@Solla-topee

Since you're able to help me, I'll explain in detail what's happening. I've already tried to resolve this issue on the NVR forum on Reddit, so I already have a wealth of information about the problem and how to avoid it, but I haven't solved it yet. Please read the following carefully...

I purchased the TAPO TC70 (v3) in January 2025, and very shortly after, its firmware was automatically updated to version 1.4.0 Build 241212. I remember this well because this update introduced the panoramic image capture feature. Around this time, I configured this camera for use with my NVR (AgentDVR), which connects to the camera via ONVIF. At that time, everything worked perfectly; the videos recorded by the NVR through the TC70 were perfect and in 720p. So for a few months, until mid-June, I no longer watched any videos recorded by this camera. Around July, I needed to review some recent recordings, and all the recorded videos were producing artifacts and stuttering. See the image below for an example of "ghosting."

After some investigation, I noticed that the camera had been updated again, this time to version 1.4.2 Build 250313, the version currently installed (no further updates have been released since). I ignored this for a while, attempting every possible intervention on the NVR without any success. I have three other cameras in my setup, including a TAPO C100 purchased in mid-July, and they all work perfectly with the NVR, just as the TC70 did in the first half of the year.

Regarding the NVR, called AgentDVR (https://www.ispyconnect.com/), it's a very popular and well-regarded software. The software has undergone a few updates, but none in the period mentioned in this post (I didn't update it, and it doesn't auto-update). So, if the TC70 was working properly in the first half of 2025, it should continue to work properly, ruling out issues with the NVR software.

Technically speaking, AgentDVR (Agent in short) communicates with the TC70 via the ONVIF protocol, and thus three stream URLs were discovered. In Agent, it is possible to configure two streams: one for real-time viewing (Live URL) and one exclusively for recording (Record URL). The recommendation is to use a low-resolution stream for real-time viewing and a higher-resolution stream for recording. This is how the TC70 was configured in the first half of 2025, making it work perfectly. This is also the configuration used in the C100, which is now working perfectly.

And this is the summary of the problem:

Today, with the Agent's recommended configuration, 720p recordings exhibit artifacts (ghosting) and stuttering. Live viewing has never presented any problems. Recordings made through the TAPO app (on-demand recordings) are fine. I never used an SD card in the camera; I simply performed the recording test by tapping the recording icon in the TAPO app while viewing the TC70. The configuration used in the Agent for the TC70 worked in the first half of 2025 and now works with my other TP-Link camera (C100), which leads me to believe the issue is between the camera and the Agent.

I recently ran an experiment with the problematic camera (TC70), playing around with the "Live URL" and "Record URL" settings (Agent). This camera has three streams, two at 360p (I don't know why) and one at 720p. Below are the URLs as they are listed in the program:

• (1) 640x360: rtsp://192.168.100.15:554/stream2

• (2) 640x360: rtsp://192.168.100.15:554/stream8

• (3) 1280x720: rtsp://192.168.100.15:554/stream1

The experiment consisted of changing the values of the "Live URL" and "Record URL" fields, assigning them to either None or values (1) and (3). I didn't initially experiment with the second low-resolution stream (2). The results are as follows:

• When "Live URL" contains the URL (1) and "Record URL" contains the URL (3), the recordings are flawed, with stuttering and artifacts in the image.

• When "Live URL" contains the URL (1) and "Record URL" contains "None," the recording uses the Live URL automatically. The recording is therefore in 360p and is perfect, with no artifacts or stuttering. The same result is achieved if the same stream selected in "Live URL" (360p) is selected in "Record URL."

• When "Live URL" contains the URL (3) and "Record URL" contains "None," the recording uses the Live URL. The recording is therefore in 720p and is SURPRISINGLY PERFECT! No visual artifacts, just some slight stuttering, precisely because both the live stream and the recording are consuming a lot of network bandwidth. Again, the same result is achieved if the same stream selected in "Live URL" (720p) is selected in "Record URL."

• When "Live URL" contains URL (3) and "Record URL" contains URL (1), the recording is SURPRISINGLY BUGGY! WITH STUTTERING AND ARTIFACTS!

As you can see, this doesn't appear to be a bandwidth-related issue, since when both the recording and the live video use the high-resolution stream (720p), visual artifacts don't appear. On the other hand, contrary to all logic, when using the low-resolution stream to record when the live video stream is in 720p, the low-resolution recording becomes buggy! It's as if recording isn't working correctly when using different streams, which wasn't the case in the past :/

I hope I've been clear in my explanations and hope someone can help me. I assumed the problem was with the latest firmware update because that was exactly what was applied around the time I started noticing the issue, and that's why I requested downgrade instructions as a way to TEST if the issue is related to firmware 1.4.2 Build 250313. In another post on this forum, I saw that downgrade instructions were provided, but it was for a different camera, so I believe this is possible and would at least point us toward a more assertive solution.