diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5aff844fff1675ecf91463a642ed617e32dbc68f..edb6c4f9740ebf5f5958aaf16fd6b525f8bfea6c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -129,7 +129,13 @@ if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
         -fopenmp
     )
 elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
-    target_compile_options(Vivy PRIVATE -fopenmp)
+    target_compile_options(Vivy PRIVATE
+        -fopenmp
+        -Wno-subobject-linkage  # Kubat: Some proglems here, it seems they
+                                # occure because of the usage of "using" for
+                                # type aliasing... As I won't get ride of the
+                                # "using"s the warning is disabled
+    )
 endif()
 
 set_target_properties(Vivy PROPERTIES
diff --git a/src/Lib/AbstractMediaContext.hh b/src/Lib/AbstractMediaContext.hh
index 1e113c455eae064d9c2304f01e03341800a04563..f4a09ed6c040a96dcbea04d0b71fe2491430f727 100644
--- a/src/Lib/AbstractMediaContext.hh
+++ b/src/Lib/AbstractMediaContext.hh
@@ -42,7 +42,6 @@ static inline constexpr auto avFormatContextDeleter = [](AVFormatContext *ptr) n
 
 using AVFormatContextPtr = std::unique_ptr<AVFormatContext, decltype(avFormatContextDeleter)>;
 using AVCodecContextPtr  = std::unique_ptr<AVCodecContext, decltype(codecContexteleter)>;
-using DataPtr            = std::shared_ptr<double[]>;
 using AVFramePtr         = std::unique_ptr<AVFrame, decltype(avFrameDeleter)>;
 using SwrContextPtr      = std::unique_ptr<SwrContext, decltype(swrContenxtDeleter)>;
 
diff --git a/src/Lib/Ass/Style.cc b/src/Lib/Ass/Style.cc
index 73afcbb1e27b470e2ecbaf8028b2319d8e064a16..1a6ce05cc1658ca8169c81a338917cb37f535ba8 100644
--- a/src/Lib/Ass/Style.cc
+++ b/src/Lib/Ass/Style.cc
@@ -176,13 +176,13 @@ Style::getProperties() const noexcept
     };
 
     QJsonObject styleFontProperties{
-        { "Scale X", static_cast<const double>(scaleX) },
-        { "Scale Y", static_cast<const double>(scaleY) },
-        { "Spacing", static_cast<const double>(spacing) },
-        { "Angle", static_cast<const double>(angle) },
-        { "Border Style", static_cast<const double>(borderStyle) },
-        { "Outline", static_cast<const double>(outline) },
-        { "Shadow", static_cast<const double>(shadow) },
+        { "Scale X", static_cast<double>(scaleX) },
+        { "Scale Y", static_cast<double>(scaleY) },
+        { "Spacing", static_cast<double>(spacing) },
+        { "Angle", static_cast<double>(angle) },
+        { "Border Style", static_cast<double>(borderStyle) },
+        { "Outline", static_cast<double>(outline) },
+        { "Shadow", static_cast<double>(shadow) },
     };
 
     QJsonObject styleMargins{
diff --git a/src/Lib/Audio.hh b/src/Lib/Audio.hh
index 36cc5519ea42b5b3c73c3f655e2ed082bed4d7da..920b1033228943d2ffc2a63c435682e06a7883fe 100644
--- a/src/Lib/Audio.hh
+++ b/src/Lib/Audio.hh
@@ -65,10 +65,5 @@ public:
 
     QString getElementName() const noexcept override;
     QJsonDocument getProperties() const noexcept override;
-
-private:
-    // Regarding the format
-    using AVFormatContextPtr = std::unique_ptr<AVFormatContext, decltype(avFormatContextDeleter)>;
-    AVFormatContextPtr format{ avformat_alloc_context(), avFormatContextDeleter };
 };
 }
diff --git a/src/Lib/Document/VivyDocument.cc b/src/Lib/Document/VivyDocument.cc
index 5a6dacc576c2330cab3b35b7f9c90b711f941ab0..01f15771799f2a80fb5c6e45a705d9688ab92855 100644
--- a/src/Lib/Document/VivyDocument.cc
+++ b/src/Lib/Document/VivyDocument.cc
@@ -339,7 +339,7 @@ VivyDocument::setAudioSubDocument(const QString filename) noexcept
     QFileInfo fileInfo(filename);
     const QString baseName = fileInfo.baseName();
 
