diff --git a/mythtv/libs/libmythtv/io/mythinteractivebuffer.cpp b/mythtv/libs/libmythtv/io/mythinteractivebuffer.cpp
@@ -17,7 +17,7 @@ MythInteractiveBuffer::MythInteractiveBuffer(const QString &Url, MythMediaBuffer
     m_parent(Parent)
 {
     m_startReadAhead = true;
-    OpenFile(Url);
+    MythInteractiveBuffer::OpenFile(Url);
 }
 
 MythInteractiveBuffer::~MythInteractiveBuffer()

diff --git a/mythtv/libs/libmythtv/mheg/interactivescreen.cpp b/mythtv/libs/libmythtv/mheg/interactivescreen.cpp
@@ -3,7 +3,7 @@
 InteractiveScreen::InteractiveScreen(MythPlayer *player,
                                      const QString &name) :
     MythScreenType((MythScreenType*)nullptr, name),
-    m_player(player),  m_safeArea(QRect())
+    m_player(player)
 {
     UpdateArea();
 }

diff --git a/mythtv/libs/libmythtv/mpeg/dvbstreamdata.cpp b/mythtv/libs/libmythtv/mpeg/dvbstreamdata.cpp
@@ -32,7 +32,7 @@ DVBStreamData::DVBStreamData(uint desired_netid,  uint desired_tsid,
 
 DVBStreamData::~DVBStreamData()
 {
-    Reset(m_desiredNetId, m_desiredTsId, m_desiredProgram);
+    DVBStreamData::Reset(m_desiredNetId, m_desiredTsId, m_desiredProgram);
 
     QMutexLocker locker(&m_listenerLock);
     m_dvbMainListeners.clear();

diff --git a/mythtv/libs/libmythtv/mythplayer.h b/mythtv/libs/libmythtv/mythplayer.h
@@ -2,6 +2,7 @@
 #define MYTHPLAYER_H
 
 #include <cstdint>
+#include <utility>
 
 #include <QCoreApplication>
 #include <QList>
@@ -136,7 +137,7 @@ class DecoderCallback
   public:
     using Callback = void (*)(void*, void*, void*);
     DecoderCallback() = default;
-    DecoderCallback(const QString &Debug, Callback Function, QAtomicInt *Ready,
+    DecoderCallback(QString Debug, Callback Function, QAtomicInt *Ready,
                     void *Opaque1, void *Opaque2, void *Opaque3)
       : m_debug(std::move(Debug)),
         m_function(Function),

diff --git a/mythtv/libs/libmythtv/mythvideooutnull.cpp b/mythtv/libs/libmythtv/mythvideooutnull.cpp
@@ -223,7 +223,7 @@ void MythVideoOutputNull::Show(FrameScanType  /*scan*/)
 {
 }
 
-void MythVideoOutputNull::UpdatePauseFrame(int64_t &disp_timecode, FrameScanType)
+void MythVideoOutputNull::UpdatePauseFrame(int64_t &disp_timecode, FrameScanType /*Scan*/)
 {
     QMutexLocker locker(&m_globalLock);
 

diff --git a/mythtv/libs/libmythtv/opengl/mythopengltonemap.cpp b/mythtv/libs/libmythtv/opengl/mythopengltonemap.cpp
@@ -22,7 +22,6 @@
 #endif
 
 MythOpenGLTonemap::MythOpenGLTonemap(MythRenderOpenGL *Render, VideoColourSpace *ColourSpace)
-  : QObject()
 {
     if (Render)
     {

diff --git a/mythtv/libs/libmythtv/opengl/mythopenglvideo.cpp b/mythtv/libs/libmythtv/opengl/mythopenglvideo.cpp
@@ -184,7 +184,7 @@ void MythOpenGLVideo::CleanupDeinterlacers(void)
         if ((m_inputType == FMT_YV12) && (m_profile == "opengl"))
             m_outputType = FMT_YUY2;
         SetupFrameFormat(m_inputType, m_outputType, m_videoDim, m_textureTarget);
-        emit OutputChanged(m_videoDim, m_videoDim, -1.0f);
+        emit OutputChanged(m_videoDim, m_videoDim, -1.0F);
     }
     m_fallbackDeinterlacer = DEINT_NONE;
     m_deinterlacer = DEINT_NONE;

diff --git a/mythtv/libs/libmythtv/recorders/ExternalChannel.cpp b/mythtv/libs/libmythtv/recorders/ExternalChannel.cpp
@@ -155,7 +155,7 @@ uint ExternalChannel::GetTuneStatus(void)
         .arg(m_systemStatus));
 
