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How web-broadcasting works

Webcams are those handy little cameras that attach to your PC and send images to a web page that can be viewed by others. This enables you to share daily life events with friends and family in other parts of the country or the world, or to arrange a videoconference with colleagues and maintain long distance relationships of all kinds. Of course the number of ways to use this technology is limited only by your imagination.

Web Cameras

But before you buy a webcam, it pays to understand a little about how the technology of broadcasting images over the Internet works. Of course, if you’re a full bottle on this already, you can skip this section and go straight to browsing the options on Myshopping.com.au where you can compare products and suppliers, their specifications and prices.

Webcams provide ‘real time’ images of people; places and events that can be viewed ‘live’ on a web page. The broadcasting end has a camera that captures the images, feeds them into a computer to an ISP and out to viewing pages across the Internet. There are two different types of broadcast: streaming images, where the images are a constant stream downloaded in video format; or Java, where the images are captured at fixed time intervals and refreshed on the web pages at a rate fixed by the broadcaster.

The Applications – What are you intending to broadcast, and to whom?

There is a wide range of uses of webcam technology. Some examples include personal ‘Big Brother’ style diaries, sharing of family events, workplace security, video conferencing, virtual tourism, road traffic management, weather watching, event broadcast and a host of others.

Before you make a choice about any webcam equipment, it helps to decide exactly how you want to use the technology, in other words, what you are intending to broadcast. This decision will impact upon the type of camera you use, and how you use it.

A second consideration is, who will be viewing your content? What level of quality is expected? This will help determine the type of camera you use, the software involved and your Internet connection. Of course, your Internet connection may be a limitation on how much you can do.

The requirements for video conferencing are different from the requirements of workplace security, which are different again from the requirements of sharing a family event.

The physical components

There are a number of physical components required to make web cam technology work. At the top of the list is the camera itself. Then, depending on the type of camera you use and the way in which you want to deliver the content to the Internet, you may need to incorporate video capture hardware in your computer. Some software is required to help you process the data, and Internet connection is required and a web page into which the data is fed.

CAMERA CHOICES

Your choice of camera depends somewhat on what you are intending to show. If you need to reach a large public audience yo may want good quality camcorder or megapixel camera that captures high quality images. If it’s just for seeing who’s at your front door or keeping an eye on the kids in their playroom, then it may not need to present high quality images. If you are intending to use it outdoors, it will need to be weather proof and you may need to consider sun and UV protection. Available power supply and any robotic requirements for camera movement and focus are extra considerations.

Dedicated webcams

The most basic webcams connect to a PC using a simple USB connection. A wide range of cameras with accompanying software at a range of prices is available for this type of application. Simply search though Myshopping.com.au to compare prices and specifications. Dedicated webcams are simple to install and easy to use, but come with limitations that affect the quality of the images, such as low number of frames per second (refresh rates) and resolution (pixels per inch).

Camcorders and security cameras

Higher quality images and more camera control come from using camcorder and security cameras. To use these devices you will need to add a video capture card to your PC. Once you have that installed however, you can use a wide range of cameras from broadcast cameras to miniature spy cameras. You can include variable lens options, filters for daylight and low light situations, as well as robotic controls for panning and focus adjustments. You can search through Myshopping.com.au for camcorder selections.

Integrated cameras

An integrated camera combines the camera and the optical hardware with a video server, and as such requires no additional software. They can be used in network situations or as stand-alone devices for monitoring progress on a construction project for example.

Megapixel cameras

Network megapixel cameras combine network capability with high quality digital camera technology. These cameras offer excellent quality but this creates large files sizes, therefore they have limited application in constant streaming video. However for interval refreshed archive image collection, they are ideal, providing a constant record and high quality. You can search through Myshopping.com.au for digital camera selections.

SOFTWARE

If you are not using an integrated camera solution, you will need to install an encoding program like Webcaster or MediaCaster to transfer your images to a web page.

At the receiver end, when web surfers browse the internet and wish to view live video on the web for the first time, they will need to download dedicated applications that show the content such as an ActiveX control, Windows Media player, Flash player or the like.

INTERNET CONNECTION

Finally, you need an Internet connection. The hardware you will need may include a modem for dial-up connection, or modem/router for a broadband solution. Naturally the higher the quality you want, or the faster refresh rate you want, the more bandwidth you will need. ADSL (Broadband) is going to offer you the best solution, but keep in mind what your Internet connection when you are making choices of cameras and feeder software.

