Posts tagged tutorial
A tutorial on cookies
Dec 13th
Literally, a ‘Cookie‘ is referred to biscuits. But in computers, a Cookie has a different meaning. Even those who know about it, think that cookies cause damage to the computer. In this article let us learn about cookies and their usage.
What is a Cookie?
Cookie is a text file created by the webserver and stored in our computer. Let us see what is the purpose of this text file.
Generally when a client computer connects to a server they both get introduced and start sharing information. The server will identify the computer and this relationship will continue until the connection gets discontinued.
But the connection between the web server and a client computer is ’stateless’. After serving the information that the web client requested, if the same client sends another request, then the web server will not know that it is the same person. Instead it will treat is as a new person and serve the information. Cookie is used to change this ’statelessness’ in the web server.
With the use of cookies, when a web client connects to a web server, the web server will create a cookie file and write some information about the web client and store it in the web client computer itself. When the same web client connects to the web server next time, the web server will see the cookie file in that computer and will know about the client.
Why to use a cookie?
Personally there is no use of storing the cookie in our computer. But it helps the web server a lot. Web servers creates cookies for two main reasons.
- To identify the visitors
A server will normally write details like when did the visitor visit the website, which are the pages he viewed, what is his name etc in a cookie. When the same person visits the same website again, the server will display his name and welcome him, and show those webpages related to his previous visit and also show the changes since his last visit to the website. In short, cookies are used to personalize the website for the visitors.
- To record activities
Cookie is also used to record the activities between the web client and the web server and used to rectify problems that may occur during the session. For example, imagine that you are filling out a form with many fields. After filling the first page and moving to the second page if the computer hangs and you had to restart the computer. Then if you restart and go back to the same webpage, the webserver will know the details that you already entered from the cookie and hence will just show the second page directly. If there was no cookie then you will have to type from the first page again.
Common Myths about cookies.
- Cookies spread viruses. This is a false statement. Cookie is a text file, therefore virus cannot spread through viruses.
- Cookies get stored in any folder in the computer. This is also false. Cookies are also stored in a specific folder only. For example in c:\windows\profiles\yourname\cookies folder, Internet Explorer creates one text file for each cookie. Netscape navigator will store all cookies in c:\Program files\netscape\users 50\default\cookies.txt file.
- Using cookies, the other files in your computer can be read. This also is false. Websites just read their own cookies and do not read other cookies or other files.
- From other cookies webserver will know which websites you visit. This is also false. A website will only open its own cookies. It will not read other cookies.
- You can’t read a cookie. This is also false. Cookie is just a text file. You can read cookies using any text editor like notepad.
How to read a cookie file?
You can use a software like ‘Cookies Cruncher’ to read cookies. You can download cookies cruncher fromwww.rbaworld.com
In Netscape navigator all the cookies are stored in a single file. You can read it using Netscape navigator. Select ‘Edit->Preferences’ and click on ‘Privacy & Security’ and select ‘Cookies’. Now click on ‘Manage Stored Cookies’.
Web Promotion tutorial
Dec 13th
Consider you have created a personal website with some useful information for others to see. This website will be useful only if other people visit your website. How to make other people visit your site. This article discusses about how to promote your site.
How can you make your website address known to everybody. To your friends and relatives it is possible to tell your website address directly to them. You may even distribute notices in your town. But how to tell your website address to the whole world. This is where the Search Engines come in handy.
Almost everyone uses Search engines to search for information or products in the Internet. Then the search engine will display a list of website results based on the searched keyword. If your website is in this result returned by search engines then people will visit your website from around the world.
There are at present billions of websites today. In each website there will be atleast ten pages. Some websites will have many pages. So the website you create is just one of these so many websites.
Therefore when the search engine returns results, if your website is not listed in the first four pages of the results then chances of people visiting your site is less. So you have to create your site such that it appears in the first four pages of the search engine results. For this you need to optimize your website for search Engines. This is called SEO (Search Engine Optimization). To learn SEO techniques, first you need to understand how search engines operate.
