diff --git a/include/video.h b/include/video.h
index f14fb15..5ac1387 100644
--- a/include/video.h
+++ b/include/video.h
@@ -276,6 +276,13 @@
 
 #endif
 
+/**
+ * video_is_active() - Test if one video device it active
+ *
+ * @return true if at least one video device is active, else false.
+ */
+bool video_is_active(void);
+
 #ifndef CONFIG_DM_VIDEO
 
 /* Video functions */