     QString result;
-    int     ret;
+    int     ret = 0;
 
     if (!m_streamHandler->ProcessCommand("TuneStatus?", result))
     {

diff --git a/mythtv/libs/libmythtv/videodbcheck.cpp b/mythtv/libs/libmythtv/videodbcheck.cpp
@@ -657,6 +657,7 @@ bool doUpgradeVideoDatabaseSchema(void)
     if (dbver == "1032")
     {
         DBUpdates updates {
+            // NOLINTNEXTLINE(bugprone-suspicious-missing-comma)
             "CREATE TEMPORARY TABLE bad_videometadatacast"
             "       AS SELECT * FROM videometadatacast,",
             "CREATE TEMPORARY TABLE bad_videometadatagenre"

diff --git a/mythtv/libs/libmythtv/videodisplayprofile.h b/mythtv/libs/libmythtv/videodisplayprofile.h
@@ -120,7 +120,7 @@ class MTV_PUBLIC VideoDisplayProfile
   private:
     vector<ProfileItem>::const_iterator
             FindMatch(const QSize &Size, float Framerate, const QString &CodecName,
-                      const QStringList DisallowedDecoders = QStringList());
+                      QStringList DisallowedDecoders = QStringList());
     void    LoadBestPreferences(const QSize &Size, float Framerate, const QString &CodecName,
                                 const QStringList &DisallowedDecoders = QStringList());
     QString GetPreference(const QString &Key) const;

diff --git a/mythtv/libs/libmythui/mythmainwindow.cpp b/mythtv/libs/libmythui/mythmainwindow.cpp
@@ -129,10 +129,7 @@ struct MPData {
 class MythMainWindowPrivate
 {
   public:
-    MythMainWindowPrivate() :
-        m_gesture(MythGesture())
-    {
-    }
+    MythMainWindowPrivate() = default;
 
     static int TranslateKeyNum(QKeyEvent *e);
 

diff --git a/mythtv/libs/libmythui/mythuiwebbrowser.cpp b/mythtv/libs/libmythui/mythuiwebbrowser.cpp
@@ -836,12 +836,11 @@ QWebView *MythWebView::createWindow(QWebPage::WebWindowType /* type */)
 MythUIWebBrowser::MythUIWebBrowser(MythUIType *parent, const QString &name)
                  : MythUIType(parent, name),
       m_parentScreen(nullptr),
-      m_browser(nullptr),    m_browserArea(MythRect()),
-      m_actualBrowserArea(MythRect()), m_image(nullptr),
+      m_browser(nullptr),    m_image(nullptr),
       m_active(false),       m_wasActive(false),
       m_initialized(false),
       m_updateInterval(0),   m_zoom(1.0),
-      m_bgColor("White"),    m_widgetUrl(QUrl()), m_userCssFile(""),
+      m_bgColor("White"),    m_userCssFile(""),
       m_defaultSaveDir(GetConfDir() + "/MythBrowser/"),
       m_defaultSaveFilename(""),
       m_inputToggled(false), m_lastMouseAction(""),

diff --git a/mythtv/libs/libmythui/opengl/mythrenderopengl.cpp b/mythtv/libs/libmythui/opengl/mythrenderopengl.cpp
@@ -147,7 +147,7 @@ MythRenderOpenGL::~MythRenderOpenGL()
         return;
     disconnect(this, &QOpenGLContext::aboutToBeDestroyed, this, &MythRenderOpenGL::contextToBeDestroyed);
     if (m_ready)
-        ReleaseResources();
+        MythRenderOpenGL::ReleaseResources();
 }
 
 void MythRenderOpenGL::messageLogged(const QOpenGLDebugMessage &Message)

diff --git a/mythtv/libs/libmythui/screensaver-dbus.cpp b/mythtv/libs/libmythui/screensaver-dbus.cpp
@@ -118,8 +118,7 @@ class ScreenSaverDBusPrivate
 };
 
 ScreenSaverDBus::ScreenSaverDBus() :
-    m_bus(QDBusConnection::sessionBus()),
-    m_dbusPrivateInterfaces(QList<ScreenSaverDBusPrivate *>())
+    m_bus(QDBusConnection::sessionBus())
 {
     // service, path, interface, bus - note that interface = service, hence it is used twice
     for (uint i=0; i < NUM_DBUS_METHODS; i++) {

diff --git a/mythtv/libs/libmythui/screensaver.cpp b/mythtv/libs/libmythui/screensaver.cpp
@@ -23,8 +23,7 @@
 QEvent::Type ScreenSaverEvent::kEventType =
     static_cast<QEvent::Type>(QEvent::registerEventType());
 