How does Search Engines identify and index your website.
Search engines use programs such as Spider, Web Crawlerm Robo, Bot etc for finding and indexing websites. These programs will keep searching for new websites and read the content of the pages in the websites and understand what these pages are about and index those pages accordingly.
It may take some time for the search engines to find your website. If you cannot wait for the search engines to find you then you can tell the search engines about your website and the search engines will send its spider program to crawl your site and index your pages based on their content.
Use of Meta tags in your web pages is one of the most easiest and effective method to tell search engines about your webpage and its content. Those who know HTML language will know about HTML Tags. If you are not familiar with thest tags then below are some tips on using meta tags in your web pages
How to use Meta tags?
The meta tags contain attributes such as ‘Name’, and ‘Description’. The Name attribute can take values such as ‘Description’ or ‘Keywords’. While the ‘Description’ attribute will have details about keywords and description.
Assume that you do Real estate business and you have created a webpage regarding this. The tips given below will explain how you can effectively use the Meta tags in your webpage.
<META NAME=Description Content=”Singapore Flat Sales, Flat at Singapore in reasonable price, the best flat seller in Singapore, Most reliable Flat seller in Singapore, CDMA approved flats in Singapore, Individual Luxury Duplex Bungalows in Singapore, Luxury Type Independent House in Singapore, Uniquely Designed House in Singapore, Independent House designed by experienced Architect”>
As you can see the description tag uses the most relevant keywords of your webpage and describes the content of the page for search engines to describe your webpage in search results and also for indexing.
<META NAME=Keywords Content=” Flats, Houses, Bungalows, Chennai”>
The keywords meta tag is to list the keywords in your webpage.
You can add your website for search engines to crawl your site. For this you need to submit your site details to search engines. Some of the most popular search engines are Google, Yahoo and MSN. You can use the links given below to submit your website.
Yahoo: http://submit.search.yahoo.com/free/request
Google: www.google.com/addurl.html
MSN: http://submit.bcentral.com/msnsubmit.htm
Other than search engines, you can also submit your site to directories such as DMOZ and Yahoo directory. You can visit www.dmoz.org to list your site under appropriate directory.
You can also generate money from your website. Now the easiest and hottest internet marketing method is by using google adsense.
Tutorial to Hide visited websites from others
Dec 13th
We search for lots of information on the internet. But it is not necessary that others know about this. Whenever you visit any website this information is captured and stored in your computer in the form of ‘cache’, ‘cookie’, ‘history’, and ‘windows registry’. There is a danger due to this. Whoever uses the same computer after you have used can find out which websites you have been visiting. If you have a personal computer that no one else will ever use, then you don’t have to worry much about this. But if your home or office computer is shared then you better clear this history. In this tutorial let us see how to completely remove the recently visited websites from your computer.
- Cache Folder
Every time you visit a website, every browser has the functionality to store the images, websites, urls etc in your hard disk somewhere in the temporary folders. This is useful to save bandwidth. When you visit the same website again, instead of downloading all the images again, the browser will retrieve them from the temporary folders from your hard disks and therefore increasing the speed and saving internet bandwidth. So when you finish browsing you can clear these temporary folders. This temporary folder is usually referred to as Cache. The exact location of this folder will differ based on the browser you are using. For instance if you use Internet explorer then this cache is located in the ‘Temporary Internet Files’ folder under your c:\Windows folder.
You can either delete from this folder or you can delete it from your browser. Goto Tools-> Internet Options. Under the General tab click ‘Delete Files’ button. - History
All the browsers also store the urls of every website you visit. This is used to show the address of the site on the ‘Address Bar’ when you start typing the first few letters of the websited address, the browser will take from the history and prompt you for the full address. This makes your job easier so that you need not type the full address every time. But if you want to hide the sites you visit then you have to remove this history also. Internet explorer stores this history in a folder called ‘History’ under c:\Windows folder.
