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tomcctv

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Posts posted by tomcctv

  2. Posted

    No, you are going to need a PTZ decoder (even though you are not using the pan/tilt) to decode the output of the DVR into a output to control the lens.

     

    the pelco also has on screen o/s with ptz controls

    Local and Remote PTZ Control

    Third-Party PTZ Protocols

     

    the moxa will auto set your usb to com port 2 in the on screen ptz set-up. just looking at cost set-up for you plus if you just use a controller you will not be able to control your ptz from internet viewer.

     

    extra ptz controller $120

    moxa $40

  6. Posted

    I made it work through web interface, can see it with good quality and good frame rate. Did also make it work through internet, configured my router with dyndns.

     

    But now i can't make it work with the remote console program. Each time i try to access it only shows 1 frame and freeze.

    I tried it in 4 different computers.

    2 intel based and 2 amd based, win xp and vista. I each of these i can view it with the web application but now with the Remote Console.

     

    HI Braven.

     

    so you have it now working on web interface ??? your problem now is you are using a disk with remote console. (DO NOT USE THE DISK) remove remote from your pc.

     

    and do the following.

     

    1, make sure your port on your eb1304 is set to 5550. (also port on router)

    2, when you have the web interface working with all 4 cameras. on the interface screen you have icons on the right side. click on the second one up from the bottom. it will start to download the remote console from your dvr automatic. and it will also load remote console icon to your desktop.

  8. Posted

    Hi parushton.

    scorpion has given you very good advise. but with him being in a very hot part of the world florida. (lucky guy) he will not know about your internet provider.

    sky broadband will block external connection to your router. and they will not give you or let you use a static ip. this is a big problem in the uk with sky most people have to change or add another phone line and broadband to get past this. also talk talk and virgin broadband are trying to do the same. however if you talk to sky and tell them what you are trying to do they might unlock that side of the router (i take it is a sky netgear ?) but they will add a monthly charge.

  9. Posted

    I have found one site called thiscentury.co.uk

     

    But im trying to find more, does anyone know any?

     

     

    thiscentury do NOT stock cameras. a guy in kent tried to order from them. now he is only 7.5 mile from them.

    first you have to pay up front

    you cant collect

    and its 15 to 20 days delivery. yes tweety very cheap cameras if you get them in the end.

  11. Posted

    At its most basic level, compression is performed when an input video stream is analyzed and information that is indiscernible to the viewer is discarded. Each event is then assigned a code - commonly occurring events are assigned few bits and rare events will have codes more bits. These steps are commonly called signal analysis, quantization and variable length encoding respectively. There are four methods for compression, discrete cosine transform (DCT), vector quantization (VQ), fractal compression, and discrete wavelet transform (DWT).

    Discrete cosine transform is a lossy compression algorithm that samples an image at regular intervals, analyzes the frequency components present in the sample, and discards those frequencies which do not affect the image as the human eye perceives it. DCT is the basis of standards such as JPEG, MPEG, H.261, and H.263.

     

    Vector quantization is a lossy compression that looks at an array of data, instead of individualvalues. It can then generalize what it sees, compressing redundant data, while at the same time retaining the desired object or data stream's original intent.

     

    Fractal compression is a form of VQ and is also a lossy compression. Compression is performed by locating self-similar sections of an image, then using a fractal algorithm to generate the sections.

     

    Like DCT, discrete wavelet transform mathematically transforms an image into frequency components. The process is performed on the entire image, which differs from the other methods (DCT), that work on smaller pieces of the desired data. The result is a hierarchical representation of an image, where each layer represents a frequency band.

     

    Compression Standards

     

    MPEG

    Stands for the Moving Picture Experts Group MPEG is an ISO/IEC working group, established in 1988 to develop standards for digital audio and video formats. There are five MPEG standards being used or in development. Each compression standard was designed with a specific application and bit rate in mind, although MPEG compression scales well with increased bit rates. They include:

     

    MPEG-1

    Designed for up to 1.5 Mbit/sec

    Standard for the compression of moving pictures and audio. This was based on CD-ROM video applications, and is a popular standard for video on the Internet, transmitted as .mpg files. In addition, level 3 of MPEG-1 is the most popular standard for digital compression of audio--known as MP3. MPEG-1 is the standard of compression for VideoCD, the most popular video distribution format thoughout much of Asia .

     

    MPEG-2

    Designed for between 1.5 and 15 Mbit/sec

    Standard on which Digital Television set top boxes and DVD compression is based. It is based on MPEG-1, but designed for the compression and transmission of digital broadcast television. The most significant enhancement from MPEG-1 is its ability to efficiently compress interlaced video. MPEG-2 scales well to HDTV resolution and bit rates, obviating the need for an MPEG-3.

     

    MPEG-4

    Standard for multimedia and Web compression. MPEG-4 is based on object-based compression, similar in nature to the Virtual Reality Modeling Language. Individual objects within a scene are tracked separately and compressed together to create an MPEG4 file. This results in very efficient compression that is very scalable, from low bit rates to very high. It also allows developers to control objects independently in a scene, and therefore introduce interactivity.

     

    MPEG-7

    This standard, currently under development, is also called the Multimedia Content Description Interface. When released, the group hopes the standard will provide a framework for multimedia content that will include information on content manipulation, filtering and personalization, as well as the integrity and security of the content. Contrary to the previous MPEG standards, which described actual content, MPEG-7 will represent information about the content.

     

    MPEG-21

    Work on this standard, also called the Multimedia Framework, has just begun. MPEG-21 will attempt to describe the elements needed to build an infrastructure for the delivery and consumption of multimedia content, and how they will relate to each other.