Webcam applications work well with wireless solutions. Make sure when you are purchasing a camera or network video solution that it is compatible with any wireless system you may be using in a LAN.

Key considerations

The specifications that are variable with webcam applications, and are affected by camera type, web interface and Internet connection, include the number of frames per second and the image resolution.

Frames-per-second is the number of times a still image flashes by in a second to give the appearance of moving pictures. In Australia, the standard television PAL format is at 25 frames per second. A webcam with up to 30 frames per second will show normal video images. But the more frames per second you demand, the more bandwidth, memory and processing power is required.

Resolution is measured the number of pixels per inch. High quality photographs require a high resolution. But the standard for web images is a low 72 dpi. Higher resolution images will not be of any better visual quality, just slower to upload and download.

Use Myshopping.com.au to compare different webcams, camcorders and digital cameras. You can compare the prices and specifications of the different products and brands, and a wide range of reputable vendors.

Did you find this article useful?  For more useful tips and   hints, points to ponder and keep in mind, techniques, and insights pertaining to Internet Business, do please browse for more information at our websites.

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Content is what brings people to a site. Websites that provide fresh contents tend to be more popular than those that don’t. Search engines tend to reward websites that provide updated contents by giving such websites a better placement in search results. Providing regular content is the best way to make your website appealing both to visitors and search engines. This will subsequently lead more people to your website.

Unfortunately, providing site content regularly is not an easy job for many people, especially if the content is in the form of articles or require programming knowledge. Even a person who is an expert in a particular field may run into difficulties when it comes to writing. Even worse, not all topics can be easily written. Clearly, fresh content is important but providing content in the form of articles regularly can be a devil of a job .

It will be a great delight if you can still publish fresh contents on your website without having to carry out too many writing tasks. Although article is the most popular types of website contents, there are other types of contents for website. Two of the them are images and videos. Notice how popular websites that provide video clips to visitors today.

Of course for some people creating video clips regularly is not an easy task too. Building a website that receive user-submitted videos seems a cool idea, but you have to spend some times everyday to check the submitted videos. In addition, you need to use a web hosting service that provides a large amount of bandwidth and disk space.

Nevertheless, every problem has a solution. With the PC technology today you may consider to make use of your webcam to develop contents for your website. It means that the content is in the form of live video feeds. There are some advantages of using this technique. First, the content will be updated regularly and automatically. Second, the content will be unique. Publishing live videos is different from providing contents which are created by automatic content generators.

Now, what kind of videos can you provide? The answer of course depends on what the main theme of your website is. If your website is about a beach vacation you can provide the situation of a beach around your home, in real-time. Another example is to publish your the dynamically updated pictures of your home aquarium on the internet. The possibilities are endless.

There are experiments conducted by some people to prove the effects of music to the growth of plants. You can of course make a similar experiment and then by using two or more webcams you can publish the conditions of two plants with different treatments, where one of them is given a music in the morning everyday. Then, just let visitors visit your website regularly to find out which plant grows higher.

A web camera is an affordable tool. Nowadays you can get it for less than $50. In addition, broadband internet connections that are suitable to provide live videos is quite common today. Finally, by using your PC, web cameras and an internet connection you can provide fresh contents for your site visitors automatically without spamming.

Wireless web cameras transmit the picture by utilizing the radio signals or through the network.

If you like to purchase the web camera than it is essential to consider proper device to get the details about the web camera. It is essential to go through the specifications to get the details about the web camera available in the market.

Here are some important things to be considered to get the proper wireless web camera.

1. It is essential to know the based of the wireless webcams. You need to consider types of monitor you have. It is important to select the wireless webcam based on the design of the monitor. In the modern time most of the people are using the flat panel monitor to get the suitable web camera. In the market the web camera are not available in only for flat monitor. It is also available for CRT monitor too. Therefore it is important to select the wireless web camera according to the design.

2. The second important one is the lens of the camera. It is essential to select the proper size (PIXEL) lens as per your needs. It is important to select either plastic or glass lens. The glass lens gives proper quality images rather than the plastics. The lenses are available in manual or automatic design so you need to select the lens as per your needs.

3. The wireless web camera is use for communication purposes so it is necessary that you need to select the camera with in-built wireless microphone.

4. The wireless web camera uses AC power or batteries. It is up to you to select the option of power supply. If you purchase the battery operated webcam than you need to charge or replace the batteries at certain time.

5. The frame rate is one of the important criteria for selection of wireless webcam. The normal webcam can produce 24 images per second. The high frame rate (of 30 or more frame rate) camera is also available too.