Or you can delete history from your browser. Goto Tools-> Internet OPtions. Select the ‘General’ tab and click on ‘Clear History’ button. In the confirmation dialog box select ‘OK’. This will clear your history.
- Cookies
Whenever you visit websites, some information about you and some information about that website is stored in your computer’s hard disk. When you visit the same site again, the information stored in this cookie file will be read to identify you. This is especially useful for sites that can personlize the site for you and displays messages such as ‘welcome your_name’ etc. But this cookie also stores the name of the site you visit so you should also delete these cookies if you want to hide the sites you visited.
To delete cookies, goto Tools->Internet Options. And click on ‘Delete Cookies’ button. Or you can choose the security tab and click on ‘Custom Level’ button to disable or enable cookies.
- Registry
Another place in which the websites you visited are stored is the windows registry. It is not advisible to modify registries if you are not sure how to use them. Only those who are confident and willing to take risk should touch the registry. Click on ‘Start->Run’ and type ‘regedit’ and press enter. The windows registry will open. Now click on ‘Edit->find’ and type ‘URL History’. In the right hand side you can see a list of website addresses that you visited. You can select them one by one and delete them. programs, viruses and hackers.
A VoIP Tutorial
Dec 13th
VoIP – Voice Over Internet Protocol – is a very popular buzzword in the Internet world.
VoIP makes communication possible without telephone wires, telephone exchanges and even without telephones. You can make voice calls free of charge or at a minimal charge over internet.
If VoIP can give the same quality and standard of voice as in normal telephones then there will not be any need for telephone exchanges any more. People will change to free or cheaper VoIP alternative sooner or later.
The VoIP service is available in two types. Free service and cheap service. Skype is a free VoIP service. While services such as Phonewala, HCL, sathyam provide payable VoIP service. You can download Skype software from www.skype.com .
In payable VoIP service PSTN (Public Switched Telephone Network) plays a part. Therefore you can call any other phone number through this service. The called person may have subsribed to the VoIP service or maynot have subscribed to the VoIP service, you can still make calls to him. Generally the subscribers of the same VoIP service provider can talk with each other freely. The free VoIP service does not use PSTN. Therefore if you are using the Free VoIP service then you cannot call other telephone numbers and vice versa. But you can use the free VoIP service to talk with each other using computers conencted to the internet.
Ok, now you have decided to try and use VoIP. What are the requirements to use VoIP?
You computer should have sound card, Microphone and speakers. If you have a headphone then it is better. And then you should have internet connection. Broadband connection is better.
In 1999, Internet Society, introduced the Session Initiation Protocol (SIP). SIP protocol is used to find out whether the computer that you want to call is currently connected to the internet and is available for making a call. Even internet phones use this SIP protocol.
Earlier I mentioned that using VoIP you can make free calls between computer to computer. You can also make phone calls from your computer to another phone but at a cheaper rate than the normal phone charges.
If you compare VoIP calls to a normal phone to phone call, it is like comparing the quality of a mobile call and a land line call. Many agree that the quality of a land line to land line call is better than the mobile to mobile call. Similarly the quality of the VoIP calls as compared to phone to phone call is slightly below standard. In VoIP, your voice is converted to digital signals and packed into small data packets and then sent over internet. There is no guarantee that these data packets will be received in the same order in which it was sent. The data packets may get mixed. Therefore in order to get all the data packets and arrange them in order it may take some time and hence there may be delay. This is called ‘Jitter’.
If some data packets take too long to arrive then the routers may reject these packets. This will cause ‘Packet Loss’. Therefore the speech may be intermittent and sometimes irritable.
And some argue that VoIP is crackable and crackers may evesdrop to these data packets and listen to your conversations. But even normal telephones can be tapped. The VoIP technology is fast evolving and some VoIP providers use Public Key Encryption to encrypt the data packets and hence cannot be cracked.
To read more about VoIP and to download some free VoIP software visit m-indya.com.
Creating Autorun CDs a tutorial
Dec 13th
Have you noticed that the CDs that you buy or the CDs that comes with books runs automatically when you insert the CD into your CD drive. This is because of the ‘Autorun’ facility in the CDs.
