nilstate · auscaster · Apr 8, 2026 · Apr 8, 2026
diff --git a/config.json b/config.json
@@ -37,6 +37,11 @@
         "everyNthFrame": 6,
         "minIntervalUsec": 200000,
         "queueDepth": 8,
+        "normalize": {
+          "width": 0,
+          "height": 0,
+          "pixelFmt": ""
+        },
         "snapshots": {
           "enabled": false,
           "dir": "./recordings/snapshots",

diff --git a/config.rtsp.example.json b/config.rtsp.example.json
@@ -33,6 +33,11 @@
         "everyNthFrame": 6,
         "minIntervalUsec": 200000,
         "queueDepth": 8,
+        "normalize": {
+          "width": 0,
+          "height": 0,
+          "pixelFmt": ""
+        },
         "snapshots": {
           "enabled": true,
           "dir": "./recordings/snapshots",

diff --git a/packaging/config.example.json b/packaging/config.example.json
@@ -37,6 +37,11 @@
         "everyNthFrame": 6,
         "minIntervalUsec": 200000,
         "queueDepth": 8,
+        "normalize": {
+          "width": 0,
+          "height": 0,
+          "pixelFmt": ""
+        },
         "snapshots": {
           "enabled": false,
           "dir": "./recordings/snapshots",

diff --git a/packaging/config.rtsp.example.json b/packaging/config.rtsp.example.json
@@ -37,6 +37,11 @@
         "everyNthFrame": 6,
         "minIntervalUsec": 200000,
         "queueDepth": 8,
+        "normalize": {
+          "width": 0,
+          "height": 0,
+          "pixelFmt": ""
+        },
         "snapshots": {
           "enabled": true,
           "dir": "./recordings/snapshots",

diff --git a/src/server/internal/config.cpp b/src/server/internal/config.cpp
@@ -129,6 +129,15 @@ ConfigLoadResult loadConfigResult(const std::string& path)
                     c.vision.everyNthFrame = v.value("everyNthFrame", c.vision.everyNthFrame);
                     c.vision.minIntervalUsec = v.value("minIntervalUsec", c.vision.minIntervalUsec);
                     c.vision.queueDepth = v.value("queueDepth", c.vision.queueDepth);
+                    if (v.contains("normalize")) {
+                        auto& normalize = v["normalize"];
+                        c.vision.normalize.width =
+                            normalize.value("width", c.vision.normalize.width);
+                        c.vision.normalize.height =
+                            normalize.value("height", c.vision.normalize.height);
+                        c.vision.normalize.pixelFmt =
+                            normalize.value("pixelFmt", c.vision.normalize.pixelFmt);
+                    }
                     if (v.contains("motion")) {
                         auto& motion = v["motion"];
                         c.vision.motionGridWidth = motion.value("gridWidth", c.vision.motionGridWidth);

diff --git a/src/server/internal/config.h b/src/server/internal/config.h
@@ -30,6 +30,13 @@ struct Config
 
     struct VisionConfig
     {
+        struct NormalizerConfig
+        {
+            int width = 0;
+            int height = 0;
+            std::string pixelFmt;
+        };
+
         struct SnapshotConfig
         {
             bool enabled = false;
@@ -49,6 +56,7 @@ struct Config
         uint32_t everyNthFrame = 6;
         int64_t minIntervalUsec = 200000;
         int queueDepth = 8;
+        NormalizerConfig normalize;
         uint32_t motionGridWidth = 32;
         uint32_t motionGridHeight = 18;
         uint32_t motionWarmupFrames = 2;

diff --git a/src/server/internal/media.cpp b/src/server/internal/media.cpp
@@ -31,6 +31,12 @@ std::string intelligenceSourceLabel(const Config& config, const std::string& pee
     return config.source.empty() ? peerId : config.source;
 }
 
+
+std::string intelligenceStreamId(const std::string& peerId)
+{
+    return "stream/" + peerId;
+}
+
 } // namespace
 
