1 files changed, 7 insertions, 0 deletions
diff --git a/src/gsttools/qgstutils.cpp b/src/gsttools/qgstutils.cpp
index 1281d3fc5..465f43989 100644
--- a/src/gsttools/qgstutils.cpp
+++ b/src/gsttools/qgstutils.cpp
@@ -41,6 +41,7 @@
 #include <QtCore/qset.h>
 #include <QtCore/qstringlist.h>
 #include <qaudioformat.h>
+#include <QtCore/qelapsedtimer.h>
 
 #ifdef USE_V4L
 #  include <private/qcore_unix_p.h>
@@ -411,6 +412,10 @@ Q_GLOBAL_STATIC(FactoryCameraInfoMap, qt_camera_device_info);
 
 QVector<QGstUtils::CameraInfo> QGstUtils::enumerateCameras(GstElementFactory *factory)
 {
+    static QElapsedTimer camerasCacheAgeTimer;
+    if (camerasCacheAgeTimer.isValid() && camerasCacheAgeTimer.elapsed() > 500) // ms
+        qt_camera_device_info()->clear();
+
     FactoryCameraInfoMap::const_iterator it = qt_camera_device_info()->constFind(factory);
     if (it != qt_camera_device_info()->constEnd())
         return *it;
@@ -469,6 +474,7 @@ QVector<QGstUtils::CameraInfo> QGstUtils::enumerateCameras(GstElementFactory *fa
         }
 
         if (!devices.isEmpty() || !hasVideoSource) {
+            camerasCacheAgeTimer.restart();
             return devices;
         }
     }
@@ -527,6 +533,7 @@ QVector<QGstUtils::CameraInfo> QGstUtils::enumerateCameras(GstElementFactory *fa
         }
         qt_safe_close(fd);
     }
+    camerasCacheAgeTimer.restart();
 #endif // USE_V4L
 
     return devices;