But using this Auto Run feature you can only execute executable programs. Therefore the webpages and any other files cannot be opened automatically using Autorun.
Imagine that you want to copy the powerpoint presentation that you created or the Word document into a CD and pass it to your friend. Will it not be nice if the powerpoint presentation or the document opens automatically when the friend inserts the the CD into his computer?
Now every computer comes with a CD writer. You may wonder whether the CDs that you create using your CD writer can use the Autorun facility. Yes you can.
You have to create a file named ‘autorun.inf’. You can create this file using a normal notepad. You have to copy this file in the root folder of the CD. If you want to use any icon then you can also copy an icon file into the root folder.
How to execute an executable file in a CD automatically.
For example assume that you have a myprogram.exe file and myicon.ico file. And you want to run myprogram.exe file automatically when the CD is inserted
Keep both these files in the same folder.
Open a notepad and type these three lines in the notepad
(autorun)
open=myprogram.exe
icon=myicon.ico
save this file as ‘autorun.inf’.
If your executable file is not in the root folder then you have to specify the full path. (eg. open=myfoler/myprogram.exe)
To create autorun cds for non executable files
If your file is not an executable file like .xls, .doc, .htm, .html, .mp3, .wma, .wav, .mpg, .avi, .jpg, .bmp, .zip or any other file then how to write the autorun.inf file.
Let us assume that you have index.htm file as the autorun file. Then the autorun.inf file will be as follows:
(autorun)
open=start index.htm
icon=myicon.ico
In this case when you insert the CD, a small black window will open and close very fast and then you will see the index.htm file in Internet Explorer.
If you do not want the dos window to open then create the autorun.inf file as below:
(autorun)
shellexecute=index.htm
icon=myicon.ico
However the shellexecute will not work in Windows 98 or older versions. It will work in Windows XP and the newer versions of Windows. In earlier versions you can use the DOS batch file. So you will have one more file autorun.bat in addition to autorun.inf
(autorun)
open=autorun.bat index.htm
icon=myicon.ico
and the autorun.bat file will as follows:
echo off
“start % 1
“exit
How to use autorun.exe
In the above example we used two files autorun.bat and autorun.inf. However the use of autorun.bat is not a wise option. Because a batch files cannot handle errors.
Therefore you can use the free autorun.exe instead of autorun.bat
autorun.exe file is provided by Tarma software research freely. Anybody can use this software. You can download autorun.exe from www.tarma.com/products/index.htm . Download this file and copy it to the root folder of the copied CD.
The autorun.inf file should be as follows:
(autorun)
open=autorun.exe index.htm
icon=myicon.ico
Bluetooth Tutorial
Dec 13th
Bluetooth is a very common buzzword used in computer and electronics Industry. In this tutorial let us see what is bluetooth and what are the features of bluetooth.
What is Bluetooth?
Bluetooth is a technology which uses Radio Frequency to connect different computer equipments and telecommmunication devices and transfer voice and data between them. Bluetooth operates at 2.4 Ghz frequency. We connect devices that support bluetooth and talk or send data. Bluetooth plays an important role in wireless technologies. You may wonder how the name bluetooth came about. A king named ‘Herald Bluetooth Blaatand’ integrated Denmark and Norway countries together. Therefore, the technology that connects various devices was named after this king.
Is WiFi and Bluetooth Same?
No. Both are wireless technologies. Both are related to computers. However they both differ in many ways. Computer, Cellphone, PDAs, headsets etc can be connected using bluetooth. Bluetooth is used to connect devices that are near to each other. Bluetooth consumes very less power. Whereas WiFi is used to connect computers, notebooks and PDAs that are far from or near to each other.
What is the distance required between two bluetooth devices?
Bluetooth devices should be within less than 10 meters (32 feet) apart to connect to each other. There are also high power bluetooth devices that can operate upto 100 meter distance. But these high power bluetooth devices are expensive. For normal home users the normal 10 meter distance is more than enough.
