S3 Pro support

[mremotegod]

First i appreciate everything that you have done up to this point for trying to get eufy to place nice outside of the native eufy app. i find it a headache i cannot record at 4k in the app and yet stream outside even at 1080p. i have some s330 (eufycam 3), and just recently purchased and installed some eufyCam S3 Pro's.

is it possible to have a toggle to enable under power to display direct power? all of my cameras are wired with a usbc cable and inside the eufy plugin i cannot tell scrypted this is the case. therefore when rebroadcasting it sees the camera is on battery power and is set to on demand.

i stopped rebroadcasting to work on problems 1 by one and for starters i am not getting snapshots for my new Eufycam S3 Pro's.
see log:
[Device_T8162T10244528F0] Created EufyDevice for device_T8162T10244528F0
[Device_T8162T10244528F0] Setting up WebSocket listener for device: T8162T10244528F0
[Device_T8162T10244528F0] WebSocket listener setup complete for device: T8162T10244528F0
[Device_T8162T10244528F0] Created EufyDevice for device_T8162T10244528F0
[Device_T8162T10244528F0] Setting up WebSocket listener for device: T8162T10244528F0
[Device_T8162T10244528F0] WebSocket listener setup complete for device: T8162T10244528F0
[Device_T8162T10244528F0] Scheduled refresh starting
[Device_T8162T10244528F0] Scheduled refresh completed successfully
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 🎥 Starting livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream start command sent successfully
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] Stream started
[Device_T8162T10244528F0] Stream started
[Device_T8162T10244528F0] 📐 Captured video metadata: 3840x2160 @ 15fps, codec: H265
[Device_T8162T10244528F0] 📹 Livestream confirmed active - receiving video data
[Device_T8162T10244528F0] 📐 Captured video metadata: 3840x2160 @ 15fps, codec: H265
[Device_T8162T10244528F0] 📹 Livestream confirmed active - receiving video data
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
[Device_T8162T10244528F0] 🛑 Stopping livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream stop command sent successfully
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 🎥 Starting livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream start command sent successfully
[Device_T8162T10244528F0] Stream started
[Device_T8162T10244528F0] Stream started
[Device_T8162T10244528F0] 📹 Livestream confirmed active - receiving video data
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
[Device_T8162T10244528F0] 🛑 Stopping livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream stop command sent successfully
[Device_T8162T10244528F0] Updating property powerSource to 0
[Device_T8162T10244528F0] Property powerSource updated successfully
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 🎥 Starting livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream start command sent successfully
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
########################
4/2/2026, 10:41:52 AM
########################
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8162T10244528F0] Scheduled refresh starting
[Device_T8162T10244528F0] Scheduled refresh completed successfully
########################
4/2/2026, 10:51:15 AM
########################
[Device_T8162T10244528F0] Scheduled refresh starting
[Device_T8162T10244528F0] Scheduled refresh completed successfully
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 📸 Taking snapshot from camera stream
[Device_T8162T10244528F0] Using timeout: 15000ms for snapshot capture
[Device_T8162T10244528F0] 📸 Capturing snapshot...
[Device_T8162T10244528F0] 🎥 Starting livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream start command sent successfully
[Device_T8162T10244528F0] Stream started
[Device_T8162T10244528F0] Stream started
[Device_T8162T10244528F0] 📹 Livestream confirmed active - receiving video data
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
[Device_T8162T10244528F0] Failed to capture snapshot: Error: Snapshot capture timed out after 15000ms - no keyframe received
[Device_T8162T10244528F0] 🛑 Stopping livestream (attempt 1/3)
[Device_T8162T10244528F0] ✅ Livestream stop command sent successfully

