Fix adjust to original size using proxy resolution

Fixes #1331

src/mltcontroller/clipcontroller.cpp

@@ -636,6 +636,19 @@ const QSize ClipController::getFrameSize() const
     if (m_masterProducer == nullptr) {
         return QSize();
     }
+    if (m_usesProxy) {
+        int width = m_masterProducer->get_int("kdenlive:original.meta.media.width");
+        int height = m_masterProducer->get_int("kdenlive:original.meta.media.height");
+        if (width == 0) {
+            width = m_masterProducer->get_int("kdenlive:original.width");
+        }
+        if (height == 0) {
+            width = m_masterProducer->get_int("kdenlive:original.height");
+        }
+        if (width > 0 && height > 0) {
+            return QSize(width, height);
+        }
+    }
     int width = m_masterProducer->get_int("meta.media.width");
     if (width == 0) {
         width = m_masterProducer->get_int("width");

src/timeline2/model/clipmodel.cpp

@@ -442,10 +442,11 @@ int ClipModel::getIntProperty(const QString &name) const
 QSize ClipModel::getFrameSize() const
 {
     READ_LOCK();
-    if (service()->parent().is_valid()) {
-        return QSize(service()->parent().get_int("meta.media.width"), service()->parent().get_int("meta.media.height"));
+    std::shared_ptr<ProjectClip> binClip = pCore->projectItemModel()->getClipByBinID(m_binClipId);
+    if (binClip) {
+        return binClip->getFrameSize();
     }
-    return {service()->get_int("meta.media.width"), service()->get_int("meta.media.height")};
+    return QSize();
 }
 
 double ClipModel::getDoubleProperty(const QString &name) const