-ScreenSaverControl::ScreenSaverControl() :
-    m_screenSavers(QList<ScreenSaver *>())
+ScreenSaverControl::ScreenSaverControl()
 {
 #if defined(USING_DBUS)
     m_screenSavers.push_back(new ScreenSaverDBus());

diff --git a/mythtv/programs/mythbackend/scheduler.cpp b/mythtv/programs/mythbackend/scheduler.cpp
@@ -63,8 +63,6 @@ Scheduler::Scheduler(bool runthread, QMap<int, EncoderLink *> *tvList,
     m_specSched(master_sched),
     m_tvList(tvList),
     m_doRun(runthread),
-    m_livetvTime(QDateTime()),
-    m_lastPrepareTime(QDateTime()),
     m_openEnd(openEndNever)
 {
     char *debug = getenv("DEBUG_CONFLICTS");

diff --git a/mythtv/programs/mythexternrecorder/MythExternRecApp.cpp b/mythtv/programs/mythexternrecorder/MythExternRecApp.cpp
@@ -178,7 +178,7 @@ bool MythExternRecApp::Open(void)
     return true;
 }
 
-void MythExternRecApp::TerminateProcess(QProcess & proc, const QString & desc)
+void MythExternRecApp::TerminateProcess(QProcess & proc, const QString & desc) const
 {
     if (proc.state() == QProcess::Running)
     {
@@ -201,8 +201,6 @@ void MythExternRecApp::TerminateProcess(QProcess & proc, const QString & desc)
         proc.kill();
         proc.waitForFinished();
     }
-
-    return;
 }
 
 Q_SLOT void MythExternRecApp::Close(void)

diff --git a/mythtv/programs/mythexternrecorder/MythExternRecApp.h b/mythtv/programs/mythexternrecorder/MythExternRecApp.h
@@ -81,7 +81,7 @@ class MythExternRecApp : public QObject
 
   protected:
     void GetChannel(const QString & serial, const QString & func);
-    void TerminateProcess(QProcess & proc, const QString & desc);
+    void TerminateProcess(QProcess & proc, const QString & desc) const;
 
   private:
     bool config(void);

diff --git a/mythtv/programs/mythfilldatabase/xmltvparser.cpp b/mythtv/programs/mythfilldatabase/xmltvparser.cpp
@@ -296,7 +296,10 @@ bool XMLTVParser::parseFile(
                     return false;
                 }
 
-                QString programid, season, episode, totalepisodes;
+                QString programid;
+                QString season;
+                QString episode;
+                QString totalepisodes;
                 auto *pginfo = new ProgInfo();
 
                 QString text = xml.attributes().value("start").toString();
@@ -328,7 +331,7 @@ bool XMLTVParser::parseFile(
                     {
                         QString text2=xml.readElementText(QXmlStreamReader::SkipChildElements);
                         if (xml.attributes().value("lang").toString() == "ja_JP")
-                        {
+                        { // NOLINT(bugprone-branch-clone)
                             pginfo->m_title = text2;
                         }
                         else if (xml.attributes().value("lang").toString() == "ja_JP@kana")

diff --git a/mythtv/programs/mythfrontend/upnpscanner.cpp b/mythtv/programs/mythfrontend/upnpscanner.cpp
@@ -81,15 +81,13 @@ class MediaServer : public MediaServerItem
   public:
     MediaServer()
      : MediaServerItem(QString("0"), QString(), QString(), QString()),
-       m_controlURL(QUrl()),
-       m_eventSubURL(QUrl()), m_eventSubPath(QString()),
+       m_eventSubPath(QString()),
        m_friendlyName(QString("Unknown"))
     {
     }
     explicit MediaServer(QUrl URL)
      : MediaServerItem(QString("0"), QString(), QString(), QString()),
-       m_url(std::move(URL)), m_controlURL(QUrl()),
-       m_eventSubURL(QUrl()), m_eventSubPath(QString()),
+       m_url(std::move(URL)), m_eventSubPath(QString()),
        m_friendlyName(QString("Unknown"))
     {
     }

diff --git a/mythtv/programs/mythmetadatalookup/lookup.cpp b/mythtv/programs/mythmetadatalookup/lookup.cpp
@@ -14,8 +14,7 @@
 
 #include "metadataimagehelper.h"
 
-LookerUpper::LookerUpper() :
-    m_busyRecList(QList<ProgramInfo*>())
+LookerUpper::LookerUpper()
 {
     m_metadataFactory = new MetadataFactory(this);
 }
-Original file line number
+Diff line change
@@ Expand Up / @@ -223,7 +223,7 @@ void MythVideoOutputNull::Show(FrameScanType /*scan*/) @@
     {
     }
-    void MythVideoOutputNull::UpdatePauseFrame(int64_t &disp_timecode, FrameScanType)
+    void MythVideoOutputNull::UpdatePauseFrame(int64_t &disp_timecode, FrameScanType /*Scan*/)
     {
         QMutexLocker locker(&m_globalLock);
@@ Expand Down @@