What is the speed of bluetooth?
Two bluetooth devices transfer data upto 1MBPS speed between them. But in reality you maynot get this 1MBPS speed. Normally you will get speed upto 721 KBPS. Is the data transfer in bluetooth secure? Bluetooth uses Frequency hopping. Furthermore the data is encrypted. Hence the data is fully secure in bluetooth.
How many devices can be connected in bluetooth?
Consider Bluetooth 1.0 and Bluetooth 1.1 standards. Using Bluetooth 1.0 based devices you can connect only one device to another device. But using Bluetooth 1.1 based devices, one device can connect to eight other bluetooth devices simultaneously.
What are the different types of Bluetooth devices?
Mobile phones, Notebook computers, Printers, PDAs are some of the bluetooth enabled devices. Many manufacturers including Nokia, IBM, Ericsson, Toshiba, 3 Com, Intel, Motorola produce bluetooth devices.
Bluetooth Frequency Interference.
Bluetooth operates in 2.4 Ghz frequency. Microwave oven, Cordless telephone are other devices that use the same 2.4 Ghz frequency. Moreover 802.11b, 802.11g Wi-Fi standards also use the same 2.4 Ghz frequency. By right there will not be any interference from these other devices though they are using the same frequency. This is because bluetooth uses frequency hopping and Direct Sequence Spreading methods. However it is advisable to keep these devices atleast 10 meters apart from bluetooth devices.
How to use Bluetooth?
Most of the latest mobile phones are bluetooth enabled. Normally to turn it on you need to turn on bluetooth using your phone’s manual since it may differ in various models of phones.
You can get bluetooth cards and connect to your computer. Or buy a USB or PCMCIA bluetooth card and connect it to your notebook. Now just give a name to each of your bluetooth device and then using your bluetooth utility scan for nearest bluetooth devices to connect to. Once you find the bluetooth device to connect to just select it and connect and then you can start to transfer data files between them.
You can read more tutorials on bluetooth here and tutorials on wifi here.
Tutorial on ASCII and ANSI standards
Dec 13th
ASCII and ANSI codes are two types of codes used in the computer. American Standard Code for Information Interchange is the expansion for ASCII. American National Standards Institute is the expansion for ANSI.
ANSI and ASCII definitions are very important. We use keyboard to type ‘A’ to ‘Z’ , ‘a’ to ‘z’ , numbers from ‘0’ to ‘9’ and special symbols. These symbols though helpful to us, computer understand only numerical. Each key has a value. Computer takes in account the value of the key you press and produces it in monitor
ASCII CODE: ASCII codes are seven digits numbers. If we multiply 2 for 7 times it gives 128,is’nt it? So the number of ASCII numbers is 128,So each number takes values between 0 to 127.For e.g. The alphabet A takes the value 65,the alphabet a takes the value 97.8 bits are used to represent a single ASCII number.
ANSI CODE: The total number ANSI numbers that uses 16 bits is 65,536. (If 2 is multiplied for 16 times we get 65536. ANSI is called as the superset of ASCII, so lot special symbols can be typed using it.
To type ANSI and ASCII numbers: To display letter in the monitor we need to type the ASCII or ANSI value of the number. 3 digits denote ASCII and, 4 digits denote ANSI. We already see that the ANSI value of A is 65 when we specifies this in ANSI we have to specify as 065 in three digits. As same as in ASCII we have to specify as 0065 in four digits. For typing the ANSI and ASCII codes we should use the Numeric Keypad, which is in left side of our keyboard. We should not use the number keys, which is in second row of our keyboard. For typing ANSI and ASCII code open the word document in Microsoft. Press the Num lock key the light should glow.
*Press Alt key and type the keys 065(in Numeric Keypad). Letter A will display. Press Alt key and type other values (example 078,094,). From typing the three digit numbers we get the ASCII letters.
*Press Alt key and type the keys 0128. Displays the Euro money symbol, as same as type other four digit numbers (example 0065,0163,). We get ANSI letters.
