diff --git a/internal/capture/broadcast.go b/internal/capture/broadcast.go
index bb6d27be..4e860f03 100644
--- a/internal/capture/broadcast.go
+++ b/internal/capture/broadcast.go
@@ -44,8 +44,14 @@ func broadcastNew(pipelineStr string) *BroacastManagerCtx {
 		pipelinesCounter: promauto.NewCounter(prometheus.CounterOpts{
 			Name:      "pipelines_total",
 			Namespace: "neko",
-			Subsystem: "capture_broadcast",
+			Subsystem: "capture",
 			Help:      "Total number of created pipelines.",
+			ConstLabels: map[string]string{
+				"submodule":  "broadcast",
+				"video_id":   "main",
+				"codec_name": "-",
+				"codec_type": "-",
+			},
 		}),
 	}
 }
diff --git a/internal/capture/screencast.go b/internal/capture/screencast.go
index d6b815a4..a8314d31 100644
--- a/internal/capture/screencast.go
+++ b/internal/capture/screencast.go
@@ -55,16 +55,22 @@ func screencastNew(enabled bool, pipelineStr string) *ScreencastManagerCtx {
 
 		// metrics
 		imagesCounter: promauto.NewCounter(prometheus.CounterOpts{
-			Name:      "images_total",
+			Name:      "screencast_images_total",
 			Namespace: "neko",
-			Subsystem: "capture_screencast",
+			Subsystem: "capture",
 			Help:      "Total number of created images.",
 		}),
 		pipelinesCounter: promauto.NewCounter(prometheus.CounterOpts{
 			Name:      "pipelines_total",
 			Namespace: "neko",
-			Subsystem: "capture_screencast",
+			Subsystem: "capture",
 			Help:      "Total number of created pipelines.",
+			ConstLabels: map[string]string{
+				"submodule":  "screencast",
+				"video_id":   "main",
+				"codec_name": "-",
+				"codec_type": "-",
+			},
 		}),
 	}
 
diff --git a/internal/capture/streamsink.go b/internal/capture/streamsink.go
index 8b1faad4..8de12b9b 100644
--- a/internal/capture/streamsink.go
+++ b/internal/capture/streamsink.go
@@ -50,23 +50,26 @@ func streamSinkNew(codec codec.RTPCodec, pipelineStr func() string, video_id str
 
 		// metrics
 		currentListeners: promauto.NewGauge(prometheus.GaugeOpts{
-			Name:      "listeners",
+			Name:      "streamsink_listeners",
 			Namespace: "neko",
-			Subsystem: "capture_streamsink",
+			Subsystem: "capture",
 			Help:      "Current number of listeners for a pipeline.",
 			ConstLabels: map[string]string{
-				"video_id": video_id,
-				"codec":    codec.Name,
+				"video_id":   video_id,
+				"codec_name": codec.Name,
+				"codec_type": codec.Type.String(),
 			},
 		}),
 		pipelinesCounter: promauto.NewCounter(prometheus.CounterOpts{
 			Name:      "pipelines_total",
 			Namespace: "neko",
-			Subsystem: "capture_streamsink",
+			Subsystem: "capture",
 			Help:      "Total number of created pipelines.",
 			ConstLabels: map[string]string{
-				"video_id": video_id,
-				"codec":    codec.Name,
+				"submodule":  "streamsink",
+				"video_id":   video_id,
+				"codec_name": codec.Name,
+				"codec_type": codec.Type.String(),
 			},
 		}),
 	}
diff --git a/internal/capture/streamsrc.go b/internal/capture/streamsrc.go
index c6583670..fbf4303a 100644
--- a/internal/capture/streamsrc.go
+++ b/internal/capture/streamsrc.go
@@ -37,25 +37,36 @@ func streamSrcNew(enabled bool, codecPipeline map[string]string, video_id string
 
 	pushedData := map[string]prometheus.Summary{}
 	pipelinesCounter := map[string]prometheus.Counter{}
-	for codec := range codecPipeline {
-		pushedData[codec] = promauto.NewSummary(prometheus.SummaryOpts{
-			Name:      "data_bytes",
+	for codecName, pipeline := range codecPipeline {
+		codec, ok := codec.ParseStr(codecName)
+		if !ok {
+			logger.Fatal().
+				Str("codec", codecName).
+				Str("pipeline", pipeline).
+				Msg("unknown codec name")
+		}
+
+		pushedData[codecName] = promauto.NewSummary(prometheus.SummaryOpts{
+			Name:      "streamsrc_data_bytes",
 			Namespace: "neko",
-			Subsystem: "capture_streamsrc",
+			Subsystem: "capture",
 			Help:      "Data pushed to a pipeline (in bytes).",
 			ConstLabels: map[string]string{
-				"video_id": video_id,
-				"codec":    codec,
+				"video_id":   video_id,
+				"codec_name": codec.Name,
+				"codec_type": codec.Type.String(),
 			},
 		})
-		pipelinesCounter[codec] = promauto.NewCounter(prometheus.CounterOpts{
+		pipelinesCounter[codecName] = promauto.NewCounter(prometheus.CounterOpts{
 			Name:      "pipelines_total",
 			Namespace: "neko",
-			Subsystem: "capture_streamsrc",
+			Subsystem: "capture",
 			Help:      "Total number of created pipelines.",
 			ConstLabels: map[string]string{
-				"video_id": video_id,
-				"codec":    codec,
+				"submodule":  "streamsrc",
+				"video_id":   video_id,
+				"codec_name": codec.Name,
+				"codec_type": codec.Type.String(),
 			},
 		})
 	}