Workaround crash playing remote files in MLT 6.26.0

src/mainwindow.cpp

@@ -76,6 +76,8 @@
 #include "dialogs/textbasededit.h"
 #include "project/dialogs/temporarydata.h"
 
+#include <framework/mlt_version.h>
+
 #ifdef USE_JOGSHUTTLE
 #include "jogshuttle/jogmanager.h"
 #endif
@@ -101,6 +103,7 @@
 #include <kns3/knewstuffaction.h>
 #include <ktogglefullscreenaction.h>
 #include <kwidgetsaddons_version.h>
+#include <KRun>
 
 #include "kdenlive_debug.h"
 #include <QAction>
@@ -355,9 +358,14 @@ void MainWindow::init(const QString &mltPath)
     auto *onlineResources = new ResourceWidget(this);
     m_onlineResourcesDock = addDock(i18n("Online Resources"), QStringLiteral("onlineresources"), onlineResources);
     connect(onlineResources, &ResourceWidget::previewClip, [&](const QString &path, const QString &title) {
+    qDebug()<<"MLT VER: "<<LIBMLT_VERSION_INT<<"; QTVER: "<<QT_VERSION_CHECK(6,26,0);
+#if LIBMLT_VERSION_INT == QT_VERSION_CHECK(6,26,0)
+        new KRun(QUrl(path), this);
+#else
         m_clipMonitor->slotPreviewResource(path, title);
         m_clipMonitorDock->show();
         m_clipMonitorDock->raise();
+#endif
     });
 
     connect(onlineResources, &ResourceWidget::addClip, this, &MainWindow::slotAddProjectClip);

src/monitor/glwidget.cpp

@@ -884,6 +884,10 @@ int GLWidget::setProducer(const QString &file)
         m_producer.reset();
     }
     m_producer = std::make_shared<Mlt::Producer>(new Mlt::Producer(pCore->getCurrentProfile()->profile(), nullptr, file.toUtf8().constData()));
+    if (!m_producer && !m_producer->is_valid()) {
+        m_producer.reset();
+        m_producer = m_blackClip;
+    }
     if (m_consumer) {
         //m_consumer->stop();
         if (!m_consumer->is_stopped()) {

src/monitor/monitor.cpp

@@ -1736,7 +1736,6 @@ void Monitor::slotPreviewResource(const QString &path, const QString &title)
     slotOpenClip(nullptr);
     m_streamAction->setVisible(false);
     m_glMonitor->setProducer(path);
-    m_glMonitor->producer();
     m_timePos->setRange(0, m_glMonitor->producer()->get_length() - 1);
     m_glMonitor->getControllerProxy()->setClipProperties(-1, ClipType::Unknown, false, title);
     m_glMonitor->setRulerInfo(m_glMonitor->producer()->get_length() - 1);