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Hi Joseph - I'm guessing that you are not familiar with the Unix command line interface -- bash ssh, curl and other many other command-line utilities. These are accessed through a terminal emulator, not through a web browser. Adding a temperature display to a Dahua camera might be a good...

Josef - the RUT956 datasheet says that it uses the Busybox shell. So if you are comfortable with unix shell scripts and cron then it should be straightforward to follow the advice earlier in this thread, ie: create a shell script that gets the temperature and posts it to the camera's On Screen...

I have been using the VTO's internal SIP server. I was thinking about running a separate server; I've taken a quick look at Sip Witch, but I'll also look at PBX in a Box. Your approach -- client calls a single number that triggers the server to call multiple numbers -- sounds practical and...

I have been experimenting with a Dahua VTO2202F (PoE version) for a week or so. I've found a few nice features, several missing features and some stuff that is so weird that I think I must have misunderstood what's happening. The door station hardware is elegant and looks like it will last, and...

Hi -I have been experimenting with a VTO2202F for the last week or so. I just saw your message. I have had Linphone on a MacBook consistently making and receiving calls to the VTO with good quality 1-way video and 2-way audio. The only problem I have with Linphone is in initiating a video call...

Well.... I take the point about water and cables. But... two of these cameras are in Greece; the remainder are in the UK. There is no commonality among the cabling. And of course dodgy ethernet cables could be expected to cause frame errors and discards, which would be logged by the...

Hi - cabling is all new; less than two years old. Two of the five problem cameras are on the same PoE switch - a Tenda TEF1105P. I'm going to try swapping that for a smart switch with power mngt, etc. The other cameras all have completely different 12V feeds.

I'm running six Dahua cams in two locations: - 2x SD22404 running V2.623 - 2x IPC-HDBW2431 running V2.8 (PoE power) - 1x IPC-HFW1435SP running V2.8 - 1x IPC-HDBW4431 running V2.42 (PoE power) Only one of these is completely stable: the HDBW4431. The others all reboot several times a day...

How much of the entire exercise do you need or want to carry out with c++ ? My understanding is that updating OSD with the http API pretty much has to use 'digest' authentication. That is trivial in a scripting environment (e.g. curl in any Unix, or an analgous Windows utility). You could get...

Hi all Is there any definitive documentation of the current (or failing that, a relatively recent) version of Dahua HTTP API? The most recent documentation I have is an Amcrest-branded "Revision 2.12" document dated 2017-03-15. That runs to 256 pages, but must be at least two years behind...

Thanks Alastair and Tigerwillow. I should have mentioned that I did try 192.168.1.108 (no response) and portscanned across that and other Class Cs. But I did not try tcpdump/Wireshark/etc. so I'll look at that next. Cheers Sean

Hi all - I have a Dahua IPC-HDW2431R-ZS-B (IP67 4MP IR mini-dome) installed on an outside wall. After running happily for over a year it went offline a few days ago. The PoE hub showed it consuming power, and another camera showed it's IR leds were on, but it doesn't respond to pings and...

Progress! I can't persuade my VLC (3.0.6 Vetinari) to decode a file that just contains the octet stream from the camera. However, my initial ffmpeg tests used "ffmpeg version 2.8.15-0ubuntu0.16.04.1". I tried downloading the current ffmpeg snapshot ("ffmpeg version...

Aha; good idea. I just tried that, without success so far. It failed at HTTP auth, without ever getting an octet stream. My VLC installation doesn't seem to complete the HTTP Digest auth. It appears to send the initial request, receives a 401 response with the "WWW-Authenticate: Digest...

Woah.... this thread has moved a long way since my first question about an apparently damaged camera :) I just came back to say that the camera that I thought I had fried by connecting to 24V instead of 12V spent several months lying in a corner, then before throwing it out I tried patching...

I was happy to discover the "Download media file between times" API call, ie. http://<server>/cgi-bin/loadfile.cgi?action=startLoad&channel=<ChannelNo>&startTime=<starttime> &endTime=<endtime>[&subtype=<typeNo>] I was even happier that it seemed to work almost immediately with minimal hassle...

Aha!! I had been looking around the circuit boards, etc. Can't believe I missed that :( I've just left the site but I'll try again soon. Thanks Roman.

Hi all I'm having a stupidly difficult time trying to put an SD card in an SD42212T-HN. The spec says that it takes a Micro SD card of up to 128GB, but I cannot find a card holder or slot anywhere. Any suggestions? Does it really have this slot? Thanks Sean

Thanks Guys - this discussion has given me one idea: I'm going to try POE power instead of the 12V feed. As POE is 50V+ it must go through completely different input circuitry. I'll post an update when I've tried that, with good or bad news.

Aha. Thanks Tangent; points taken. I was hoping there might be an internal fuse or well-known component that could be replaced, but apparently not. I do have an electronic engineering degree, and have far too many diagnostic and chip-wrangling tools to hand.... but as you say, attempting to...

I accidentally connected an SD22204T-GN to a 24V (actually, ~26V) supply instead of the 12V it requires. It was only connected for about 20 seconds. Now it seems to be dead - no signals at all on the Ethernet cable. I can't see anything in the manual about a fuse or circuit breaker. Should I...

Example Lua code attached. I've only recently started experimenting with Lua so please forgive any bad style. Scope of locals in Lua seems to me to be slightly unconventional; if any implicit locals are odd or broken please let me know :)

I ended up implementing Digest auth. My code is in Lua for the Nodemcu environment; I have it running on a couple ESP8266 boards. I'm happy to post if that might be of interest to anybody.

I'm getting a bit frustrated trying to modify OSD using the http api. The camera is a Dahua SD42212T-HN running the 2.600 firmware. It all works fine in manual tests from a browser or using curl (7.54, on MacOS). But I want to have a script, small app or something on a small IOT device that...

Hi all.. I'm trying to use the http API and the CustomTitle[1].Text object (I think it's an object) to overlay windspeed. It's working on the Main Stream, but I can't work out how to enable OSD on the Sub Stream that Easy4ip seems to use. So... can OSD be displayed on Easy4ip? Can Easy4ip...

Last week I received a new SD42212T-HN with the V2.400.0000 firmware. There was a tab for Easy4ip, but it didn't work; never went online. After a fair amount of searching around I found this page http://www1.dahuasecurity.com/products/sd22204t-gn-3761.html The firmware tab contains the...