Fix freeze on memory usage loading invalid clips

src/jobs/audiothumbjob.cpp

@@ -351,7 +351,12 @@ bool AudioThumbJob::startJob()
     }
     m_lengthInFrames = m_prod->get_length(); // Multiply this if we want more than 1 sample per frame
     int thumbResolution = 3000;
-    
+    if (m_lengthInFrames == INT_MAX) {
+        // This is a broken file or live feed, don't attempt to generate audio thumbnails
+        m_done = true;
+        m_successful = false;
+        return false;
+    }
     // Increase audio thumb resolution for longer clips to get a better resolution
     if (m_lengthInFrames > 10000) {
         // More than 10 minutes at 25fps
@@ -363,7 +368,6 @@ bool AudioThumbJob::startJob()
         }
     }
     m_thumbSize = QSize(thumbResolution, 1000 / pCore->getCurrentDar());
-
     m_frequency = m_binClip->audioInfo()->samplingRate();
     m_frequency = m_frequency <= 0 ? 48000 : m_frequency;
 

src/jobs/loadjob.cpp

@@ -411,6 +411,19 @@ bool LoadJob::startJob()
         m_errorMessage.append(i18n("ERROR: Could not load clip %1: producer is invalid", m_resource));
         return false;
     }
+    if (m_producer->get_length() == INT_MAX && m_producer->get("eof") == QLatin1String("loop")) {
+        // This is a live source or broken clip
+        m_done = true;
+        m_successful = false;
+        if (m_producer) {
+            m_producer.reset();
+        }
+        qDebug()<<"=== MAX DURATION: "<<INT_MAX<<", DURATION: "<<(INT_MAX / 25 / 60);
+        QMetaObject::invokeMethod(pCore.get(), "displayBinMessage", Qt::QueuedConnection, Q_ARG(QString, i18n("Cannot get duration for file %1", m_resource)),
+                                  Q_ARG(int, (int)KMessageWidget::Warning));
+        m_errorMessage.append(i18n("ERROR: Could not load clip %1: producer is invalid", m_resource));
+        return false;
+    }
     processProducerProperties(m_producer, m_xml);
     QString clipName = Xml::getXmlProperty(m_xml, QStringLiteral("kdenlive:clipname"));
     if (clipName.isEmpty()) {