Fix default timeline preview profile not correctly remembered

src/dialogs/encodingprofilesdialog.cpp

@@ -331,6 +331,7 @@ EncodingTimelinePreviewProfilesChooser::EncodingTimelinePreviewProfilesChooser(Q
         }
     }
     connect(m_profilesCombo, &KComboBox::currentIndexChanged, m_messageWidget, &KMessageWidget::hide);
+    connect(m_profilesCombo, &KComboBox::currentIndexChanged, this, &EncodingTimelinePreviewProfilesChooser::currentIndexChanged);
 }
 
 void EncodingTimelinePreviewProfilesChooser::loadEncodingProfiles()
@@ -394,13 +395,12 @@ void EncodingTimelinePreviewProfilesChooser::filterPreviewProfiles(const QString
             // This profile has a hardcoded framerate, chack if same as project
             fps = fpsString.toDouble();
         }
+        QStandardItem *item = model->item(i);
         if (fps > 0. && qAbs(fps - projectFps) > 0.01) {
             // Fps does not match, disable
-            QStandardItem *item = model->item(i);
             item->setFlags(item->flags() & ~Qt::ItemIsEnabled);
             continue;
         }
-        QStandardItem *item = model->item(i);
         item->setFlags(item->flags() | Qt::ItemIsEnabled);
     }
     QStandardItem *item = model->item(current);

src/dialogs/encodingprofilesdialog.h

@@ -89,4 +89,7 @@ public:
 
 private slots:
     void loadEncodingProfiles() override;
+
+signals:
+    void currentIndexChanged();
 };

src/dialogs/kdenlivesettingsdialog.cpp

@@ -260,7 +260,8 @@ void KdenliveSettingsDialog::initProjectPage()
     QWidget *p8 = new QWidget;
     m_configProject.setupUi(p8);
     // Timeline preview
-    m_tlPreviewProfiles = new EncodingTimelinePreviewProfilesChooser(p8, true, QStringLiteral("preview_profile"), true);
+    QString currentPreviewData = QString("%1;%2").arg(KdenliveSettings::previewparams(), KdenliveSettings::previewextension());
+    m_tlPreviewProfiles = new EncodingTimelinePreviewProfilesChooser(p8, true, currentPreviewData, false);
     m_configProject.preview_profile_box->addWidget(m_tlPreviewProfiles);
     auto *vbox = new QVBoxLayout;
     m_pw = new ProfileWidget(this);
@@ -271,6 +272,7 @@ void KdenliveSettingsDialog::initProjectPage()
     // Select profile
     m_pw->loadProfile(KdenliveSettings::default_profile().isEmpty() ? pCore->getCurrentProfile()->path() : KdenliveSettings::default_profile());
     m_tlPreviewProfiles->filterPreviewProfiles(m_pw->selectedProfile());
+    connect(m_tlPreviewProfiles, &EncodingTimelinePreviewProfilesChooser::currentIndexChanged, this, &KdenliveSettingsDialog::slotDialogModified);
     connect(m_pw, &ProfileWidget::profileChanged, this, &KdenliveSettingsDialog::slotDialogModified);
     m_configProject.projecturl->setMode(KFile::Directory);
     m_configProject.projecturl->setUrl(QUrl::fromLocalFile(KdenliveSettings::defaultprojectfolder()));