PAL video output on BNC ?

[artag]

I bought a DH-TPC-BF2221-HTM on ebay. Seems in perfect condition, probably never installed.

I was able to get it running through the web interface thanks to a thread here about using edge in IE mode, but I'd like to have the plain old video mode through the BNC connector : I want to pass the output direct to a monitor and this should give me the least lag. I don't see any proper video signal coming out. Just about 0.4VDC, or black level (but no sync). Does it have to be enabled somewhere ?

I'd also like to find a full manual - the leaflet that came with it is a bit minimalistic and there are a lot of settings that aren't explained.

Finally, I'd like to run it from DC power instead of PoE. There's a connector and a specification for this but no adapter, and the polarity isn't shown. I know the central pin positive is very common but confirmation (or a warning!) would be good.

 

[artag]

I found 'Web operation manual' which is a great help with general settings on the web interface, but doesn't mention the BNC connector. It does provide some information about RTSP but I haven't yet been able to make it work with VLC (even though there's a specific example !).

 

[TonyR]

I found 'Web operation manual' which is a great help with general settings on the web interface, but doesn't mention the BNC connector. It does provide some information about RTSP but I haven't yet been able to make it work with VLC (even though there's a specific example !).

What is the URL for RTSP you're trying with VLC?

 

[artag]

I'm away from home for a few days so I can't double-check but I tried all the suggestions from DahuaWiki

• rtsp:/192.168.2.128:554/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif
• rtsp:/admin:admin@10.7.6.67:554/cam/realmonitor?channel=1&subtype=1
• rtsp:/192.168.2.128:554/live

with appropriate changes to password and IP address (192.168.1.108, same lan as the host). I also tried setting the authorisation to 'none' , and the first one with & without the last two parameters.

VLC complained it couldn't access it (so it looked like a permission or protocol problem rather than a commos problem. It also told me to check logs for details : there was nothing in the camera log but I couldn't find VLC logs. VLC was running under Debian Linux.

 

[TonyR]

Have you insured that the RTSP port is still at the default of 554? If you have not done so, I would perform a hard reset of the camera especially since it was purchased used from eBay.

 

[artag]

I'd already done a 'factory reset' using the button under the SD card access hatch - without that I wasn't able to find it's IP address. It was also ringing the alarm buzzer a few times on every power cycle making experiments annoying !

 

[artag]

I came to the conclusion that either the BNC connector on this camera is pointless (seems odd to have it ?) or that it's intended to be configured with the UTC protocol. One way to configure it is with an inline control box and the other is with a DVR.

The inline box might be OK and are pretty cheap. The snag is the box is £15 and the postage from Ital or elsewhere is £30. And it might not even work. So I went looking for a DVR and bought one on ebay. Much cheaper than the postage but maybe a mistake ..

I found it hard to discover which had UTC but it seemed likely most with BNC camera connections had it. I bought a XVR5104C-1TB. It had a cashconverters label on it ..

It comes up fine but then there's the problem - I need to log in. Password recovery is primarily via email which I guess isn't going to work. There's also a possibilty of a factory reset button on the motherboard. I cant see one.

Various videos identify possible sites to short instead of a pushbutton. So far, I haven't found one with the same board as mine, a D1620 57_090. One set of pins were hidden under a label. They looked a lot like an illustration but I'm pretty sure they'd have shorted the power supply. Another site I think is probably an optional RS485 connector. Another could match an FTDI serial port - I'll be looking at that one for linux boot info.
My board looks very like Reset password for Dahua DVR/NVR - NVR IPCAMERA SECURITY but there's a bit of juggling where they show a reset button and oe of those capacitors is in it's place. There is a 3-pin connector (unpopulated) nearby but all the pins are 0v.


Am I just wasting my time with this and should just salvage the HDD and poke around it's linux system or is there a straightforward fix ? Shorting some pins instead of a reset button ? What (cheap, resettable, UTC_supporting) DVR should I have bought ?

Sorry about the newbie stupidity.