 
@@ -425,6 +431,12 @@ json::Value MediaSession::intelligenceStatus() const
         vision["sampledFrames"] = stats.forwarded;
         vision["sampledDropped"] = stats.dropped;
     }
+    if (_visionNormalizer) {
+        const auto stats = _visionNormalizer->stats();
+        vision["normalizedFrames"] = stats.emitted;
+        vision["normalizerDropped"] = stats.dropped;
+        vision["normalizerConverted"] = stats.converted;
+    }
     if (_visionQueue) {
         vision["queueDepth"] = static_cast<std::uint64_t>(_visionQueue->size());
         vision["queueDropped"] = static_cast<std::uint64_t>(_visionQueue->dropped());
@@ -577,6 +589,8 @@ void MediaSession::startStreaming()
 
     if (_visionSampler)
         _visionSampler->reset();
+    if (_visionNormalizer)
+        _visionNormalizer->reset();
     if (_visionDetector)
         _visionDetector->reset();
     if (_visionArtifacts)
@@ -605,6 +619,7 @@ void MediaSession::setupIntelligence()
         return;
 
     const auto sourceLabel = intelligenceSourceLabel(_config, _peerId);
+    const auto streamId = intelligenceStreamId(_peerId);
 
     if (_config.vision.enabled) {
         _visionArtifacts = std::make_unique<VisionArtifacts>(
@@ -623,9 +638,18 @@ void MediaSession::setupIntelligence()
             .everyNthFrame = _config.vision.everyNthFrame,
             .minIntervalUsec = _config.vision.minIntervalUsec,
         });
+        _visionNormalizer = std::make_shared<vision::FrameNormalizer>(
+            vision::FrameNormalizerConfig{
+                .sourceId = sourceLabel,
+                .streamId = streamId,
+                .width = _config.vision.normalize.width,
+                .height = _config.vision.normalize.height,
+                .pixelFmt = _config.vision.normalize.pixelFmt,
+            });
         _visionQueue = std::make_shared<vision::DetectionQueue>(_config.vision.queueDepth);
         _visionDetector = std::make_unique<vision::MotionDetector>(vision::MotionDetectorConfig{
             .source = sourceLabel,
+            .streamId = streamId,
             .detectorName = "motion",
             .gridWidth = _config.vision.motionGridWidth,
             .gridHeight = _config.vision.motionGridHeight,
@@ -644,12 +668,16 @@ void MediaSession::setupIntelligence()
                 _visionSampler->process(packet);
         };
         _visionSampler->emitter += [this](IPacket& packet) {
-            auto* frame = dynamic_cast<av::PlanarVideoPacket*>(&packet);
+            if (_visionNormalizer)
+                _visionNormalizer->process(packet);
+        };
+        _visionNormalizer->emitter += [this](IPacket& packet) {
+            auto* frame = dynamic_cast<vision::VisionFramePacket*>(&packet);
             if (frame && _visionQueue)
                 _visionQueue->process(*frame);
         };
         _visionQueue->emitter += [this](IPacket& packet) {
-            auto* frame = dynamic_cast<av::PlanarVideoPacket*>(&packet);
+            auto* frame = dynamic_cast<vision::VisionFramePacket*>(&packet);
             if (frame && _visionDetector)
                 _visionDetector->process(*frame);
         };

diff --git a/src/server/internal/media.h b/src/server/internal/media.h
@@ -13,6 +13,7 @@
 #include "icy/speech/voiceactivitydetector.h"
 #include "icy/symple/server.h"
 #include "icy/vision/detectionqueue.h"
+#include "icy/vision/framenormalizer.h"
 #include "icy/vision/framesampler.h"
 #include "icy/vision/motiondetector.h"
 #include "icy/webrtc/peersession.h"
@@ -113,6 +114,7 @@ class MediaSession : public std::enable_shared_from_this<MediaSession>
     std::shared_ptr<av::VideoPacketEncoder> _videoEncoder;
     std::shared_ptr<av::AudioPacketEncoder> _audioEncoder;
     std::shared_ptr<vision::FrameSampler> _visionSampler;
+    std::shared_ptr<vision::FrameNormalizer> _visionNormalizer;
     std::shared_ptr<vision::DetectionQueue> _visionQueue;
     std::unique_ptr<vision::MotionDetector> _visionDetector;
     std::shared_ptr<speech::SpeechQueue> _speechQueue;

diff --git a/src/server/internal/visionartifacts.cpp b/src/server/internal/visionartifacts.cpp
@@ -23,6 +23,14 @@ double fpsFromWindow(uint64_t frames, int64_t firstUsec, int64_t lastUsec)
         (static_cast<long double>(frames - 1) * 1000000.0L) / durationUsec);
 }
 
