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yakky

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Posts posted by yakky

  1. Posted

    For Dahua based units you can push the rtsp stream to a server then use VLC to stream it out. There is a great writeup on how to do it by Rory but its a site the admin here won't allow links to.

     

    The issue is web browsers don't know how to play rtsp. So you need a 3rd party plugin and configuration.

  5. Posted

    The wiring part isn't that bad, its just time consuming. You will want to research running coax vs twisted pair (CAT5/6). Each has its own advantages.

     

    As far as equipment goes there are several tiers, so we need to know your budget. If all you intend to use the system for is this particular person, you could probably get away with a pretty cheap system, however you might be wishing you had more if anything else happens.

  6. Posted

    Cellphones have very small sensors and are over 5mp.

     

    I never thought of that. " title="Applause" />

     

    I will say this, along the same topic, I don't understand how CCTV camera's produce such radically different image quality versus a consumer grade camcorder. Watching CCTV footage from an analog system, then compared to some old home movies from a SD camcorder... wow.. the camcorder is so much better.

     

    Two big factors....

     

    Lens quality and image tuning. The camcorder is going to have a much better lens than most cheaper CCTV cams. Second, the image on CCTV systems is usually tuned for wide dynamic range and isn't optimized for pleasing colors.

     

    That said, I'll put my QVIS Eye 34's against any old SD camcorder. I have older youtubes shot with a quality Canon camcorder and to me the D1 output from my modern cameras is better as far as general IQ goes.

  7. Posted

    Effective pixels is marketing speak. If its over 500 lines and you are recording in D1, you are probably not going to get anything better using that spec. In fact shopping cameras using line specs is a TERRIBLE idea. I'd rather take a 380 line TDN+WDR camera over the latest cheapo 700 line camera. Regarding CCD size, you can vary the amount of pixels in the same image sensor size, there is no rule saying you have to have a 1/3" sensor to get over 700 lines. The sensor can use smaller or larger pixels. Cellphones have very small sensors and are over 5mp. For more info on that, google "The Megapixel myth" it realates to photography in general but it will clarify the issue for you.

  10. Posted

    If stealthy low-light performance is what is needed, you can't beat a B&W Sony Exview-based camera at just over a hundred bucks. Their .0003 lux low-light performance will give MUCH better low-light pictures than the colour CNB XXX-24VF cameras without infrared. In my driveway with a streetlight in the background and the porch light on my CNB struggles and has very grainy pictures.

     

    Do you have any sample images/videos you can share? Also have you tweaked your CNB? I actually find the 24VF series to smear and have no noise, but at the expense of detail. I'd love to see them compared in real life.

  11. Posted

    Not sure if this is old hat, but I finally stumbled upon the telnet password for most dahua ip cameras and DVRs. This was posted on Rory's board.

     

    root:vizxv

     

    Also, neat development:

     

    http://tanidvr.sourceforge.net/

     

    I poked around the dvr, seems to be a lot of stuff based on LUA. Bulk of running processes are /var/Challenge buf

     

    interesting output:

     

    +++++++++++++++++++++++++++++++++

    Name:base

    Version:1.1.0

    Build date:Aug 15 2011 08:52:44

    Desc:Release1.1.0

    +++++++++++++++++++++++++++++++++

    +++++++++++++++++++++++++++++++++

    Name:multitask

    Version:1.1.0

    Build date:May 9 2011 10:07:01

    Desc:thread Release

    +++++++++++++++++++++++++++++++++

    +++++++++++++++++++++++++++++++++

    Name:buffer

    Version:1.1.0

    Build date:May 10 2011 10:46:26

    Desc:buffer Relese

    +++++++++++++++++++++++++++++++++

    +++++++++++++++++++++++++++++++++

    Name:guictrls

    Version:1.04.0

    Build date:Feb 7 2012 18:15:14

    Desc:GUI ctrls Relese

    +++++++++++++++++++++++++++++++++

    +++++++++++++++++++++++++++++++++

    Name:log

    Version:1.04.0

    Build date:Dec 5 2011 15:07:51

    Desc:build

    +++++++++++++++++++++++++++++++++

    +++++++++++++++++++++++++++++++++

    Name:user

    Version:1.03.0

    Build date:Feb 3 2012 11:21:37

    Desc:user release

    +++++++++++++++++++++++++++++++++

    17:16:38|trace CPacketManager::CPacketManager()>>>>>>>>>

    +++++++++++++++++++++++++++++++++

    Name:storage

    Version:1.03.0

    Build date:Dec 6 2011 09:56:49

    Desc:DriverManager release

    +++++++++++++++++++++++++++++++++

    17:16:38|trace main(2, /var/Challenge buf)

    LIBDVR : Version : V6V5V4:000

    LIBDVR : dvr3116E product init

    LIBDVR : 2012-9-19, today is weekday 3 time:17:16:38

    LIBDVR : DvrShowInformation

    LIBDVR : DvrGetHwidInformation(PRODUCT_TYPE) = 0

    **********************************************************************

    | SYSTEM INFORMATION

    | N52 libdvr version: 1.06.0 - Jan 19 2012 09:15:49

    | DVR ID: 0U812

    | product type: DVR

    | video channel: 16

    | audio channel: 1

    | alarm in: 0

    | alarm out: 0

    | frontboard type: 1U

    | video chip: TW2868

    | DSP chip: HI3520

    | analog audio mode: tw28XX control

    | audio surpport: Yes

    | matrix surpport: No

    | loop surpport: No

    | video tour surpport: Yes

    | real time: No

    | disk interface: SATA

    | LCD surpport: No

    | CDRW surpport: Yes

    | hardware version: 1

    | audio interface: alt

    | disk num: 1

    | net card: 0

    | dsp num: 1

    | playback num: 16

    **********************************************************************

    17:16:38|trace CVersion::CVersion()>>>>>>>>>

    17:16:38|trace Challenge Version Info:2.608.0000.1 BuildDate 2012-02-15 12:02:44

    17:16:38|trace CChallenger::CChallenger()>>>>>>>>>

    17:16:38|debug tracepoint: ../../Challenger.cpp, 256.

