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jumpjack

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Posts posted by jumpjack

  1. Posted

    I'd need a pan/tilt head supporting absolute positioning, but I can only found products costing hundreds of euros; I am not  professional, so I can't afford such a price for an amateur project; even just one axis movement would be enough, in a first instance, for testing;  I need a 1° positioning precision or better. But the most important thing is that I need to send commands over wifi, or bluetooth, or as as last chance over cable, but not by 433MHz/866MHz remote control.

    Any suggestion?

    Should I look only for PELCO-supporting devices, or do also PTZ devices support absolute positioning?

    My budget is 100$. Even a  china-product on Aliexpress or Banggood would be fine... but I can't find it.

     

  6. Posted

    Stream coming from my DVR can only be viewed using Internet Explorer as it requires an ActiveX.

    I'd like to see the stream using Firefox or even a cellphone, so I need to "hack" it a bit.

    Some reverse engineering reveals that the stream should be RTP on port 54000, but I did several test with Firefox, Realplayer and VLC, but I can't see the stream.

     

    Please note that I currently don't know if I have to specify any file name after urk xxx.xxx.xxx.xxx:54000 to access the stream, so any suggestion also about this topic would be appreciated.

     

    The DVR is a china clone named DVR8204 in the shop where I bought it, but "TW2700 DVR" by examining its HTML code.

     

    Strange thing is that by looking at the .js file inside the DVR I figured out that rtp ports for 4 video channels should be 64000, 64004, 64008 and 64012, but actually a port sniffer reveals that stream is coming out from port 54000 after the DVR receives "something" from ActiveX on port 6610.

  9. Posted

    I am not familiar with your dvr but I will say that you cannot.

     

    It is a proprietary software based on linux. You would actually need an emulator program.

     

     

    Emulator is not the correct word here.

     

    This DVR appears to be a Chinese made Linux (embedded) DVR. Your only option would be to take the drive out and plug it into a computer and see if you can mount the drive. Being that it is Linux the drive is probably formatted ext2/3/4 or some type of journalized filesystem which will not be playable in Windows. You could try grabbing a Linux boot CD (Ubuntu install cds for example) and seeing if you can mount the drive. Even if you do mount the drive, the recordings are probably not stored in a standard video container.

    I know all of these, that's why I asked for a method to use the DVR itself to access the recordings.

  11. Posted

    With most types of broadband, the router is connected as long as it's on, and connects automatically when powered up. If you have to log your PC into the router and click a "Connect" button to get online, though, it sounds like your internet connection may be using a form of PPPoE (Point-to-Point Protocol over Ethernet, as opposed to PoE, Power over Ethernet) - some PPPoE providers do require you to connect manually, similar to a dialup connection.

    PPPoA (I think "over ATM").

     

    If this is the case, there may be no way to do it. You could try firing up the PC, making the connection, then shutting down the PC and seeing if it maintains the connection, but if the router disconnects automatically after a period of inactivity, you may be SOL there as well.

    I tried... but I can't see the router from outside. I'll do further tests.

  12. Posted

    you must be more specific about the problems you encounter to allow us to help you.

    WHat does it happen upon trying to connect to the IP corresponding to DVR (both local and public)? Which error messages?

     

    You should be always able to connect to the DVR from your local network using an IP like 192.168.xxx.xxx, just read on your DVR (by using TV connection rather than web access) to see which local address it has been assigned, probably it changed since last time you tried.

     

    Once you can connect locally, you can restart configuring properly it.

  18. Posted

    Using a different PC in same local network, I eventually obtained some results... although weird:

     

    Working settings:

    130716_1.jpg

     

    Uploaded with ImageShack.us

     

    130716_2.jpg

     

    Uploaded with ImageShack.us

     

    Weird things:

    *IE 8 used in both PCs, even same built.

    *Same settings on both IE.

    *Same router, no settings changed.

    *Same OS (Win XP SP3).

     

    Weirdest:

    look at second picture:

    *why is IE downloading from local 192.168.0.5 although I clicked DOWNLOAD button on remote page on 151.xxx.xxx.xxx ?!?

    *why Port Explorer shows port 20000 is used on this PC rather than on remote like for streaming and playback?!?

     

    Others:

    * why is the activeX using port 54000 for any channel, although script specifies 64000 + 4*ChannelNumber?

    * what the hell is port 6610 for?!?

    * why manual of a DIFFERENT unit recommends to open ports 54000-54030, 6610 and 3180?!?