+
+int64_t eventFrameTimeUsec(const vision::VisionEvent& event)
+{
+    if (event.frame.ptsUsec > 0)
+        return event.frame.ptsUsec;
+    return event.emittedAtUsec;
+}
+
 } // namespace
 
 
@@ -152,22 +160,23 @@ void VisionArtifacts::onFrame(const av::PlanarVideoPacket& packet)
 VisionArtifactResult VisionArtifacts::onEvent(const vision::VisionEvent& event)
 {
     std::lock_guard lock(_mutex);
+    const int64_t frameTimeUsec = eventFrameTimeUsec(event);
 
     VisionArtifactResult result;
-    result.latencyUsec = latencyForFrameLocked(event.frame.timeUsec);
+    result.latencyUsec = latencyForFrameLocked(frameTimeUsec);
     _lastLatencyUsec = result.latencyUsec;
 
     if (_config.snapshotsEnabled) {
-        const int64_t sinceLastSnapshot = event.frame.timeUsec - _lastSnapshotTimeUsec;
+        const int64_t sinceLastSnapshot = frameTimeUsec - _lastSnapshotTimeUsec;
         if (_lastSnapshotTimeUsec == 0 ||
             sinceLastSnapshot >= _config.snapshotMinIntervalUsec) {
-            if (auto* frame = bestFrameLocked(event.frame.timeUsec)) {
-                const auto path = makeSnapshotPathLocked(event.frame.timeUsec);
+            if (auto* frame = bestFrameLocked(frameTimeUsec)) {
+                const auto path = makeSnapshotPathLocked(frameTimeUsec);
                 if (writeSnapshotLocked(*frame, path)) {
                     result.snapshotPath = path;
                     result.snapshotUrl = artifactUrlFor(
                         fs::makePath("snapshots", fs::filename(path)));
-                    _lastSnapshotTimeUsec = event.frame.timeUsec;
+                    _lastSnapshotTimeUsec = frameTimeUsec;
                     _lastSnapshotPath = result.snapshotPath;
                     _lastSnapshotUrl = result.snapshotUrl;
                     ++_snapshotsWritten;
@@ -180,14 +189,14 @@ VisionArtifactResult VisionArtifacts::onEvent(const vision::VisionEvent& event)
     }
 
     if (_config.clipsEnabled) {
-        if (_clip && event.frame.timeUsec <= _clip->deadlineUsec) {
+        if (_clip && frameTimeUsec <= _clip->deadlineUsec) {
             _clip->deadlineUsec = std::max(
                 _clip->deadlineUsec,
-                event.frame.timeUsec + _config.clipPostRollUsec);
+                frameTimeUsec + _config.clipPostRollUsec);
         } else {
             finishClipLocked();
-            startClipLocked(event.frame.timeUsec);
-            flushBufferedFramesLocked(event.frame.timeUsec - _config.clipPreRollUsec);
+            startClipLocked(frameTimeUsec);
+            flushBufferedFramesLocked(frameTimeUsec - _config.clipPreRollUsec);
         }
 
         if (_clip) {

diff --git a/web/src/app.js b/web/src/app.js
@@ -461,7 +461,15 @@ function buildArtifactLinks (event) {
 }
 
 function formatEventTime (event) {
-  const usec = Number(event?.time || event?.audio?.time || event?.frame?.time || 0)
+  const usec = Number(
+    event?.frame?.ptsUsec ??
+    event?.audio?.timeUsec ??
+    event?.time ??
+    event?.audio?.time ??
+    event?.frame?.time ??
+    event?.emittedAtUsec ??
+    0
+  )
   if (!Number.isFinite(usec) || usec <= 0) {
     return 'live'
   }