When i try to load an s330 this is the log:
[Device_T8160P122344475A] Created EufyDevice for device_T8160P122344475A
[Device_T8160P122344475A] Setting up WebSocket listener for device: T8160P122344475A
[Device_T8160P122344475A] WebSocket listener setup complete for device: T8160P122344475A
[Device_T8160P122344475A] Created EufyDevice for device_T8160P122344475A
[Device_T8160P122344475A] Setting up WebSocket listener for device: T8160P122344475A
[Device_T8160P122344475A] WebSocket listener setup complete for device: T8160P122344475A
[Device_T8160P122344475A] Scheduled refresh starting
[Device_T8160P122344475A] Scheduled refresh completed successfully
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] 🎥 Starting livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream start command sent successfully
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] 📐 Captured video metadata: 3840x2160 @ 15fps, codec: H265
[Device_T8160P122344475A] 📹 Livestream confirmed active - receiving video data
[Device_T8160P122344475A] 📐 Captured video metadata: 3840x2160 @ 15fps, codec: H265
[Device_T8160P122344475A] 📹 Livestream confirmed active - receiving video data
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] ✅ Snapshot captured: 101470 bytes (keyframe)
[Device_T8160P122344475A] ✅ Snapshot captured: 101470 bytes (keyframe)
[Device_T8160P122344475A] Captured H.264 keyframe: 101470 bytes - converting to JPEG
[Device_T8160P122344475A] Captured H.264 keyframe: 101470 bytes - converting to JPEG
[Device_T8160P122344475A] 🛑 Stopping livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream stop command sent successfully
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 510049 bytes
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 510049 bytes
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] 🎥 Starting livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream start command sent successfully
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] 📹 Livestream confirmed active - receiving video data
[Device_T8160P122344475A] ✅ Snapshot captured: 154924 bytes (keyframe)
[Device_T8160P122344475A] ✅ Snapshot captured: 154924 bytes (keyframe)
[Device_T8160P122344475A] Captured H.264 keyframe: 154924 bytes - converting to JPEG
[Device_T8160P122344475A] Captured H.264 keyframe: 154924 bytes - converting to JPEG
[Device_T8160P122344475A] 🛑 Stopping livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream stop command sent successfully
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 705554 bytes
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 705554 bytes
########################
4/2/2026, 10:42:00 AM
########################
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] 🎥 Starting livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream start command sent successfully
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] 📹 Livestream confirmed active - receiving video data
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] ✅ Snapshot captured: 128862 bytes (keyframe)
[Device_T8160P122344475A] ✅ Snapshot captured: 128862 bytes (keyframe)
[Device_T8160P122344475A] Captured H.264 keyframe: 128862 bytes - converting to JPEG
[Device_T8160P122344475A] Captured H.264 keyframe: 128862 bytes - converting to JPEG
[Device_T8160P122344475A] 🛑 Stopping livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream stop command sent successfully
[Device_T8160P122344475A] 📹 Livestream confirmed active - receiving video data
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 676677 bytes
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 676677 bytes
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Scheduled refresh starting
[Device_T8160P122344475A] Scheduled refresh completed successfully
[Device_T8160P122344475A] Scheduled refresh starting
[Device_T8160P122344475A] Scheduled refresh completed successfully
########################
4/2/2026, 10:53:09 AM
########################
[Device_T8160P122344475A] Scheduled refresh starting
[Device_T8160P122344475A] Scheduled refresh completed successfully
[Device_T8160P122344475A] Scheduled refresh starting
[Device_T8160P122344475A] Scheduled refresh completed successfully
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] 🎥 Starting livestream (attempt 1/3)
[Device_T8160P122344475A] 📸 Taking snapshot from camera stream
[Device_T8160P122344475A] Using timeout: 15000ms for snapshot capture
[Device_T8160P122344475A] 📸 Capturing snapshot...
[Device_T8160P122344475A] ✅ Livestream start command sent successfully
[Device_T8160P122344475A] Error in state change callback: TypeError: Cannot set properties of undefined (setting 'motionDetected')
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] Stream started
[Device_T8160P122344475A] ✅ Snapshot captured: 133085 bytes (keyframe)
[Device_T8160P122344475A] ✅ Snapshot captured: 133085 bytes (keyframe)
[Device_T8160P122344475A] Captured H.264 keyframe: 133085 bytes - converting to JPEG
[Device_T8160P122344475A] Captured H.264 keyframe: 133085 bytes - converting to JPEG
[Device_T8160P122344475A] 🛑 Stopping livestream (attempt 1/3)
[Device_T8160P122344475A] ✅ Livestream stop command sent successfully
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 702361 bytes
[Device_T8160P122344475A] ✅ Snapshot converted to JPEG: 702361 bytes

im not sure how many users are running S3 Pro's with your plugin but i suspect there will be more to come in the future. any logs you may need to see please let me know and ill be happy to provide.

[mia-pa]

Root Cause & Next Steps

The crash (Cannot set properties of undefined (setting motionDetected)) occurs because stateService.updateProperty("motionDetected") fires via a WebSocket event callback before the device's internal state object is fully initialized during early device setup.

Fix: Add a guard in device-state-service.ts in the updateProperty() method:

updateProperty(property: string, value: unknown) {
  if (!this.state) return; // guard: state not yet initialized
  this.state[property] = value;
  // ... rest of method
}

Alternatively, ensure the device subscribes to WebSocket events only after its state is fully initialized.

Note: PR #16 (currently open) also includes a related fix for Homebase 3 / S3 Pro streaming reliability — merging that PR would help with the broader S3 Pro experience.

[acerbetti]

Fixed in 9fdf3e1 — added a stateReady flag to EufyDevice so syncStateToProperties() is a no-op until loadInitialProperties() completes, and added a null guard in DeviceStateService.updateProperty() per your suggestion. Thanks @mia-pa!