diff --git a/event/stream/topics.go b/event/stream/topics.go
index 9071dad..552c132 100644
--- a/event/stream/topics.go
+++ b/event/stream/topics.go
@@ -79,10 +79,12 @@ var topicRules = []struct {
 	// https://developer.axis.com/vapix/network-video/event-and-action-services/
 	{"MotionRegionDetector/Motion", KindMotion},
 
-	// AXIS Guard suite — vendor analytics apps with Camera<N>Profile<ID>
-	// suffixes. Treated as motion so they can drive motion-triggered
-	// recording on cameras using these apps instead of basic VMD.
+	// AXIS ACAP motion apps with Camera<N>Profile<ID> suffixes. VMD is
+	// the stock app shipped on the camera; the Guard suite are the
+	// paid analytics products. Prefix-match because of the suffix.
+	// https://developer.axis.com/vapix/applications/vmd4
 	// https://developer.axis.com/vapix/applications/motion-guard
+	{"CameraApplicationPlatform/VMD/", KindMotion},
 	{"CameraApplicationPlatform/MotionGuard/", KindMotion},
 	{"CameraApplicationPlatform/FenceGuard/", KindMotion},
 	{"CameraApplicationPlatform/LoiteringGuard/", KindMotion},
diff --git a/event/stream/topics_test.go b/event/stream/topics_test.go
index 2bc2a34..617bf5b 100644
--- a/event/stream/topics_test.go
+++ b/event/stream/topics_test.go
@@ -25,6 +25,12 @@ func TestClassifyTopic(t *testing.T) {
 		{"axis_fence_guard", "tnsaxis:CameraApplicationPlatform/FenceGuard/Camera1ProfileANY", KindMotion},
 		{"axis_loitering_guard", "tnsaxis:CameraApplicationPlatform/LoiteringGuard/Camera1ProfileANY", KindMotion},
 
+		// AXIS VMD 4 — the stock motion app, and the one an installer
+		// reaches for before any Guard product. The profile suffix
+		// varies with the configured VMD profile.
+		{"axis_vmd4_profile_any", "tnsaxis:CameraApplicationPlatform/VMD/Camera1ProfileANY", KindMotion},
+		{"axis_vmd4_profile_numbered", "tnsaxis:CameraApplicationPlatform/VMD/Camera1Profile1", KindMotion},
+
 		// --- Tampering --------------------------------------------------
 
 		{"tamper_detector", "tns1:RuleEngine/TamperDetector/Tamper", KindTampering},