-    if (auto doc = audioDocument.get()) {
+    if ([[maybe_unused]] auto doc = audioDocument.get()) {
         // Here we may want to do some confirmation / cleanup
         audioDocument.reset();
     }
@@ -356,7 +356,7 @@ VivyDocument::setVideoSubDocument(const QString filename) noexcept
     QFileInfo fileInfo(filename);
     const QString baseName = fileInfo.baseName();
 
-    if (auto doc = videoDocument.get()) {
+    if ([[maybe_unused]] auto doc = videoDocument.get()) {
         // Here we may want to do some confirmation / cleanup
         videoDocument.reset();
     }
@@ -373,7 +373,7 @@ VivyDocument::setAssSubDocument(const QString filename) noexcept
     QFileInfo fileInfo(filename);
     const QString baseName = fileInfo.baseName();
 
-    if (auto doc = assDocument.get()) {
+    if ([[maybe_unused]] auto doc = assDocument.get()) {
         // Here we may want to do some confirmation / cleanup
         assDocument.reset();
     }
diff --git a/src/Lib/Script/CRTPLuaScriptObject.hh b/src/Lib/Script/CRTPLuaScriptObject.hh
index eed3eb57baa96e15460b99e62475e96995d02cd5..3a5a51e7477de51cd507d6afe569d9f0e9f172b9 100644
--- a/src/Lib/Script/CRTPLuaScriptObject.hh
+++ b/src/Lib/Script/CRTPLuaScriptObject.hh
@@ -70,11 +70,7 @@ protected:
     {
         luaL_checktype(L, tblIndex, LUA_TTABLE);
         const std::size_t count = lua_rawlen(L, tblIndex);
-        if (count >= std::numeric_limits<int>::max())
-            luaL_error(L, "To many items (%lu) in table to iterate over!", count);
-
-        const int countInt = static_cast<const int>(count);
-        for (int i = 1; i <= countInt; ++i) {
+        for (int i = 1; std::cmp_less(i, count); ++i) {
             luaL_checktype(L, tblIndex, LUA_TTABLE);
             lua_pushinteger(L, i);     // i -> top stack
             lua_gettable(L, tblIndex); // T[i] -> top stack and pop i
diff --git a/src/UI/MainWindow.cc b/src/UI/MainWindow.cc
index f4f1d71f9f9191f72185b1c243d31d7f05ea97f0..01ebb7bcea828edeb701ef4a269394d0d66a4e1c 100644
--- a/src/UI/MainWindow.cc
+++ b/src/UI/MainWindow.cc
@@ -175,7 +175,7 @@ MainWindow::updateFakeVimUsage(bool yes) noexcept
             documentExists && (docView->getDocument()->getType() == AbstractDocument::Type::Script);
 
         if (isScriptEditor)
-            static_cast<ScriptDocumentView *const>(docView)->setUseFakeVimEditor(yes);
+            static_cast<ScriptDocumentView *>(docView)->setUseFakeVimEditor(yes);
     }
 }
 
diff --git a/src/UI/ScriptViews/ScriptHighlighter.cc b/src/UI/ScriptViews/ScriptHighlighter.cc
index 564ea25aeff23b5ced99fe4603faabeac3c423ec..2baf555a1ac8e625e4f3e6b4c87546ef4b9b6265 100644
--- a/src/UI/ScriptViews/ScriptHighlighter.cc
+++ b/src/UI/ScriptViews/ScriptHighlighter.cc
@@ -100,7 +100,7 @@ ScriptHighlighter::previousBlockState() noexcept
         state != Utils::toUnderlying(BlockState::Comment))
         return BlockState::None;
 
-    return static_cast<const BlockState>(state);
+    return static_cast<BlockState>(state);
 }
 
 void