LAN Tutorial – Step by step guide to create your Home network
Dec 13th
These days it is becoming very common that in a household there are more than one computer. Instead of using them individually you can connect them together and create a Local Area Network (LAN). There are many advantages of LAN network. Here is a tutorial on LAN and steps to create a network.
To create a LAN you may need to spend some money and spend a few hours working on it. But if you do it once then you can enjoy the benefits of LAN for the rest of your life.
Benefits and advantages of LAN
- You can share files and information between computers. You can share the documents, audio, video and image files with other computer users in the network and similarly access their files from their computers.
- You can share hardware devices such as laser printer, DVD writer between computers. So you do not have to buy these hardware for every computer. If one of the computer has, then the other computers can use this.
- You can share the single internet connection. You can just pay for one internet connection while all your computers can share the same internet connection through the LAN.
Types of Networks
- There are four types of network namely Wired network, wireless network, hybrid network and powerline network. Let us discuss each of them very briefly
- Wired – As the name suggests, the computers in wired network are connected using wires. For this, coaxial cables and UTP cables are used. 10/100 ethernet cards can be used. Network card or network adapter (NIC: Network Interface Card) has to be installed on all computers in the network. 10/100 implies 10MBPS or 100 MBPS speed. Gigabit cards are also available in the market.
The advantage of Wired network is it is fast, cheap and easy to create. You need a hub, switch or router. The disadvantage of wired network is that the wires have to be laid from these switches to each individual computer in the network.
- Wireless network does not need any cables. It is easy to install. However it is quite expensive. There are limitations in the distance and there are security problems in wi-fi.
- Considering the pros and cons of wired and wireless networks, connecting some computers through wires and some computers wirelessly is called hybrid network.
- It is possible to send data through electrical wires. Powerline network was invented based on the concept that there is no need for a separate cable to carry data. It is not so popular in many countries.
Steps to create a LAN (Wired network)
- First install the network card’s driver software in all the computers. You can refer to the manual of the network card.
- Shutdown the computer and unplug the power connection
- Open the computer’s cabinet
- Touch an object such as metal pipe and release the static current from your body.
- Look for a free PCI slot in your motherboard. Remover the slot cover from the cabinet near the free PCI slot and insert the network card into the PCI slot firm and tight and secure it with screws.
- Close the cabinet, insert the power cable and start your computer. Windows will detect the network card. Now it will prompt for the driver. Use the network card’s CD and install the driver.
- Now connect the network Switch to the power cable and switch on.
- Use the UTP (Network cable) to connect your computer’s network card and the switch.
- Similarly connect the second computer to the switch.
- Now in Windows, star the Network setup wizard. In Windows XP, click Start->my network places and then select ‘Setup a home or small office network‘ link. This will open the wizard. Just follow the instructions in the wizard and complete the steps in the wizard
Congratulations. Your home network is ready to use.
What is a startup menu – A Tutorial
Dec 13th
Among the Windows operating system menus, ‘Startup menu‘ is one of the most important menu but least used menu. Generally this menu is not visible outside. Only if there is any problem this menu becomes visible.
This startup menu has the following startup items, Normal, Safe Mode, step by step, command prompt only etc. If you choose your preferred option the windows will boot accordingly.
The ’safe mode’ option in the startup menu is very important. If the computer hangs due to any hardware problems then you can use the ’safe mode’ to login and fix the problem. The usual drivers and programs will not run when computer is started in safe mode. In safe mode you can remove adware, spyware and malware.
If you want to give commands using DOS prompt then select the ‘Command Prompt only’ option.
If you want that the commands from config.sys and autoexec.bat to execute one by one then you can select the ‘Step by Step’ option in the startup menu. With this you can exactly pin point which command is causing the problem.
In the startup menu if you do not select any options within 30 seconds then windows will use the default option. The default option is the ‘Normal’ mode.
Now let us see how to bring the startup menu during booting. There are two ways. The first option is by pressing a key while the computer is booting and the second option is by bringing the startup menu automatically without pressing any button.