     

    JPEG

    Stands for Joint Photographic Experts Group. It is also an ISO/IEC working group, but works to build standards for continuous tone image coding. JPEG is a lossy compression technique used for full-color or gray-scale images, by exploiting the fact that the human eye will not notice small color changes.

     

    JPEG 2000

    An initiative that will provide an image coding system using compression techniques based on the use of wavelet technology.

     

    DV

    A high-resolution digital video format used with video cameras and camcorders. The standard uses DCT to compress the pixel data and is a form of lossy compression. The resulting video stream is transferred from the recording device via FireWire (IEEE 1394), a high-speed serial bus capable of transferring data up to 50 MB/sec.

     

    H.261

    An ITU standard designed for two-way communication over ISDN lines (video conferencing) and supports data rates which are multiples of 64Kbit/s. The algorithm is based on DCT and can be implemented in hardware or software and uses intraframe and interframe compression. H.261 supports CIF and QCIF resolutions.

     

    H.263

    Based on H.261 with enhancements that improve video quality over modems. It supportsCIF, QCIF, SQCIF, 4CIF and 16CIF resolutions.

     

    H.264

    H.264, also known as MPEG-4 AVC (Advanced Video Coding), is a video compression standard that offers significantly greater compression than its predecessors. The standard offers up to twice the compression of the current MPEG-4 ASP (Advanced Simple Profile), in addition to improvements in perceptual quality. The H.264 standard can provide DVD-quality video at under 1 Mbps, and is optional for full-motion video over wireless, satellite, and ADSL Internet connections.

     

    DivX Compression

    DivX is a software application that uses the MPEG-4 standard to compress digital video, so it can be downloaded over a DSL/cable modem connection in a relatively short time with no reduced visual quality. The latest version of the codec, DivX 4.0, is being developed jointly by DivXNetworks and the open source community. DivX works on Windows 98, ME, 2000, CE, Mac and Linux.

     

    Terms

    Lossy compression - reduces a file by permanently eliminating certain redundant information, so that even when the file is uncompressed, only a part of the original information is still there.

     

    ISO/IEC

    International Organization for Standardization - a non-governmental organization that works to promote the development of standardization to facilitate the international exchange of goods and services and spur worldwide intellectual, scientific, technological and economic activity.

     

    International Electrotechnical Commission - international standards and assessment body for the fields of electrotechnology

     

    Codec - A video codec is software that can compress a video source (encoding) as well as play compressed video (decompress).

     

    CIF - Common Intermediate Format - a set of standard video formats used in videoconferencing, defined by their resolution. The original CIF is also known as Full CIF (FCIF).

     

    QCIF - Quarter CIF (resolution 176x144)

    SQCIF - Sub quarter CIF (resolution 128x96)

    4CIF - 4 x CIF (resolution 704x576)

    16CIF - 16 x CIF (resolution 1408x1152

  16. Posted

    hi rory.

     

    the flash i have is master reset not full software flash. its 1am here so to late to do anything today for you but i can email the flash to you tomorrow. so dont do anything with your dvr till then.

     

    also there is another problem with the eb and sa dvrs the internet will no longer work on then the licence has ran out java/ active x they expirered on the 9/9/2009 so if you want to put it on the net just change the time and date on the pc you will be using to set it up to before 9/9/2009

     

    but the good news all avermedias work on iphone 4-8-16-32 screen

  18. Posted

    Hi jonno. yes i am going along with avermedias uk tech manager.

     

    are you going ????

     

    Hi Tom,

     

    Yes, I hope to be there. It's local to me so it'll be a shame to miss it. Would be nice to say hello.

     

    John.

     

    hi john. that is fine. then i can put some work your way. i have a few customrs in london but its a 410 mile round trip for me. you do know about the dvr offer ???

  19. Posted

    hi all in the uk it is known as the appolo. and it is well over priced. you can only back-up 1 camera at a time. h264 on cif. use d1 and it used to lockup. notice they never showed a demo of mobile (cellphone) working. that was also a problem.

     

    i would look at

     

    avermedia eb 1304 net or like guys on here have said take a look also at the AVtech.

     

    let them carry on selling paintballs . i dont think you will get back-up from ebay sales

  21. Posted

    Hi Gordon.

     

    i think you are will find the spec on the dvr you posted is the same as most d1. mpeg 4 systems. take a look at the avermedia. you get full uk support. (not that you will need it) it is a very simple system to use. price wise well in your budget which means you can spend more on the cameras.

     

    take a look at this system below vga or tv output / sound/ 4 camera inputs/ internet viewer/mobile viewer. 30 days recording at 25fps

     

    they is a dealer not far from you in london. and if you would like to see a demo i can let you dial into mine at home.

     

    http://www.avermedia.com/AVerDiGi/Product/Detail.aspx?id=151

  23. Posted

    do any installers use the following dvrs from avermedia the : sa /eb /seb

    4-8-16 and 32 they have a login problem i have the instructions here from avermedia to get passed the problem.

     

    this does not affect the nv cards.

  25. Posted

    I dont have any problems with port 80 and Avtech DVRs here. If i did though i would normally change to port 81.

     

    AvTech apps use Java also, if your Java is bad it wont work.

    Try it in Firefox, it should work unless it is a very old version.

     

    One way to get around any current OS issues it is to install Virtual Box and install default Windows XP inside that, just for the AvTech program. Ive actually done that a few times for other DVR apps that dont work in vista.

     

    Also, Scorpion, a member on this forum, knows alot more about the AvTechs than most.

     

    On a side note, AvTech has pretty much the most awful network software ive ever seen and the evidence sharing is just as bad.

     

    hi rory. yes you are right port 80 or 81 is fine for IE but over smartphone nokia or others will not let you accsess port 80. vodafone usb works the same as smartphones so moving to high ports is best.

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