diff --git a/src/Mixer.cpp b/src/Mixer.cpp
index e522676..0fbd2c4 100644
--- a/src/Mixer.cpp
+++ b/src/Mixer.cpp
@@ -220,13 +220,13 @@ void Mixer::update()
         SourceListUnique _failedsources = session_->failedSources();
         for(auto it = _failedsources.begin(); it != _failedsources.end(); ++it)  {
 
+            // intervention depends on the severity of the failure
+            Source::Failure fail = (*it)->failed();
+
             // only deal with sources that are still attached to mixer
             if ( attached( *it ) ) {
 
-                // intervention depends on the severity of the failure
-                Source::Failure fail = (*it)->failed();
-
-                // Attempt to repair BAD failed sources
+                // RETRY: Attempt to repair failed sources
                 // (can be automatically repaired without user intervention)
                 if (fail == Source::FAIL_RETRY) {
                     if ( !recreateSource( *it ) ) {
@@ -249,6 +249,15 @@ void Mixer::update()
                 // needs refresh after intervention
                 ++View::need_deep_update_;
             }
+            // Source failed, was detached (after FAIL_CRITICAL) and got back to state FAIL_NONE
+            else if ( fail < Source::FAIL_CRITICAL ) {
+                // This looks like we should try to recreate it
+                if ( !recreateSource( *it ) ) {
+                    Log::Warning("Source '%s' definitely failed and could not be fixed.", (*it)->name().c_str());
+                    // delete failed source if could not recreate it
+                    deleteSource( *it );
+                }
+            }
         }
     }
 
diff --git a/src/UserInterfaceManager.cpp b/src/UserInterfaceManager.cpp
index acc13c7..0599181 100644
--- a/src/UserInterfaceManager.cpp
+++ b/src/UserInterfaceManager.cpp
@@ -3638,6 +3638,8 @@ void Navigator::RenderNewPannel()
                     ImGui::TextDisabled("Explore online");
                     if (ImGui::Selectable( ICON_FA_EXTERNAL_LINK_ALT " Documentation" ) )
                         SystemToolkit::open("https://gstreamer.freedesktop.org/documentation/tools/gst-launch.html?gi-language=c#pipeline-description");
+                    if (ImGui::Selectable( ICON_FA_EXTERNAL_LINK_ALT " Video test source" ) )
+                         SystemToolkit::open("https://gstreamer.freedesktop.org/documentation/videotestsrc/index.html?gi-language=c#videotestsrc-page");
                     ImGui::EndCombo();
                 }
                 ImGui::SetCursorPos(pos_bot);