     

    Have fun with finding the answers!

  19. Posted

    no manufacturer label on the unit, just a serial number Google can't find...

     

    I deleted the activex (doesn't it exist a better method to uninstall plugin from IE8 than roughly deleting files from windows\system32 ???) and reinstalled it, nothing changed.

     

    Could IE8 by the cause of the trouble? I just tried the "download" option of the DVR, but IE8 prevents script from opening the window to select folder to save file to! same script works in office PC, which has IE7 installed (but which can't access DVR from remote... ).

     

    Anyway, inserting download path by hand, download starts, file is created... but it never grows, progress gauge does not increase, nothing happens.

     

    "Fun" to see that download script use an even additional 64030 port...

     

    Even more funny to see is that in the DVR CD there IS a Viewer SW (I didn't find it before because it's in DOC folder ), but it can just view already downloaded MJPG files!

  21. Posted

    Although my DVR has no built-in monitor, I suspect this is the original manufacturer, as looking around for patent n. 200830253597.6 I found this manual:

    http://www.cn-dvr.com/manual/J104English.pdf

    If that's true, the manufacturer would be "ShenZhen Skybest Electronic Co.,Ltd.".

    Never mind, it's not it (although it IS also available on same online store: http://www.kingshopitalia.com/dvr-videoregistratore-4ch-mjpeg-500gb-p-142.html)

     

    What about this "Vtek" site?!?

    http://www.vtek.com.br/

     

    How do I browse it???

  22. Posted

    As far as identifying the unit... are there ANY labels on it with part, model or serial numbers beyond the link you posted? I'm surprised scorpion hasn't stepped in here, he can usually identify them just by looking at the picture

    after long searches, I came to this weird page comlpaining about DVR cloning!

    http://www.cn-dvr.net/enindex.html

     

    Although my DVR has no built-in monitor, I suspect this is the original manufacturer, as looking around for patent n. 200830253597.6 I found this manual:

    www.cn-dvr.com/manual/J104English.pdf

    If that's true, the manufacturer would be "ShenZhen Skybest Electronic Co.,Ltd.".

     

    First picture is very similar (but not the same) to my device. But the device in that manual completely lacks external alarm inputs, so I don't know what to think...

     

    I'll check for labels on the unit.

     

    there simply are no standards when it comes to DVR remote viewing

    I thought "MJPEG" was a streaming standard...

     

    Although it does soud like a port problem here, its worth noting that I have had some problems with some of the cheaper DVR's that use the CMS plugin for IE.

     

    Where even locally, video would not be displayed, and deleting the plugin and deleting IE history and letting it download a fresh copy of the plugin was the only way to cure the problem.

    Do you know where to download from the CMS plugin, besides... from my DVR?

     

    I'll try deleting it and reinstalling from scratch. But... how do I uninstall an IE activex/plugin?!?

  23. Posted

    So WHY are you forwarding the ports in the 600xx range? Do you know that those are the ports used by the DVR?

    Just guessing: I "downloaded" from the DVR a .js file containing scripts associatd with the video straming page, nad the sources "talks" about port 64000 + 4 * Channel , and activating debugging in Internet Explorer shows Channel allowed values are from 0 to 3.

     

    I wonder how I can exactly determine the actual manufacturer of my device and how to find a complete manual.

  24. Posted

    Video Server E and S are 2 different versions of remote video software for AvTech DVRs.

    As its a stand alone DVR without a standard OS, just put its local IP on the DMZ and see if it works then.

    Although it is unlikely, your ISP might be blocking those ports. If it still doesnt work after the DMZ then try changing ALL the ports.

    I didn't yet understand if this is actually an AvTech, anyway I know it mounts embedded linux.

    What do you mean by "changing all the ports"?

     

    BTW router is Sitecom WL-613, not "54G".

  25. Posted

    Manual does not say a word about video ports (but actually I received a generic manual for this DVR family rather than its own).

    Router is sitecom 54g, and this is my port forwarding (attached).

    But ShieldsUp! says my 640xx ports are closed! Why?!?

     

    I found several DVR viewers, but none works for me:

    http://www.apexcctv.com/p-943-4-channel-avtech-nvr.aspx

    http://snavtclient.epipe.com/readme/all

    about12741.html

    http://www.apexcctv.com/p-510-4-camera-60-fps-security-dvr.aspx

     

    By the way, what are "Video Server E" and "Video Server S", talking about DVR streaming?

    porte.JPG.42272c0578e974354f63f14c605165d7.JPG

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