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    PTZ linkage on NVRs

    Has anyone else played with PTZ linkage? This seems to be very good extra when you have a PTZ camera added to a system. When camera 1 tripwire trips, PTZ linkage commands PTZ camera to turn to preset 5, which points to the area near camera 1. This is good as long there is no tracking on the PTZ...
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    Do NARs (network audio recorder) exist?

    A customer is living middle of the forest and is interested in nature sounds. The last one was strange bang that was coming probably when ground was freezing, temp dropping rapid below -10c. One of his ip-cameras has built-in mic so we searched the noise there, could find it when exported .wav...
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    Dahua NVR AI Search

    What are requirements for an IVS event to be shown on NVR AI Search? On customers NVR4216-16P-4KS2/L he has mixed old non-IVS cameras and newer IVS cameras. For example, on channel 6 there is HFW2231S ,channel 7 HFW2431T-ZS and on channel 8 HFW2231S. These work fine with intrusion and tripwire...
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    Hiwatch DS-P2420 PTZ half bricked

    Got a PTZ-camera Hikvision Hiwatch DS-P2420 PTZ-camera from a client. Had some symptoms ealier, camera went unresponsive and only way to get it running again was using SADP and activate it again and putting all the settings in. It worked well for months, but then after reboot camera went...
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    Dahua poor detecting birds with IVS?

    I have a customer who wants to detect birds on a farm area and after positive detection sound from a big speaker should come out (gunshot or bird scream sound, etc.) to scare them away. I have started testing this with installing SD4A216DB-HNY PTZ camera. Seems to be good camera, but so far in...
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    DMSS update 30.3.24 and PTZ preset lost

    Seems that new update 30.3.24 has wiped away the flag icon for choosing PTZ preset. Anyone else noticed?
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    gDMSS plus causes router lag?

    I have Zyxel USG-20 firewall/router with 4G connection in my home office and Ubiquiti UAP-AC-Lite as wifi access point. In my android phone I have gDMSS Plus installed with 18 devices. I know DMSS is the new app which should be used, I have it installed, but I still use mainly gDMSS, so let's...
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    Hikvision HWN-2104H-4P, no video on browser

    I once bought a cheap Hikvision HWN-2104H-4P just to test how Hikvision camera system works. Well, compared to Dahua, not good. Overall, seems to do the simple job ok, shows live image on local display and IVMS-apps, records and playbacks. Installed it for my sister couple of years ago, and...
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    DMSS updated started to ask to login, channel names and push notifications not working when logged in...

    DMSS (Android) has been updated few days ago and has now been starting to ask to login to Dahua account several times per day. It has been year or two since I have logged in, and I remember that it made everything a mess. I have tens of cameras/NVR's in my DMSS and don't want all of them to be...
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    Pulling a snapshot trough NVR works only when IR is on

    I have again interesting situation going on with NVR4104-4P-4KS2 and 4 bullets. 3 x HFW2231 and 1 x HFW2431T-ZS NVR is in remote site with public IP and port forward, the server which is pulling the image is at server farm. I need to pull a still image from channels 2 and 4 once a hour for a...
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    Surge damage repeating

    I have installed cameras on a site 4 years ago. There has been several devices damaged during these years. Poe switches, cameras, wifi access points and injectors. There are cameras in 3 buildings, and internet / lan connection to NVR is done with 2.4GHz wifi outdoor TP-link access points. In...
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    Dahua periodic FTP upload messed! Does Dahua FTP upload have quota?

    I have had one Dahua IPC-HFW5541T-ASE doing periodic (2min) snapshot upload via FTP and internet to a Zyxel NSA362 NAS device with 2x6TB WD Red configured RAID1. I have monitored the progress just now and then looking that the folder structure is solid and I have also PHP script to pull out the...
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    Dahua SD5A225XA reboot mark: abort

    My client has several of DH-SD5A225XA-HNR 25x AI PTZ domes and some of them seem to have occasional reboots. In the log there is reboot mark: abort. This can happen right after IVS has been triggered and tracking has been started, but also when there is no events triggered (nothing moving in...
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    Dahua SD card recording problems and most reliable sd card?

    My client has problems in his Dahua cameras with sd card recording. One HFW4431E-E3 bullet and SD6CE445XA-HNR big PTZ. Both cameras are set up to record continuously "green" general stream and plus that also motion detection stream triggered by IVS. In HFW4431E the recording does not...
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    Dahua NVR4208-8P-4KS2 and timeline shifting 1hr with other brand cameras

    I have installed totally 9 Dahua NVR4208-8P-4KS2 recorders. Two of them suffer of strange issue. In addition to Dahua, those two systems include also other brand cameras. First has 2 x Dahua and 2 x Hikvision, second 4 x Dahua, 4 x Milesight. Both seem to have something wrong with the time. I...
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    Milesight NVR RTSP url?

    My client has Milesight NVR MS-N5016-UT. How can we get RTSP stream out from the NVR? In the settings RTSP is mentioned and there is a port 554 for it as a default. I have tried with VLC but it just gives an error. When trying directly to all Milesight cameras connected with that NVR, RTSP...
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    Zavio camera in Dahua NVR = auto exposure problems

    I have a client who has Zavio B5110 and B5210 cameras. There was NAS storage for them but it was difficult to use and sometimes offline, so I decided to put a Dahua NVR4104-P there. I knew it would work as I have myself B5110 connected to my NVR4116 and in past I had one B5210 also. And...
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    Dahua gDMSS and channel (camera) names

    17 Dahua NVR systems so far installed, and I can connect all of them with gDMSS. Some of them (oldest) are with domain names and port forwarding, but most p2p. From those systems, there is only one (1!) which shows camera channel names in gDMSS. Others show only channel 01, channel 02, etc...
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    Dahua SmartPSS in Win8/10?

    Something strange with Windows 10 and Dahua SmartPSS software. In my own PC it works fine with Win7 Home, connecting almost 20 devices (NVRs/cameras), some of them P2P, some with dyndns. Installed in Win8 laptop. P2P to my own NVR works fine, but another one - P2P too - seems to be online but...
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    Dahua NVR4108 too fast live stream and playback

    As addition to the another thread about abnormal reboots, these two NVRs who have most frequent reboots, have also an other issue with video speed. When viewed in internet, web UI, SmartPSS or gDMSS, live video (main and sub stream) is running too fast. To me it looks almost like 2 x speed when...
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    Dahua NVR4108 0x01 Abnormal reboot

    So far I have installed 7 different kind of cctv systems with all NVR4108 recorders. Basically all is ok, but 4 of them suffer of random abnormal reboots. Sometimes there are 2-3 days they are running fine, sometimes days when they boot 2-4 / times a day. In the logs anything common cannot be...
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    Dahua NVRs motion record with scheduled record skips frames

    I have installed now around 16-17 Dahua systems with NVRs 4108 and 4116, couple with 5276 NVRs too. Normally I set them to record all channels 24/7 plus motion detection to record the channel where motion is detected. That way I can see continuous green timeline with yellow marks where there...
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