To bring the startup menu by pressing a key
Turn on your computer. The booting process will now begin. After the basic testing windows will show some system information. Now press the F8 key.
In the black window when you see a small line or square at teh top left corner of the screen you should press F8 key or Conrtol key based on the operating system you are using. If you are not sure try both.
To show startup menu every time the computer boots
In the above method, the startup menu will only appear if you pressed the right key at the right moment. If you missed then the windows will start booting in normal mode without showing the startup screen. But you can make startup window show everytime the windows boots.
The steps given below may differ a bit based on your operating system.
If you are using Windows 98/ME or XP the follow the steps below to show startup screen at every time the computer boots.
- Give ‘Start->Run’ command
- In the Run window type ‘Msconfig’ and press ‘enter’ key.
- The system configuration editor window will open. Windows 98/ME users click on ‘General’ tab and click ‘Advanced’ button and then select ‘Enable startup menu’. Windows XP users click on ‘boot.ini’ tab and select the SAFEBOOT check box.
- Click on ‘OK’ button
From now on whenever you start your computer it will show the startup menu.
In Windows 2000 there is no MSCONFIG utility. Therefore Windows 2000 users must use the control F8 key to enter startup menu.
If you are a Windows 2000 user and you want to download the MSCONFIG utility then you can download the MSCONFIG utility from http://www.drd.dyndns.org/softlib/utils/msconfig2k.zip
How to create effective multimedia presentation using power point?
Dec 2nd
To present one’s ideas across clearly, most of us us Microsoft Office Power Point. MS Powerpoint is a great application to create and do stylish and informative presentations. These days, people are using power point to include video clips and audio clips to create a multimedia presentation. Here are some tips on how to use video clips and create a power point presentation.
- The size of the video
After inserting video files into presentations the size of the presentation file (.ppt) becomes too big. Therefore to run this presentation a powerful computer with more system memory is required. Due to this reason, some do not show the video clip on ‘full screen’. Instead they use a smaller screen for the video. For example in a 640 x 480 resolution monitor a 320 x 240 size video clip will be smaller when viewed. Therefore it is best to keep the size of the video as 640 x 480. A video with this size (640×480) will appear clear on all monitors with different resolutions such as 640×480, 800 x 600, 1024×768, 1280×1024. - Compression
Most of the people choose the MPEG 2 video compression format. However, Microsoft’s Widows Media Video (WMV) and Real Network’s Real Video compression methods are also pretty good.Between Widows media video and Real video which is better? Which takes the least CPU time and processing power? Even an average computer can run Windows media video files and hence most of them choose windows media video. Moreover this WMV format is most suitable for Powerpoint. Hence I suggest to use the MWV format for compression for use in power piont.
- Book marking a scene or a frame in a video
If you are going to insert a very big video into the power point presentation it is better to use the software Windows Media Encoder File Editor. When you download the windows media encoder, this file editor is also downloaded together with this software. Using this software you can bookmark important scenes in the video. The presenter can jump to any book marked scene in the video while doing the presentation. - How to Insert a video inside the presentation
There are three ways how you can insert video into a powerpoint presentation. Let us see which method is the best.1. Insert Movies and Sounds is the mostly used method. A window will be shown within the slide where you can insert the video and play it by clicking on the window.
2. Insert Object is another method where you can insert the Windows media player as the object. Once you have inserted the media player object right click on this object and choose ‘properties’. In the properties window you can show the media controls and in the ‘Custom’ button you can browse and select the video file stored in your hard disk. This insert object method is the best to show media controls such as Volume control, slider bar, zoom in, zoom out, full screen etc.
3. Action Button. The above two methods are not suitable to show real video and quick time videos inside the power point presentation. But if you have only real video or quick time format video then you can use the ‘Action Button’ option from the ‘Slide Show’ menu. Using the action button option you can run any windows applications from within the presentation. So using this option you can choose real video or the quicktime player. If you click the action button the player will be started and the video will run.
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