diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f5bac054..f557463a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,11 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unrelease]
 
+### Added
+
+- Added `send_initial_empty_metrics` flag to `PipelineParams` to request for
+  initial empty metrics (zero values). True by default.
+
 ### Fixed
 
+- Fixed initial metrics format. It was using the wrong keys name/time instead of
+  processor/value.
+
 - STT services should be using ISO 8601 time format for transcription frames.
 
-- Fix an issue that would cause Daily transport to show a stop transcription
+- Fixed an issue that would cause Daily transport to show a stop transcription
   error when actually none occurred.
 
 ## [0.0.37] - 2024-07-22
diff --git a/src/pipecat/pipeline/pipeline.py b/src/pipecat/pipeline/pipeline.py
index 165717ad3..6805cfad0 100644
--- a/src/pipecat/pipeline/pipeline.py
+++ b/src/pipecat/pipeline/pipeline.py
@@ -64,7 +64,7 @@ def processors_with_metrics(self):
         services = []
         for p in self._processors:
             if isinstance(p, BasePipeline):
-                services += p.processors_with_metrics()
+                services.extend(p.processors_with_metrics())
             elif p.can_generate_metrics():
                 services.append(p)
         return services
diff --git a/src/pipecat/pipeline/task.py b/src/pipecat/pipeline/task.py
index 3424aac86..9f45f33ea 100644
--- a/src/pipecat/pipeline/task.py
+++ b/src/pipecat/pipeline/task.py
@@ -21,6 +21,7 @@
 class PipelineParams(BaseModel):
     allow_interruptions: bool = False
     enable_metrics: bool = False
+    send_initial_empty_metrics: bool = True
     report_only_initial_ttfb: bool = False
 
 
@@ -95,8 +96,8 @@ async def queue_frames(self, frames: Iterable[Frame] | AsyncIterable[Frame]):
 
     def _initial_metrics_frame(self) -> MetricsFrame:
         processors = self._pipeline.processors_with_metrics()
-        ttfb = [{"name": p.name, "time": 0.0} for p in processors]
-        processing = [{"name": p.name, "time": 0.0} for p in processors]
+        ttfb = [{"processor": p.name, "value": 0.0} for p in processors]
+        processing = [{"processor": p.name, "value": 0.0} for p in processors]
         return MetricsFrame(ttfb=ttfb, processing=processing)
 
     async def _process_down_queue(self):
@@ -106,7 +107,9 @@ async def _process_down_queue(self):
             report_only_initial_ttfb=self._params.report_only_initial_ttfb
         )
         await self._source.process_frame(start_frame, FrameDirection.DOWNSTREAM)
-        await self._source.process_frame(self._initial_metrics_frame(), FrameDirection.DOWNSTREAM)
+
+        if self._params.send_initial_empty_metrics:
+            await self._source.process_frame(self._initial_metrics_frame(), FrameDirection.DOWNSTREAM)
 
         running = True
         should_cleanup = True
diff --git a/src/pipecat/processors/frameworks/rtvi.py b/src/pipecat/processors/frameworks/rtvi.py
index f9e76fb6d..986b59bcd 100644
--- a/src/pipecat/processors/frameworks/rtvi.py
+++ b/src/pipecat/processors/frameworks/rtvi.py
@@ -19,6 +19,7 @@
     LLMMessagesAppendFrame,
     LLMMessagesUpdateFrame,
     LLMModelUpdateFrame,
+    MetricsFrame,
     StartFrame,
     SystemFrame,
     TTSSpeakFrame,
@@ -456,6 +457,13 @@ async def _handle_setup(self, setup: RTVISetup | None):
             start_frame = dataclasses.replace(self._start_frame)
             await self.push_frame(start_frame)
 
+            # Send new initial metrics with the new processors
+            processors = parent.processors_with_metrics()
+            processors.extend(self._pipeline.processors_with_metrics())
+            ttfb = [{"processor": p.name, "value": 0.0} for p in processors]
+            processing = [{"processor": p.name, "value": 0.0} for p in processors]
+            await self.push_frame(MetricsFrame(ttfb=ttfb, processing=processing))
+
         message = RTVIBotReady()
         frame = TransportMessageFrame(message=message.model_dump(exclude_none=True))
         await self.push_frame(frame)
diff --git a/src/pipecat/transports/services/daily.py b/src/pipecat/transports/services/daily.py
index 142a38c02..8cfbc7530 100644
--- a/src/pipecat/transports/services/daily.py
+++ b/src/pipecat/transports/services/daily.py
@@ -678,12 +678,15 @@ async def send_message(self, frame: TransportMessageFrame):
         await self._client.send_message(frame)
 
     async def send_metrics(self, frame: MetricsFrame):
+        metrics = {}
+        if frame.ttfb:
+            metrics["ttfb"] = frame.ttfb
+        if frame.processing:
+            metrics["processing"] = frame.processing
+
         message = DailyTransportMessageFrame(message={
             "type": "pipecat-metrics",
-            "metrics": {
-                "ttfb": frame.ttfb or [],
-                "processing": frame.processing or [],
-            },
+            "metrics": metrics
         })
         await self._client.send_message(message)