe:"_s;
 
-    // XXX connect to engine warnings and exit if parser.isSet(u"exitOnWarning"_s) flag set
     QQmlApplicationEngine engine;
     MediaContext mediaContext(url, output, frameSize, frameRate, sampleRate);
     RenderSession* renderSession = engine.singletonInstance<RenderSession*>("MediaFX", "RenderSession");
     Q_ASSERT(renderSession);
     renderSession->initialize(mediaContext);
 
-    // XXX If an error occurs, the objectCreated signal is emitted with a null pointer as parameter and error messages are printed with qWarning.
+    if (parser.isSet(u"exitOnWarning"_s)) {
+        QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed, renderSession, &RenderSession::fatalError, Qt::QueuedConnection);
+    }
     engine.load(QUrl(u"qrc:/qt/qml/MediaFX/encoder.qml"_s));
 
     return app.exec();