diff --git a/voctocore/lib/sources/v4l2source.py b/voctocore/lib/sources/v4l2source.py
index 9fd9a614..4dae2610 100644
--- a/voctocore/lib/sources/v4l2source.py
+++ b/voctocore/lib/sources/v4l2source.py
@@ -83,6 +83,10 @@ def build_source(self):
             ! videoconvert
             ! videoscale
             ! videorate
+            """
+        pipe = f'fallbacksrc source="{pipe}"'
+
+        pipe += """\
                 name=vout-{name}
         """.format(name=self.name)