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How's it done?
Well, the basics.... (I'm assuming you have some knowledge of computers and the internet here....) I use two PCs running Windows ME (a pentium 1400 and a pentium 450) which are networked together. One computer has a Hauppauge WinTV card with a video input, which I use to capture the video image from my camcorder downstairs. My connection to the internet is (at last) ADSL, at 256k upload and 512k download - when British Telecom decide to make it work.... I have 3 cameras, a basic Cannon 8mm camcorder which I had sitting in a cupboard for years, and finally found a use for! (I started off using a Creative VideoBlaster cam, but the quality was very poor - you can see the difference in the "CamPics" section of my PICS page....) It sits on a tripod on top of my main monitor, and has a few metres of cable on it, so I can move it round a bit, which I have done on occasions..... and two 3com "Home Connect" USB cameras, which work far better in lower light so I can use them in the bedroom for the BedCam. To get the pictures from my computer to the web-site uses a programme called Webcam32, and it captures one frame of video every 30 seconds (I can change this, but 30 seconds works quite well) and sends it via FTP to my website. It's this software that also adds the text captions and the over-layed images on the pictures. Once each picture is on the website, a javascript code on the cam page tells your browser to go and get a new picture every 30 seconds. The non-java cam pages use a piece of HTML code which makes the entire page re-load from the server every 30 seconds, which takes longer and also means you lose the picture while it's re-loading. There is another line of code in there that tells your browser not to look in the cache (a temporary storage file on your computer which contains images and text). If this code wasn't there, the picture wouldn't update. The reason you will occasionally get a "broken image" symbol instead of a cam pic for a few seconds is my host server (ISP) is in Florida, USA - and the pic is being sent from London, UK. As with any file being FTP'd, once the pic has been sent it replaces the old version, but it's not available until the sending computer and receiving server have hand-shaked.... which can take a few seconds with an international connection. Now bear in mind the volume of traffic on the net at busy periods and the fact that I send a new image every 30 seconds.... there will be a few times when you get a broken image. Sad fact of life with the internet at the moment. The site can be accessed using a few different URLs, www.robcamlive.com, www.robcamlive.net, www.robcamlive.org, www.robcamlive.co.uk and www.robcamlive.tv - as well as my first URL http://welcome.to/robcamlive - although this last URL will put an ad banner up and I'm going to phase it out eventually.... but about 2% of visitors to my site still use this URL - despite it being changed on all the listings sites. I guess people have old bookmarks they still use.... but they all go to the same site on the same server. Graphics-wise, I use Micrographx Webtricity, Paint Shop Pro and Gif Moviegear to create and edit all the graphics and pics on the site. Paint Shop Pro and Gif Moviegear are available as shareware for 30 day trials, Webtricity isn't, but I strongly recommend all of them - there's things that they can't do, but what they will do is awesome.... If you want to know more about setting up a cam site, get in touch with me - my contact details are on the Stuff page!
This site always has been designed and checked to work equally well on MSIE and Netscape and it will work properly on all versions of MSIE, and Netscape up to version 4.7. However - Netscape 6 is such a complete disaster of a browser, failing to work with Java and ignoring recognised HTML code that you probably won't see much if you use it. You certainly won't be able to see any of the java cams. You will also have major problems on most sites that use secure pages, such as shopping carts and credit-card payments, or internet banking. The only way Netscape will realise what a total fuck-up they have produced is by you not using it. If you want to use Netscape over MSIE then use version 4.7, which is a very good browser and email programme. Although it does have problems displaying some ".jpg" graphics. It is available for free download from their website. |
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