@Solla-topee Video clips sent. Thank you very much for your interest.

Solla-topee wrote

  @CUNEYT 

Hi,
1. I find the following information from the provided videos. Please check if it's correct: on your Synology Surveillance Station, when event detection is set to Tapo C225, the beginning of the movement was not recorded on the Synology side. However, this phenomenon didn't occur when event detection is set to Surveillance Station.
 
If so, to verify the reported phenomenon lies with the Tapo C225 or Synology, you may also need technical support from Synology. Alternatively, a workaround is to enable pre-recording on the Synology Surveillance Station, for example, pre-recording for 10 seconds, and see if that helps.

Recording | Surveillance Station - Synology Knowledge Center

 

2. Although the camera doesn't detect events when switching between day/night modes, the switching time is very short and usually doesn't affect the detection function. Please confirm when the Tapo C225 switches from night mode to day mode (or vice versa), and a movement occurs simultaneously, whether you will receive the corresponding detection notification on your phone? Does the corresponding detection video clip store on the SD card?

 

 

  @Solla-topee 

1. Correct. I also tried 10 seconds pre-recording but it did not changed anything. But I can test with increasing it to 15-20 seconds if it helps. 

The problem is, the camera doesn't detect events when switching between day/night modes and it does not send a movement occured signal to Synology. If Synology does not get that signal it cannot add pre-recording time to beginning. If you watched the clips you can clearly see that a full 11 seconds missing at the beginning of the Synology clip. That 11 second movement exists at the begining of the camera's clip recorded on the sd card. 

You say that the switching time is very short but it takes about 10-11 seconds and after that delay the camera starts to fallow the events again.

2. Of course yes, Corresponding clip stores on the SD card. I have sent you that clip taken from the sd card.

When event detection is set to Synology instead of Tapo C225, everythinj works as expected.

Best regards.

Critical Security Vulnerability: No ONVIF Trigger During Mode Transition (11-Seconds Blind Spot)

"I have tested your suggestion regarding the pre-recording buffer, and I must report that it DOES NOT solve the underlying security flaw. My detailed tests have revealed a critical vulnerability in the Tapo C225's firmware:

1. The Deafness Period: Contrary to your claim that the transition is 'very short', in a real-world dark environment, the Day/Night switch takes approximately 10 to 11 seconds.

2. Missing ONVIF Trigger: During these 11 seconds, while the camera is adjusting its image, it completely fails to send any ONVIF motion trigger to the NAS. The video stream continues, but the 'Motion Detected' signal is suspended.

3. The 9-Second Failure Scenario: If an intruder enters the room, triggers the light, and leaves the frame within 9 seconds (while the camera is still in transition), the camera NEVER sends a trigger. There is no recording on the NAS side.

4. Pre-recording is Useless Without a Trigger: Since the NAS (Synology) never receives a 'Start Recording' signal from the camera, it doesn't matter if the pre-recording buffer is set to 15 or 30 seconds; the NAS will never save the footage to the disk. The entire event is lost.

This is not a minor delay; it is a total loss of security during a 11-second window. The camera prioritizes image adjustment over its primary function: motion alerting. I am requesting an urgent firmware investigation to ensure ONVIF triggers are prioritized even during mode transitions.

Best regards.