     

    ***************************************************************************

    * Lua Engine Version: Lua 5.0.2

    * Supported Language: English

    * SupportedVideoStand: NTSC

    ***************************************************************************

     

    17:16:38|trace path1:/mnt/mtd/Config/Config1 path2:/mnt/mtd/Config/Config2

    17:16:38|trace libkeyboard.a::CFrontboardImp::CFrontboardImp()>>>>

    LIBDVR : Frontboard use ttyAS2

    CTimerManager::CTimerManager()>>>>>>>>>

    17:16:38|trace libkeyboard.a::FrontboardCreate :0

    libkeyboard.a::CKeyboardDefault::CKeyboardDefault

    libkeyboard.a::CKeyboardDefault::getCommand keepalive

    libkeyboard.a::get def comm!

    CCommandLedBase::operate

    >>>>>>>>>>>>>has audio 1 , MatrixBoard has 0 loop

     

    Still looking for my holy grail of a CGI dir or JPEGs.... none found...

  12. Posted

    Grab a Panasonic "petcam" Good image quality and you can either grab a jpeg using an URL or have it ftp files to a server of your choice. $75 and nothing else to worry about. Also if you have any older Canon point and shoot camera, CHDK (a firmware overlay) will do what you want.

  16. Posted

    Well, I've tried the multiple firmwares - sticking with the Securus. I've changed out the welcome screen to a skyline picture of my home town (Toronto).

     

    The next step is to telnet (able to get the login & pw screen) successfully into this unit (essentially a linux box) and properly extract/modify the appropriate files.

     

    If anyone knows the appropriate login and PW (I've tried all of the common values), can you please forward.

     

    Thx.

     

    Not sure if this will work for your firmware but for my nightowl I was able to use the unix "strings" command and grep for root, got a few hits that looked like password entries. The first I was able to crack in a few minutes, but it didn't work. The second I ran for a few weeks and never got a hit. Then I got fed up with the Nightowl and sent it back.

  19. Posted

    Raw specs are what makes something what it is, are you a brand name shopper?

     

    Unsampled D1 footage? They say real D1, do you mean recorded at a lower bitrate sort of thing?

     

    For someone who is new to the CCTV it might be best off to start small and really learn/see the difference for myself. Right now I have live view cameras which are doing me no good...what about a "cheap" single channel DVR? Get all the quality you rant about but dropping the channels I don't need/have cams for to compensate the price? If I can record just my Hitachi for now it will make me sleep better until I can afford to drop decent money on a multichannel DVR.

     

    Raw specs are often fudged. I'm not a brand shopper but I do trust certain brands to deliver a good user experience. Perfect example is how many of the DVRs claim to record in D1, but they upsample the image to D1 size. It takes more space, but offers no more resolution than CIF.

     

    Quality I'm ranting about? Dude.... you have me laughing. Buy the cheapest thing you can find. Go for it. You are so smart, everyone is trying to rip you off with their higher priced items. See you at Walmart!

  23. Posted

    The Dahuas do require activex if you don't have the client, they make a client for OSX and Linux that work well.

     

    Honestly the Swann or Lorex will be ok as long as they really record in D1, but the Dahuas have a bunch of neat features built in and don't seem like a kids toy.

     

    Cameras is where you really want to spend your money. Forget the Swann or Lorex ones.

  24. Posted

    I wonder how much crunching it can do. I guess if you used a USB encoder, it might be able to keep up. That said, if compact size is your desire, the actual boards on most DVRs are so small now that you could come up with a very small case.

  25. Posted

    I'm going to look through those cheap H264 DVRs on eBay and see if any are D1

     

     

    How much money do you think you are going to save on a cheap POS DVR versus getting a quality unit? You can buy a good 8 channel unit for $150.

     

    Link?

     

    Well seeing how I have $0 and am having a hard time finding work locally, a $60 D1 DVR might save $4,000 worth of AV equipment in my truck from being stolen. What's the difference between a $60 and $150 DVR besides it does not include a cheap Chinese HDD that I would rather install myself, a trusted model HDD. Then I can upgrade in the future to a better 4ch and use the cheap 4ch for just door cams where the target is so close extreme detail will not be necessary.

     

    If your goal is to save the $4000 worth of equipment, a DVR system isn't your best bet. Lots of other ways to protect your truck. What is the difference in a $60 and $150 unit? Real D1 recording vs upsampled. advanced scheduling features, better motion detection, better interface, after sale support, a real warranty. I had a cheaper DVR, a NightOwl, and Newegg was nice enough to take it back. The replacement Dahua based unit is night and day with the NightOwl. I'd send you a link but the forum moderator doesn't allow links to Selly's Nurplus.

     

    But if you are a person that compares specs and can't comprehend there being more to it than just raw specs (which are from the seller anyway), then yeah, get the cheapest D1 DVR you can find.

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